36 results on '"Lin, Hongyan"'
Search Results
2. Modified Podophyllotoxin Phenoxyacetamide Phenylacetate Derivatives: Tubulin/AKT1 Dual-Targeting and Potential Anticancer Agents for Human NSCLC.
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Lin, Hongyan, Ai, Dongxuan, Liu, Qingqing, Wang, Xinling, Gao, Jiale, Chen, Qingqing, Ruan, Lingyu, Tao, Yuheng, Gao, Jian, and Wang, Liqun
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- 2023
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3. Research on the Intelligent manufacturing Path of Equipment Manufacturing Enterprises Based on Factor Load Matrix Model.
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Yin, Jin, Zhang, Boyu, Geng, Xin, Yin, Zimin, and Lin, Hongyan
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PRINCIPAL components analysis ,MANUFACTURING industry equipment ,MEMBERSHIP functions (Fuzzy logic) ,INDUSTRIALISM ,BUSINESS enterprises - Abstract
To explore measures for promoting the competitive power of the Liaoning equipment manufacturing industry and identifying development opportunities for realizing intelligent manufacturing, this study focuses on Liaoning equipment manufacturing enterprises. Ten investigation variables are designed across six dimensions, including the foundations of intelligent manufacturing, vertical information flow integration, enterprise-manufacturer relationships, partner value stream, industrial standardization system, and government-scientific research institution collaboration. A comprehensive survey and data collection using questionnaires are conducted. The survey data is analyzed using logical analysis to construct a membership function model, and the confidence and reliability of the data are tested using the KMO and Bartlett coefficient models. Principal component analysis is then used to construct a factor load matrix model to identify key influencing factors for realizing intelligent manufacturing. Based on the findings, countermeasures and suggestions are proposed to promote the development of Liaoning equipment manufacturing enterprises towards information, digital, and intelligent dimensions. [ABSTRACT FROM AUTHOR]
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- 2023
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4. Ultraversatile Fluorescent Sensors Based on Two CoII/NiIICoordination Polymers for Identifying Various Antibiotics via the Turn-On/Off Effect and Detecting pH
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Geng, Jun, Chen, Yaxuan, Xie, Shuyu, Lin, Hongyan, and Wang, Xiuli
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Because the accurate and rapid detection of antibiotics and pH plays an important role in biological systems and environmental fields, developing suitable and efficient sensors that can simultaneously detect antibiotics and pH has become important. In this work, we successfully designed and synthesized two new one-dimensional coordination polymers based on the mixed ligands L [N,N′-bis(4-methylpyridin-4-yl)-2,6-naphthalene dicarboxylamide] and H2CPG [3-(4-chlorophenyl)glutaric acid], [M(L)(HCPG)2(H2O)2] (M = Co for CP 1, and M = Ni for CP 2), which were structurally characterized by single-crystal X-ray diffraction, infrared spectroscopy, powder X-ray diffraction, and thermogravimetric analysis. CP 1and CP 2can be used as ultraversatile fluorescent sensors, which can sense erythromycin (ERY) and oxacillin (OXC) by turn-on fluorescent enhancement and detect furaltadone (FTD) via the turn-off fluorescent quenching effect, separately. The concentration ranges of different analytes sensed by CPs 1and 2were 0–0.046 and 0–0.069 mM for ERY, 0–0.04 and 0–0.028 mM for OXC, and 0–0.155 and 0–0.019 mM for FTD, respectively. Moreover, CP 2can effectively sense pH, in both a wide pH range and the fine physiological range. The sensors have a rapid luminescence response, good recyclability, and excellent fluorescence stability. More importantly, they not only represent the first example of detecting ERY or OXC based on fluorescent CPs but also are the very rare ultraversatile fluorescent sensors. The fluorescent sensing mechanism for antibiotics and pH was discussed in detail.
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- 2023
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5. Safety and immunogenicity of a live-attenuated influenza virus vector-based intranasal SARS-CoV-2 vaccine in adults: randomised, double-blind, placebo-controlled, phase 1 and 2 trials.
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Zhu, Fengcai, Zhuang, Chunlan, Chu, Kai, Zhang, Liang, Zhao, Hui, Huang, Shoujie, Su, Yingying, Lin, Hongyan, Yang, Changlin, Jiang, Hanmin, Zang, Xia, Liu, Donglin, Pan, Hongxing, Hu, Yuemei, Liu, Xiaohui, Chen, Qi, Song, Qiaoqiao, Quan, Jiali, Huang, Zehong, and Zhong, Guohua
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COVID-19 vaccines ,RESEARCH & development ,INFLUENZA viruses ,INFLUENZA A virus ,MEDICAL sciences ,IMMUNE response - Abstract
All currently available SARS-CoV-2 vaccines are administered by intramuscular injection. We aimed to evaluate the safety and immunogenicity of a live-attenuated influenza virus vector-based SARS-CoV-2 vaccine (dNS1-RBD) administered by intranasal spray in healthy adults. We did double-blind, randomised, placebo-controlled phase 1 and 2 trials, followed by a phase 2 extension trial, at a single centre in Jiangsu, China. Healthy adults (≥18 years) who had negative serum or fingertip blood total antibody tests for SARS-CoV-2 (in phases 1 and 2), with no prevalent SARS-CoV-2 infection or history of infection and no SARS-CoV-2 vaccination history (in all three trials reported here), were enrolled. Participants were randomly allocated (4:1 in phase 1, 2:1 in phase 2, and 1:1 in the extension trial) to receive two intranasal doses of the dNS1-RBD vaccine or placebo on days 0 and 14 or, for half of the participants in phase 2, on days 0 and 21. To avoid cross-contamination during administration, vaccine and placebo recipients were vaccinated in separate rooms in the extension trial. The phase 1 primary outcome was safety (adverse events recorded on days 0–44; serious adverse events recorded from day 0 until 12 months after the second dose). In the phase 2 and extension trials, the primary immunogenicity outcomes were SARS-CoV-2-specific T-cell response in peripheral blood (measured by IFN-γ ELISpot), proportion of participants with positive conversion for SARS-CoV-2 receptor-binding domain (RBD)-specific IgG and secretory IgA (s-IgA) antibodies, and concentration of SARS-CoV-2 RBD IgG in serum and SARS-CoV-2 RBD s-IgA in the nasopharynx (measured by ELISA) at 1 month after the second dose in the per-protocol set for immunogenicity. χ
