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12 results on '"Gui Yu"'

1. Large π-Conjugated Quinacridone Derivatives: Syntheses, Characterizations, Emission, and Charge Transport Properties

Author

Gui Yu, Kui Tian, Kaiqi Ye, Yue Wang, Weiping Chen, Zuolun Zhang, and Xiaoxian Song

Subjects
Electron mobility, Chemistry, Organic Chemistry, Conjugated system, Photochemistry, Biochemistry, Chloride, chemistry.chemical_compound, Quinacridone, medicine, Ferric, Knoevenagel condensation, Physical and Theoretical Chemistry, Solubility, HOMO/LUMO, medicine.drug
Abstract

Two 11-ring-fused quinacridone derivatives, TTQA and DCNTTQA, have been synthesized by ferric chloride mediated cyclization and Knoevenagel reaction. Replacement of the carbonyl groups (in TTQA) with dicyanoethylene groups (in DCNTTQA) not only red-shifted the emission to the near-infrared region but also led to a nonplanar skeleton that significantly improved the solubility of DCNTTQA. Moreover, dicyanoethylene groups rendered DCNTTQA low-lying HOMO and LUMO levels. DCNTTQA-based solution-processed field-effect transistors showed a hole mobility up to 0.217 cm(2) V(-1) s(-1).

Published
2015

4. Novel Butterfly-Shaped Fused Heteroacenes: Synthesis, Properties, and Device Performance of Solution-Processed Field-Effect Transistors

Author

Xiangnan Sun, Gui Yu, Daoben Zhu, Yunqi Liu, Pingfang Xia, Man Shing Wong, Weifeng Zhang, and Jianyao Huang

Subjects
Electron mobility, business.industry, Chemistry, Organic Chemistry, Transistor, Halogenation, Nanotechnology, Ring (chemistry), Biochemistry, law.invention, Solution processed, law, Optoelectronics, Field-effect transistor, Physical and Theoretical Chemistry, business
Abstract

Two