2 test and Fisher's exact test were used to analyse categorical data, and t test and Wilcoxon rank sum test to compare the measurement data between groups. These trials were registered with the Chinese Clinical Trial Registry (ChiCTR2000037782, ChiCTR2000039715, and ChiCTR2100048316). Between Sept 1, 2020, and July 4, 2021, 63, 724, and 297 participants without a history of SARS-CoV-2 vaccination were enrolled in the phase 1, phase 2, and extension trials, respectively. At least one adverse reaction after vaccination was reported in 133 (19%) of 684 participants in the vaccine groups. Most adverse reactions were mild. No vaccine-related serious adverse event was noted. Specific T-cell immune responses were observed in 211 (46% [95% CI 42–51]) of 455 vaccine recipients in the phase 2 trial, and in 48 (40% [31–49]) of 120 vaccine recipients compared with one (1% [0–5]) of 111 placebo recipients (p<0·0001) in the extension trial. Seroconversion for RBD-specific IgG was observed in 48 (10% [95% CI 8–13]) of 466 vaccine recipients in the phase 2 trial (geometric mean titre [GMT] 3·8 [95% CI 3·4–4·3] in responders), and in 31 (22% [15–29]) of 143 vaccine recipients (GMT 4·4 [3·3–5·8]) and zero (0% [0–2]) of 147 placebo recipients (p<0·0001) in the extension trial. 57 (12% [95% CI 9–16]) of 466 vaccine recipients had positive conversion for RBD-specific s-IgA (GMT 3·8 [95% CI 3·5–4·1] in responders) in the phase 2 trial, as did 18 (13% [8–19]) of 143 vaccine recipients (GMT 5·2 [4·0–6·8]) and zero (0% [0–2]) of 147 placebo recipients (p<0·0001) in the extension trial. dNS1-RBD was well tolerated in adults. Weak T-cell immunity in peripheral blood, as well as weak humoral and mucosal immune responses against SARS-CoV-2, were detected in vaccine recipients. Further studies are warranted to verify the safety and efficacy of intranasal vaccines as a potential supplement to current intramuscular SARS-CoV-2 vaccine pools. Steps should be taken in future studies to reduce the potential for cross-contamination caused by the vaccine strain aerosol during administration. National Key Research and Development Program of China, National Science, Fujian Provincial Science, CAMS Innovation Fund for Medical Sciences, and Beijing Wantai Biological Pharmacy Enterprise. [ABSTRACT FROM AUTHOR]- Published
- 2022
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6. Association of dietary inflammatory index and leukocyte telomere length with mild cognitive impairment in Chinese older adults
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Liu, Qian, Zhou, Dongtao, Duan, Huilian, Zhu, Yun, Du, Yue, Sun, Changqing, Lin, Hongyan, Jin, Mengdi, Fu, Jingzhu, Gao, Yuxia, Ma, Fei, Chen, Yongjie, Zhang, Meilin, and Huang, Guowei
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ABSTRACTBackgroundThere are minimal data on the relationship between DII and MCI in an elderly Chinese population and no research has assessed the potential effect of LTL.ObjectiveWe investigated the association between DII and MCI while taking into account the potential effect of LTL.MethodsThis cross-sectional study included 3,386 participants aged ≥ 60 years of age from the Tianjin Elderly Nutrition and Cognition Cohort study. DII score was constructed based on a validated self-administered food frequency questionnaire was calculated based on the method developed by Shivappa et al. LTL was measured by quantitative real-time polymerase chain reaction. Multivariable logistic regression analysis was used to analyze the association between DII, LTL and MCI. Moreover, mediation analysis was employed to test the mediation effect of LTL on the total effect of DII on MCI.ResultsCompared with the participants in the lowest tertiles of LTL and DII score, the odds ratios (ORs) of MCI in the highest tertiles were 0.386(95% CI: 0.281-0.529) and 1.650 (95% CI: 1.232-2.209), respectively. The significant association between DII score and MCI persisted after further adjusting for LTL (OR: 1.595; 95% CI: 1.189-2.140). The link between DII score and MCI was mediated partially by LTL (βindirect effect= -0.008, P<0.05).ConclusionHigh DII score was positively associated with MCI prevalence in an elderly Chinese population and the link between DII scores and MCI seemed to be mediated partially by LTL.
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- 2023
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7. Polyoxometalate-based metal–organic complexes constructed from a new bis-pyrimidine-amide ligand with high capacitance performance and selectivity for the detection of Cr(VI)
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Liu, Qianqian, Lu, Junjun, Lin, Hongyan, Wang, Xiuli, Chang, Zhihan, Chen, Yongzhen, and Zhang, Yuchen
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In this paper, three new polyoxometalates (POM)-based metal–organic complexes constructed from a new semi-rigid organic ligand N,N'-bis(4-pyrimidinecarboxamido)-1,2-cyclohexane (4-bpmah) H2[Cu(4-bpmah)2(SiMo12O40)(H2O)2]·2H2O (1), H[Cu(4-bpmah)2(PMo12O40)(H2O)2]·2H2O (2) and [Cu(4-bpmah)(H2O)2]·[Cu2(TeMo6O24)(H2O)10]·4H2O (3) were synthesized by hydrothermal method. Single crystal X-ray analyses showed that complexes 1and 2were isostructural, in which the isolated Keggin-type [SiMo12O40]4–/[PMo12O40]3–anions and [Cu(4-bpmah)2(H2O)2]2n+units were expanded into 3D supramolecular structures through hydrogen bond interactions. In complex 3, the 1D [Cu(4-bpmah)(H2O)2]2n+metal–organic chains and isolated [Cu2(TeMo6O24)(H2O)10]2n–units were expanded into a 3D supramolecular framework by the hydrogen bond interactions. In this paper, carbon cloth working electrodes composited by the title complexes (1/CC, 2/CC and 3/CC) were prepared and used as electrodes for supercapacitors. The performance of supercapacitors as well as the influence of electrolyte solution and title complexes quality load on the performance of supercapacitors were studied. Furthermore, the electrochemistry and electrocatalytic behaviors of complexes 1–3bulk-modified carbon paste electrodes (1-CPE, 2-CPE and 3-CPE) toward the reduction of KBrO3, KNO2, Cr(VI), as well as their sensing behaviors on Cr(VI) were investigated.
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- 2022
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8. Safety and immunogenicity of a live-attenuated influenza virus vector-based intranasal SARS-CoV-2 vaccine in adults: randomised, double-blind, placebo-controlled, phase 1 and 2 trials
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Zhu, Fengcai, Zhuang, Chunlan, Chu, Kai, Zhang, Liang, Zhao, Hui, Huang, Shoujie, Su, Yingying, Lin, Hongyan, Yang, Changlin, Jiang, Hanmin, Zang, Xia, Liu, Donglin, Pan, Hongxing, Hu, Yuemei, Liu, Xiaohui, Chen, Qi, Song, Qiaoqiao, Quan, Jiali, Huang, Zehong, Zhong, Guohua, Chen, Junyu, Han, Jinle, Sun, Hong, Cui, Lunbiao, Li, Jingxin, Chen, Yixin, Zhang, Tianying, Ye, Xiangzhong, Li, Changgui, Wu, Ting, Zhang, Jun, and Xia, Ning-Shao
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All currently available SARS-CoV-2 vaccines are administered by intramuscular injection. We aimed to evaluate the safety and immunogenicity of a live-attenuated influenza virus vector-based SARS-CoV-2 vaccine (dNS1-RBD) administered by intranasal spray in healthy adults.
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- 2022
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9. Two Novel Polyoxometalate-Based Metal–Organic Complexes with Chiral Waugh-Type [MnMo9O32]6– Anions as High-Efficiency Catalytic Oxidative Desulfurization Catalysts.
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Liu, Qianqian, Lin, Hongyan, Wang, Xiu-Li, Wang, Xiang, Xu, Na, Tian, Yuan, Yang, Lin, Li, Xiran, and Sun, Jiaying
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- 2021
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10. Association between methionine cycle metabolite-related diets and mild cognitive impairment in older Chinese adults: a population-based observational study
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Fu, Jingzhu, Liu, Qian, Zhang, Meilin, Sun, Changqing, Du, Yue, Zhu, Yun, Lin, Hongyan, Jin, Mengdi, Ma, Fei, Li, Wen, Liu, Huan, Yan, Jing, Chen, Yongjie, Wang, Guangshun, and Huang, Guowei
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ABSTRACTBackgroundHomocysteine (Hcy) and folate, involved in a common metabolic pathway supplying essential methyl groups for DNA and protein synthesis, have been found to be associated with cognitive function. Moreover, diet may influence methionine cycle metabolites (MCM) as well as mild cognitive impairment (MCI), but MCM-related dietary patterns are unclear in an older population.ObjectiveThe study aimed to identify MCM-related dietary patterns of older Chinese adults, and examine their association with the prevalence of MCI in a large population-based study.MethodsThis study included 4457 participants ≥ 60 years of age from the Tianjin Elderly Nutrition and Cognition Cohort study. Dietary data were collected using a valid self-administered food frequency questionnaire, and factor analysis was used to identify major dietary patterns in the population. MCM-based dietary patterns were derived using reduced rank regression (RRR) based on serum folate and Hcy as response variables.ResultsCompared with the participants in the lowest quartile of vegetarian pattern and processed foods pattern, the odds ratios (ORs) of MCI in the highest quartile were 0.72 (95% CI 0.53–0.98) and 1.39 (95% CI 1.03–1.88), respectively. In the MCM-based dietary patterns derived using RRR, the ORs for MCI for the highest quartile of MCM patterns I and II were 0.58 (95% CI 0.44–0.78) and 1.38 (95% CI 1.04–1.83), respectively, compared with participants in the lower quartile.ConclusionsFindings from this large population-based study suggested that adopting an MCM-related dietary pattern, especially avoiding processed foods, can decrease the occurrence of MCI.
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- 2022
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11. Harnessing the power of microbes: Enhancing soybean growth in an acidic soil through AMF inoculation rather than P-fertilization
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Wen, Zhongling, Yang, Minkai, Fazal, Aliya, Han, Hongwei, Lin, Hongyan, Yin, Tongming, Zhu, Yuelin, Yang, Shouping, Niu, Kechang, Sun, Shucun, Qi, Jinliang, Lu, Guihua, and Yang, Yonghua
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The low phosphorus (P) availability of acidic soils severely limits leguminous plant growth and productivity. Improving the soil P nutritional status can be achieved by increasing the P-content through P-fertilization or stimulating the mineralization of organic P via arbuscular mycorrhizal fungi (AMF) application; however, their corresponding impacts on plant and soil microbiome still remain to be explored. Here, we examined the effects of AMF-inoculation and P-fertilization on the growth of soybean with different P-efficiencies, as well as the composition of rhizo-microbiome in an acidic soil. The growth of recipient soybean NY-1001, which has a lower P-efficiency, was not significantly enhanced by AMF-inoculation or P-fertilization. However, the plant biomass of higher P-efficiency transgenic soybean PT6 was significantly increased by 46.74%–65.22% through AMF-inoculation. Although there was no discernible difference in plant biomass between PT6 and NY-1001 in the absence of AMF-inoculation and P-fertilization, PT6 had approximately 1.9–2.5 times the plant biomass of NY-1001 after AMF-inoculation. Therefore, the growth advantage of higher P-efficiency soybean was achieved through the assistance of AMF rather than P-fertilization in available P-deficient acidic soil. Most nitrogen (N)-fixing bacteria and some functional genes related to N-fixation were abundant in endospheric layer, as were the P-solubilizing Pseudomonas plecoglossicida, and annotated P-metabolism genes. These N-fixing and P-solubilizing bacteria were positive correlated with each other. Lastly, the two most abundant phytopathogenic fungi species accumulated in endospheric layer, they exhibited positive correlations with N-fixing bacteria, but displayed negative interactions with the majority of the other dominant non-pathogenic genera with potential antagonistic activity.
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- 2024
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12. A modified natural small molecule inhibits triple-negative breast cancer growth by interacting with Tubb3.
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Han, Hongwei, Yang, Minkai, Wen, Zhongling, Wang, Xuan, Lai, Xiaohui, Zhang, Yahan, Fang, Rongjun, Yin, Tongming, Yang, Xiaorong, Wang, Xiaoming, Zhao, Quan, Qi, Jinliang, Chen, Hongyuan, Lin, Hongyan, and Yang, Yonghua
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Triple-negative breast cancer (TNBC) is a malignant tumor without specific therapeutic targets and a poor prognosis. Chemotherapy is currently the first-line therapeutic option for TNBC. However, due to the heterogeneity of TNBC, not all of TNBC patients are responsive to chemotherapeutic agents. Therefore, the demand for new targeted agents is critical. β -tubulin isotype III (Tubb3) is a prognostic factor associated with cancer progression, including breast cancer, and targeting Tubb3 may lead to improve TNBC disease control. Shikonin, the active compound in the roots of Lithospermun erythrorhizon suppresses the growth of various types of tumors, and its efficacy can be improved by altering its chemical structure. In this work, the anti-TNBC effect of a shikonin derivative (PMMB276) was investigated, and its mechanism was also investigated. This study combines flow cytometry, immunofluorescence staining, immunoblotting, immunoprecipitation, siRNA silencing, and the iTRAQ proteomics assay to analyze the inhibition potential of PMMB276 on TNBC. In vivo study was performed, Balb/c female murine models with or without the small molecule treatments. Herein, we screened 300 in-house synthesized analogs of shikonin against TNBC and identified a novel small molecule, PMMB276; it suppressed cell proliferation, induced apoptosis, and arrested the cell cycle at the G2/M phase, suggesting that it could have a tumor suppressive role in TNBC. Tubb3 was identified as the target of PMMB276 using proteomic and biological activity analyses. Meanwhile, PMMB276 regulated microtubule dynamics in vitro by inducing microtubule depolymerization and it could act as a tubulin stabilizer by a different process than that of paclitaxel. Moreover, suppressing or inhibiting Tubb3 with PMMB276 reduced the growth of breast cancer in an experimental mouse model, indicating that Tubb3 plays a significant role in TNBC progression. The findings support the therapeutic potential of PMMB276, a Tubb3 inhibitor, as a treatment for TNBC. Our findings might serve as a foundation for the utilization of shikonin and its derivatives in the development of anti-TNBC. A small novel molecule, i.e., α-lipoic acyl shikonin, modified form of a natural product (shikonin), acts as a novel inhibitor of Tubb3. [Display omitted] [ABSTRACT FROM AUTHOR]
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- 2024
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13. Two Novel Polyoxometalate-Based Metal–Organic Complexes with Chiral Waugh-Type [MnMo9O32]6–Anions as High-Efficiency Catalytic Oxidative Desulfurization Catalysts
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Liu, Qianqian, Lin, Hongyan, Wang, Xiu-Li, Wang, Xiang, Xu, Na, Tian, Yuan, Yang, Lin, Li, Xiran, and Sun, Jiaying
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Two novel polyoxometalates (POMs)-based metal–organic complexes (MOCs) [Co3(4-H2dpye)(MnMo9O32)(H2O)10]·H2O (1) and [Co3(4-H2dpyb)(MnMo9O32)(H2O)12]·4H2O (2) have been designed and synthesized under hydrothermal conditions by introducing the chiral Waugh-type [MnMo9O32]6–into the transition metal cobalt–bis(pyrimidine)–bis(amide) systems. Single crystal X-ray diffraction shows that 1and 2are racemic complexes containing both left-handed and right-handed [MnMo9O32]6–polyoxometalate anions. In complex 1, the chiral [MnMo9O32]6–anions are coordinated to the [Co3(4-H2dpye)(H2O)10]n6n+metal–organic units to build a 2D layered structure containing the left- and right-handed [MnMo9O32]6–-based chains. While complex 2consists of a 1D metal–organic chain [Co3(4-H2dpyb)(H2O)12]n6n+and the isolated [MnMo9O32]6–anions. Complexes 1and 2can be expanded into the racemic 3D supramolecular frameworks through extensive hydrogen bonding interactions. Complexes 1and 2can be used as high-efficiency heterogeneous catalysts for the oxidation of methyl phenyl sulfide (MBT). The effects of reaction solvent, temperature, amount of catalysts, and oxidant on the catalytic performance of MBT oxidation reaction were investigated. In addition, complexes 1and 2can be used as versatile and efficient catalysts for thioether oxidation. Importantly, Waugh-type [MnMo9O32]6–-based MOCs as oxidative desulfurization catalysts have rarely been reported.
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- 2021
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14. The structure of 4-hydroxylphenylpyruvate dioxygenase complexed with 4-hydroxylphenylpyruvic acid reveals an unexpected inhibition mechanism
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Wang, Xiaoning, Lin, Hongyan, Liu, Junjun, Zhao, Xinyun, Chen, Xi, Yang, Wenchao, Yang, Guangfu, and Zhan, Chang-guo
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The substrate resists the electrophilic attack of the bound dioxygen by the trim of its phenyl ring.
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- 2021
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15. A Series of Polyoxometalate-Based Metal–Bis(pyridyl-tetrazole) Complexes with High Electrocatalytic Activity for Hydrogen Evolution Reaction in Alkaline and Acid Media.
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Wang, Xiu-Li, Tian, Yuan, Chang, Zhi-Han, and Lin, Hongyan
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- 2020
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16. Association of Dietary Habits with Mild Cognitive Impairment among Elderly in Rural Area of North China
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Duan, Huilian, Sun, Changqing, Zhu, Yun, Liu, Qian, Du, Yue, Lin, Hongyan, Jin, Mengdi, Fu, Jingzhu, Ma, Fei, Li, Wen, Liu, Huan, Yan, Jing, Chen, Yongjie, Wang, Guangshun, and Huang, Guowei
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Background: Recent findings suggest a possible role of diet, particularly nutrient intakes and dietary patterns, in the prevalence of mild cognitive impairment (MCI); few studies, however, have been explicitly devoted to the relationship between dietary habits and MCI. Objectives: We aimed to explore the association between dietary habits, including meal timing, and MCI among older Chinese adults. Methods: This cross-sectional study involved data collected at the baseline of the Tianjin Elderly Nutrition and Cognition Cohort (TENCC) study, in which 3,111 community-dwelling older adults (326 MCI patients and 2,785 non-MCIs) from a rural area of Tianjin, China, were recruited. In March 2018 to June 2019, all participants underwent a detailed neuropsychological evaluation that allowed for psychometric MCI classification. Information on self-reported dietary behaviors was gathered via face-to-face interviews. Crude and multivariable-adjusted odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using logistic regression models. Results: In the multivariable-adjusted models, eating breakfast 4 to 6 times per week (vs. ≤3 times per week, OR: 0.45; 95% CI: 0.26, 0.75), drinking water before breakfast (yes vs. no, OR: 0.64; 95% CI: 0.51, 0.82), consuming water ≥1.5L per day (vs. <1.5L per day, OR: 0.64; 95% CI: 0.51, 0.82), and having lunch after 12:00 (vs. before 12:00, OR: 0.59; 95% CI: 0.47, 0.75) were associated with decreased risk of MCI. Participants who consumed higher amounts of cooking oil were at a higher risk of MCI (moderate vs. low, OR: 1.42; 95% CI: 1.04, 1.92; high vs. low, OR: 1.40; 95% CI: 1.07-1.83). Conclusion : This study suggests that dietary habits, including breakfast frequency, daily water consumption, cooking oil consumption, and meal timing, may be associated with the risk of MCI. If replicated, these findings would open new possibilities of dietary interventions for MCI.
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- 2021
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17. SNP rs17079281 decreases lung cancer risk through creating an YY1-binding site to suppress DCBLD1 expression
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Wang, Yu, Ma, Rongna, Liu, Ben, Kong, Jinyu, Lin, Hongyan, Yu, Xiao, Wang, Ruoyang, Li, Lei, Gao, Ming, Zhou, Baosen, Mohan, Man, Yu, Herbert, Hou, Zhaoyuan, Shen, Hongbin, and Qian, Biyun
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Genome-wide association studies (GWAS) have identified numerous genetic variants that are associated with lung cancer risk, but the biological mechanisms underlying these associations remain largely unknown. Here we investigated the functional relevance of a genetic region in 6q22.2 which was identified to be associated with lung cancer risk in our previous GWAS. We performed linkage disequilibrium (LD) analysis and bioinformatic prediction to screen functional SNPs linked to a tagSNP in 6q22.2 loci, followed by two case-control studies and a meta-analysis with 4403 cases and 5336 controls to identify if these functional SNPs were associated with lung cancer risk. A novel SNP rs17079281 in the DCBLD1promoter was identified to be associated with lung cancer risk in Chinese populations. Compared with those with C allele, patients with T allele had lower risk of adenocarcinoma (adjusted OR = 0.86; 95% CI: 0.80–0.92), but not squamous cell carcinoma (adjusted OR = 0.99; 95% CI: 0.91–1.10), and patients with the C/T or T/T genotype had lower levels of DCBLD1expression than those with C/C genotype in lung adenocarcinoma tissues. We performed functional assays to characterize its biological relevance. The results showed that the T allele of rs17079281 had higher binding affinity to transcription factor YY1 than the C allele, which suppressed DCBLD1 expression. DCBLD1 behaved like an oncogene, promoting tumor growth by influencing cell cycle progression. These findings suggest that the functional variant rs17079281C>T decreased lung adenocarcinoma risk by creating an YY1-binding site to suppress DCBLD1 expression, which may serve as a biomarker for assessing lung cancer susceptibility.
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- 2020
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18. Associations of Plasma BACE1 Level and BACE1 C786G Gene Polymorphism with Cognitive Functions in Patients with Type 2 Diabetes: A Cross- Sectional Study
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Tian, Sai, Huang, Rong, Guo, Dan, Lin, Hongyan, Wang, Jiaqi, An, Ke, and Wang, Shaohua
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Background: β-Site APP-cleaving enzyme 1 (BACE1) is a key enzyme involved in the pathophysiology of Type 2 Diabetes Mellitus (T2DM) and Mild Cognitive Impairment (MCI). We aimed to investigate the potential associations of plasma BACE1 levels and BACE1 gene polymorphism with different cognitive performances in T2DM patients with MCI. Methods: The recruited 186 T2DM subjects were divided into 92 MCI group and 94 healthy-cognition controls, according to the Montreal Cognitive Assessment (MoCA) scores. Sociodemographic characteristics, clinical parameters and neuropsychological tests were assessed. BACE1 C786G gene polymorphism and plasma BACE1 level were determined. Results: Compared to controls, MCI patients exhibited higher plasma BACE1 levels. Plasma BACE1 levels were negatively associated with MoCA, Clock Drawing Test and Logical Memory Test scores, whereas positively associated with Trail Making Test-B time in the MCI group (all p<0.05), after adjusting fasting blood glucose, glycosylated hemoglobin, and homeostasis model assessment of insulin resistance by C-peptide. Multivariable logistic regression analysis showed a significant trend towards increased MCI risk with high plasma BACE1 level in T2DM patients (OR = 1.492, p = 0.027). The plasma BACE1 levels of GG and GC genotypes were obviously higher than that of CC genotype in T2DM-MCI patients (p = 0.035; p = 0.026, respectively). Conclusion: Increased plasma BACE1 levels were associated with poor overall cognition functions, especially visuospatial abilities, visual/logical memory and executive functions in T2DM-MCI patients. Additionally, elevated plasma BACE1 level was a risk factor for MCI in T2DM patients, and might be influenced by BACE1 C786G gene mutations.
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- 2020
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19. Carboxylate-induced Various Structures of Ni(II) Complexes with Fluorescence Sensing and Bifunctional Electrochemical Properties.
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Lu, Xue, Liu, Guocheng, Wang, Xiang, Lin, Hongyan, and Wang, Xiuli
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- 2019
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20. Carboxylate-induced Various Structures of Ni(II) Complexes with Fluorescence Sensing and Bifunctional Electrochemical Properties
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Lu, Xue, Liu, Guocheng, Wang, Xiang, Lin, Hongyan, and Wang, Xiuli
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We synthesized three new Ni(II) coordination polymers [Ni(L)(HIP)(H2O)2]H2O(CP1), [Ni(L)(NIP)]·2H2O(CP2) and [Ni(L)(NDC)(H2O)2](CP3)[L=N,N'-bis(pyridine-3-yl)thiophene-2,5-dicarboxamide, H2HIP=5-hydroxyisophthalic acid, H2NIP=5-nitroisophthalic acid, H2NDC=2,6-naphthalenedicarboxylic acid] by hydrothermal method, which were characterized by means of infrared spectra(IR), TG analyses, PXRD and single-crystal X-ray diffraction. The CP1is a 1D tubular structure based on [Ni-HIP]2loops and pairs of L ligands. CP2is a 2D 3,5-connected architecture, which consists of Ni-L linear chains and (Ni-NIP)2double chains. CP3is a 2D network, which features 4-connected topology. Solid-state luminescent behaviours of CP1—CP3were investigated. The CP1can detect Fe3+ions through luminescence quenching. The electrochemical properties of CP1buk-modified carbon paste electrode(CP1-CPE) has also been investigated, which has bifunctional electrocatalytic activity for oxidation of ascorbic acid and reduction of NO2−.
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- 2019
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21. Elevated Plasma Level of D-dimer Predicts the High Risk of Early Cognitive Impairment in Type 2 Diabetic Patients as Carotid Artery Plaques become Vulnerable or Get Aggravated
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Wang, Jiaqi, Huang, Rong, Tian, Sai, Lin, Hongyan, Guo, Dan, An, Ke, and Wang, Shaohua
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Background and Objective: D-dimer prompts fibrinolysis system, which is involved in Alzheimer’s disease and the complications of type 2 diabetic patients, especially among those with carotid artery plaques. Hence, this study aims to investigate the role of D-dimer in early cognitive impairment among type 2 diabetic patients with carotid artery plaques. Methods: A total of 175 Chinese patients with type 2 diabetes were recruited and divided into two groups according to the Montreal Cognitive Assessment score. Demographic data were collected, plasma D-dimer was tested through VIDAS D-dimer New, neuropsychological tests were examined, and carotid artery plaques were detected by ultrasound and further stratified by vulnerability and level. Results: A total of 67 types 2 diabetic patients with Mild Cognitive Impairment (MCI) displayed significantly increased plasma D-dimer levels compared with their health-cognition controls (p = 0.011). Plasma D-dimer concentration was negatively related with Digit Span Test scores in diabetic patients with vulnerable plaques (r=-0.471, p=0.023) and Stroop Color Word Test C (number) in diabetic patients with stable plaques (r=-0.482, p<0.001). Multivariable regression analysis further showed that D-dimer concentration was an independent factor of diabetic MCI with carotid artery plaque (p=0.005), and D-dimer concentration especially contributed to the high risk of MCI with vulnerable plaques (p=0.028) or high levels of carotid plaque (p=0.023). Conclusion: Elevated D-dimer level predicts the high risk of early cognitive impairment in type 2 diabetic patients with carotid artery plaques, especially vulnerable plaques or high levels of carotid plaques.
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- 2019
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22. Syntheses, structure and properties of a 3 d-4 d/2-ptz heterometallic organic chain-modified POM-based framework.
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Wang, Xiang, Lin, Lin, Lin, Hongyan, and Liu, Guocheng
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- 2017
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23. QM/MM study on the O2activation reaction of 4-hydroxylphenyl pyruvate dioxygenase reveals a common mechanism for α-ketoglutarate dependent dioxygenase
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Li, Linhui, Lai, Suitian, Lin, Hongyan, Zhao, Xinyun, Li, Xin, Chen, Xi, Liu, Junjun, Yang, Guangfu, and Zhan, Changguo
- Abstract
The dioxygen activation catalyzed by 4-hydorxylphenyl pyruvate dioxygenase (HPPD) were reinvestigated by using hybrid quantum mechanics/molecular mechanics (QM/MM) approaches at the B3LYP/6-311++G(d,p):AMBER level. These studies showed that this reaction consisted of two steps including the dioxygen addition/decarboxylation and hetero OO bond cleavage, where the first step was found to be rate-determining. The former step initially runs on a septet potential energy surface (PES), then switches to a quintet PES after crossing a septet/quintet minimum energy crossing point (MECP) 5-7M2, whereas the rest step runs on the quintet PES. The reliability of our theoretical predictions is supported by the excellent agreement of the calculated free-energy barrier value of 16.9 kcal/mol with available experimental value of 16–17 kcal/mol. The present study challenges the widely accepted view which holds that the O2activation catalyzed by α-keto glutamate (α-KG) dioxygenase mainly runs on the quintet PES and provides new insight into the catalytic mechanism of α-KG dioxygenase and/or other related Fe(II)-dependent oxygenase.
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- 2023
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24. Three Ni(II) coordination polymers with various architectures based on asymmetric bis-pyridyl-amide and polycarboxylates: Syntheses, structures and properties.
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Wu, Xiaomei, Liu, Guocheng, Wang, Xiuli, Shao, Jiyan, Lin, Hongyan, and Wang, Xiang
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- 2016
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25. Effect of reaction conditions on the assembly, structures and fluorescent sensing behaviors of Cd(II) metal-organic complexes.
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Le, Mao, Luan, Jian, Zhao, Xunzhang, Tang, Tang, Chen, Panwen, Liu, Guocheng, and Lin, Hongyan
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- 2016
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26. Syntheses, structure and properties of a 3d-4d/2-ptz heterometallic organic chain-modified POM-based framework
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Wang, Xiang, Lin, Lin, Lin, Hongyan, and Liu, Guocheng
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A novel polyoxometalate-based hybrid modified by 3d-4d/2-ptz heterometallic organic chains[n-ptz= 5-(n-pyridyl)-tetrazolate], Ag2[Cu(2-ptz)2][β-Mo8O26]0.5·H2O(1)[2-ptz=5-(2-pyridyl)-tetrazolate], was synthesized under hydrothermal conditions. The 3D framework structure of compound 1was constructed from 1D novel 3d-4dheterometallic organic chains [CuAg2(2-ptz)2]2+as cationic complexes and [β-Mo8O26]4–polyoxoanions viaCu―O and Ag―O bonds, in which each [β-Mo8O26]4–polyoxoanion was surrounded by six such chains. The electrochemical and photocatalytic properties of compound 1 were investigated.
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- 2017
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27. Two new inorganic-organic hybrid compounds constructed from different polymolybdates and transition metal-amine subunits.
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Wang, Xiuli, Liu, Danna, Han, Na, Lin, Hongyan, Luan, Jian, and Tian, Aixiang
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- 2015
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28. Modified Podophyllotoxin Phenoxyacetamide Phenylacetate Derivatives: Tubulin/AKT1 Dual-Targeting and Potential Anticancer Agents for Human NSCLC
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Lin, Hongyan, Ai, Dongxuan, Liu, Qingqing, Wang, Xinling, Gao, Jiale, Chen, Qingqing, Ruan, Lingyu, Tao, Yuheng, Gao, Jian, and Wang, Liqun
- Abstract
Cancer is a major disease threatening human health worldwide, among which non-small-cell lung cancer (NSCLC) is the most deadly. Clinically, almost all anticancer drugs eventually fail to consistently benefit patients due to serious drug resistance. AKT is a key effector of the PI3K/AKT/mTOR pathway, which is closely related to the occurrence, development, and drug resistance of tumors. Herein, we first designed and synthesized 20 kinds of novel hybrid molecules targeting both tubulin and AKT based on a podophyllotoxin (PPT) skeleton through computer-aided drug design. By CCK8 assay, we screened the compound D1-1(IC50= 0.10 μM) with the strongest inhibitory activity against H1975 cells, and its activity was 100 times higher than PPT (IC50= 12.56 μM) and 300 times higher than gefitinib (IC50= 32.15 μM). Affinity analysis results showed that D1-1not only retained the tubulin targeting of PPT but also showed strong AKT targeting. Subsequent pharmacological experiments showed that D1-1significantly inhibited the proliferation and metastasis of H1975 cells and slightly induced their apoptosis by inhibiting both tubulin polymerization and the AKT pathway activation. Collectively, these data demonstrate that the novel hybrid molecule D1-1may be an excellent lead compound for the treatment of human NSCLC as a dual inhibitor of tubulin and AKT.
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- 2023
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29. Three Ni(II) coordination polymers with various architectures based on asymmetric bis-pyridyl-amide and polycarboxylates: Syntheses, structures and properties
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Wu, Xiaomei, Liu, Guocheng, Wang, Xiuli, Shao, Jiyan, Lin, Hongyan, and Wang, Xiang
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Three different dimensional Ni(II) coordination polymers, [Ni(3-pna)(HIP)(H2O)3]·H2O(1), [Ni(3-pna)· (1,3,5-HBTC)](2) and [Ni2(H2O)(3-pna)2(1,4-CHDC)2]4(3)(3-pna=3-pyridylnicotinamide, H2HIP=5-hydroxyisophthalic acid, 1,3,5-H3BTC=1,3,5-benzenetricarboxylic acid, 1,4-H2CHDC=1,4-cyclohexanedicarboxylic acid), were synthesized under hydrothermal conditions and characterized by means of infrared spectra(IR), thermal gravimetric (TG) analyses, powder X-ray diffraction(PXRD) and single-crystal X-ray diffraction. Complex 1has a structure of 1D single-stranded chain, which is further stretched by hydrogen-bond interactions to form a 2D supramolecular sheet. Complex 2shows a 2D network, which is stretched to 3D supramolecular frameworks through hydrogen-bond interactions. Complex 3 reveals a 3D skeleton with a (3,3,6,6)-connected {3·72}{32·4}{33·42·5·73·85·9}{33·45·52·72·82·9} topology. The effects of different polycarboxylates on the ultimate architectures of the complexes 1—3were discussed. Furthermore, the fluorescent and photocatalytic properties of the title complexes were also investigated.
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- 2016
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30. Effect of reaction conditions on the assembly, structures and fluorescent sensing behaviors of Cd(II) metal-organic complexes
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Le, Mao, Luan, Jian, Zhao, Xunzhang, Tang, Tang, Chen, Panwen, Liu, Guocheng, and Lin, Hongyan
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Three Cd(II) metal-organic complexes, namely [Cd(phen)2Cl2](1), [Cd(phen)Cl2](2) and [Cd(phen)(cam)]· H2O(3)(phen=1,10-phenanthroline, H2cam=camphoric acid), were hydrothermally synthesized using Cd2+, phen and H2cam as raw materials under different conditions of pH values, reaction temperatures or reactant ratios. The prepared complexes were structurally characterized by means of single-crystal X-ray diffraction, and the results show that complex 1is a 2D supramolecular complex, which consists of [Cd(phen)2Cl2] mononuclear subunits, while complex 2shows a 1D chain structure, in which Cd(II) ions are connected by chloride(Cl–) bridges, with phen hanging on both sides of the chain. No cam anions have been observed in the structures of complexes 1and 2. In complex 3, cam connects Cd(II) ions to construct a 2D network, in which phen acts as terminal ligands. The adjacent 1D chains for complex 2and the adjacent 2D layers for complex 3are further linked by hydrogen bonding interactions or π-π intermolecular interactions to form 3D supramolecular networks, respectively. The effects of reaction conditions on the assembly and structures of the complexes have been discussed. The fluorescent and photocatalytic properties of complexes 1―3and the fluorescent sensing behaviors of complexes 2and 3have also been investigated.
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- 2016
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31. Influence of SMS Advertising on Consumer Behavioral Intention
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Lin, Hongyan and Chen, Zhankui
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Mobile marketing has become an effective medium for advertisers. Effective mobile advertising could greatly improve customers purchase intention in this context. This study focuses on the prevailing form of mobile advertising, i.e., SMS advertising. Based on the theory of planned behavior, the authors explore the influence of SMS advertising on the consumer behavior in China. Participants are Chinese students and office workers. The results indicate that (a) the perceived infotainment and credibility have a positive significant effect on consumer attitudes, whereas irritation has a negative significant effect on consumer attitudes; (b) attitudes, subjective norms, and perceived behavior control have significant effects on the intention to use; (c) attitudes also mediate the relationship between subjective norms and intention to use; and (d) men and women pursue different paths to influence the intention to use. Based on the above results, theoretical and practical implications are also discussed in this study.
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- 2015
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32. Two new inorganic-organic hybrid compounds constructed from different polymolybdates and transition metal-amine subunits
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Wang, Xiuli, Liu, Danna, Han, Na, Lin, Hongyan, Luan, Jian, and Tian, Aixiang
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Two new polyoxometalate(POM)-based hybrid compounds, [Cu(en)][H4Mo4O16]0.5(1)(en=ethylenediamine) and [Ag(3-C5H6N2)2][H2PMo12O40](2)(3-C5H6N2=3-aminopyridine), containing different transition metalamine subunits were hydrothermally synthesized and characterized by elemental analyses, infrared spectroscopy and single-crystal X-ray diffraction. For compound 1, each [H4Mo4O16]4(Mo4O16) cluster was linked to four neighboring Mo4O16clusters through four [Cu(en)]2+subunits to yield a (2,4)-connected 2D layer, which was further extended to a 3D supramolecular network via hydrogen bonding interactions. For compound 2, the adjacent [H2PMo12O40]–clusters were bridged by [Ag(3-C5H6N2)2]+subunits to generate a 1D chain. The electrochemical behaviors and the photocatalytic activities of compounds 1 and 2 were studied in detail.
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- 2015
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33. Biodegradation of crystal violet using Burkholderia vietnamiensis C09V immobilized on PVA–sodium alginate–kaolin gel beads.
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Cheng, Ying, Lin, HongYan, Chen, Zuliang, Megharaj, Mallavarapu, and Naidu, Ravi
- Subjects
GENTIAN violet ,BIODEGRADATION ,BURKHOLDERIA ,IMMOBILIZED cells ,POLYMER colloids ,SODIUM alginate ,KAOLIN ,POLYVINYL alcohol ,AMINOPHENOLS ,KETONES ,INTERMEDIATES (Chemistry) ,BACTERIA - Abstract
Abstract: The strain, Burkholderia vietnamiensis C09V was immobilized on PVA–alginate–kaolin gel beads as a biomaterial to improve the degradation of crystal violet from aqueous solution. The results show that 98.6% (30mgL
−1 ) crystal violet was removed from aqueous solution using immobilized cells on PVA–alginate–kaolin gel beads, while 94.0% crystal violet was removed by free cells after degradation at the pH 5 and 30°C for 30h. Kinetics studies show that the pseudo-second-order kinetics well described the adsorption of crystal violet on the PVA–alginate–kaolin beads. Biodegradation of crystal violet on immobilized cells was fitted well by first-order reaction kinetics, indicating that CV was adsorbed onto kaolin and followed their degradation by immobilized cells onto the the PVA–alginate–kaolin beads. Characterization with SEM shows that cells attached well to the surface of PVA–alginate–kaolin beads, leading to improved crystal violet transfer from aqueous solution to immobilized cells. In addition, UV–vis show that the absorption peak at 588nm was reduced by the degraded N-bond linkages, as well as the formation of degrading products were observed by Fourier transform infrared (FTIR). These results suggest that crystal violet was biodegraded to N,N-dimethylaminophenol and Michler''s Ketone prior to these intermediates being further degraded. [Copyright &y& Elsevier]- Published
- 2012
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34. Substituent groups from aromatic dicarboxylates modulated structural diversification in the assembly of Co(II) complexes based on the bis-pyridyl-bis-amide ligands
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Wang, XiuLi, Mu, Bao, Lin, HongYan, Yang, Song, Liu, GuoCheng, Tian, AiXiang, and Zhang, JuWen
- Abstract
Four coordination polymers based on two bis-pyridyl-bis-amide ligands and three aromatic dicarboxylates with different substituent groups, namely, [Co(3-bpcb)1.5(NPH)(H2O)]·4H2O (1), [Co(3-bpcb)(NIPH)] (2), [Co(3-bpcb)0.5(5-H2AIP)]·2H2O (3), [Co(3-bpcd)0.5(5-H2AIP)(H2O)]·2H2O (4) [3-bpcb =N,N′-bis(3-pyridinecarboxamide)-1,4-benzene, 3-bpcd= N,N′-bis(3 pyridine)cyclohexane-1,4-dicarboxamide, H2NPH = 3-nitrophthalic acid, H2NIPH = 5-nitroisophthalic acid, 5-H4AIP = 5-aminoisophthalic acid] have been synthetized under hydrothermal conditions. Complex 1displays a one dimensional (1D) chain based on the binuclear [Co2(NPH)2] units and 3-bpcbligands, which is extended into a three dimensional (3D) supramolecular framework through hydrogen bonding and π-π stacking interactions. In complex 2, the (3,5)-connected two dimensional (2D) layers are constructed from 1D Co-NIPH chains and bidentate-bridging 3-bpcbligands. Complex 3is a 2D double layer based on Co-5-H2AIP 2D layers and 3-bpcbpillars. Complex 4also displays a 2D network, which is constructed from the Co-5-H2AIP 1D double chains and 3-bpcdligands. Finally, complexes 2-4are extended into 3D supramolecular frameworks by hydrogen bonding or π-π stacking interactions. The substituent groups of dicarboxylates play an important role in the assembly and structures of the title complexes. In addition, the fluorescent properties of complexes 1–4and the electrochemical behaviors of 3and 4at room temperature have been investigated.Four coordination polymers based on two bis-pyridyl-bis-amide ligands and three aromatic dicarboxylates with different substituent groups, namely, [Co(3-bpcb)1.5(NPH)(H2O)]·4H2O (1), [Co(3-bpcb)(NIPH)] (2), [Co(3-bpcb)0.5(5-H2AIP)]·2H2O (3), [Co(3-bpcd)0.5(5-H2AIP)(H2O)]·2H2O (4) [3-bpcb =N,N′-bis(3-pyridinecarboxamide)-1,4-benzene, 3-bpcd= N,N′-bis(3 pyridine)cyclohexane-1,4-dicarboxamide, H2NPH = 3-nitrophthalic acid, H2NIPH = 5-nitroisophthalic acid, 5-H4AIP = 5-aminoisophthalic acid] have been synthetized under hydrothermal conditions. Complex 1displays a one dimensional (1D) chain based on the binuclear [Co2(NPH)2] units and 3-bpcbligands, which is extended into a three dimensional (3D) supramolecular framework through hydrogen bonding and π-π stacking interactions. In complex 2, the (3,5)-connected two dimensional (2D) layers are constructed from 1D Co-NIPH chains and bidentate-bridging 3-bpcbligands. Complex 3is a 2D double layer based on Co-5-H2AIP 2D layers and 3-bpcbpillars. Complex 4also displays a 2D network, which is constructed from the Co-5-H2AIP 1D double chains and 3-bpcdligands. Finally, complexes 2-4are extended into 3D supramolecular frameworks by hydrogen bonding or π-π stacking interactions. The substituent groups of dicarboxylates play an important role in the assembly and structures of the title complexes. In addition, the fluorescent properties of complexes 1–4and the electrochemical behaviors of 3and 4at room temperature have been investigated.
- Published
- 2013
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35. Two Hybrid Compounds Constructed from Vanadate Clusters and Secondary Metal‐Bis(imidazole) Subunits
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Wang, Xiuli, Hu, Hailiang, Chen, Baokuan, Lin, Hongyan, Liu, Guocheng, and Li, Jin
- Abstract
Two new inorganic–organic vanadate hybrid compounds [Mn(Hbbi)2(V4O12)] (1) and [Cd(Hbbi)2(V4O12)] (2) (bbi = 1,1’‐(1,4‐butanediyl)bis(imidazole)) were hydrothermally synthesized and characterized by elemental analyses, IR spectroscopy, TG and single‐crystal X‐ray diffraction. The two compounds crystallize in monoclinic system, P21/cspace group with a= 8.556(5) Å, b= 10.761(5) Å, c= 16.917(5) Å, β= 93.032(5) o, V= 1555.4(12) Å3, Z= 2, R= 0.0390 for 1and a= 8.657(5) Å, b= 10.743 (5) Å, c= 16.864 (5) Å, β= 93.81(5)o, V= 1564.9 (12) Å3, Z= 2, R= 0.0717 for 2. Single‐crystal X‐ray diffraction analysis reveals that the two compounds are isostructural and both consist of one‐dimensional (1D) chains, which are constructed from vanadate anion clusters and [M(Hbbi)2]4+cation groups [M = MnII(1), CdII(2)]. Moreover, the polymeric chains are ultimately packed into a three‐dimensional (3D) supramolecular framework through C–H···O and N–H···O hydrogen bonding interactions.
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- 2009
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36. Renewable New Copper Complex Bulk‐Modified Carbon Paste Electrode: Preparation, Electrochemistry, and Electrocatalysis
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Wang, Xiuli, Zhao, Haiyan, Lin, Hongyan, Liu, Guocheng, Fang, Jiani, and Chen, Baokuan
- Abstract
A conductive carbon paste electrode (CPE) comprised of a new copper‐complex of [Cu2(Dpq)2(Ac)2(H2O)2](ClO4)2⋅H2O (Dpq=dipyrido[3,2‐d : 2′,3′‐f]quinoxaline, Ac=acetate) and carbon powder, was fabricated by the direct mixing method. The electrochemical behavior and electrocatalysis of the new copper‐complex modified CPE (Cu‐CPE) have been studied in detail. Cyclic voltammograms showed that the Cu‐CPE had a favorable electrochemical response of a reversible redox couple of Cu(II)/Cu(I). The Cu‐CPE showed good electrocatalytic activity toward the reduction of the bromate, nitrite and hydrogen peroxide. The electrocatalytic reduction peak current of KBrO3, KNO2and H2O2showed a linear dependent on their concentrations. All of the results revealed that the Cu‐CPE had a good reproducibility, remarkable long term stability and especially good surface renewability by simple mechanical polishing in the event of surface fouling, which is important for practical application.
- Published
- 2008
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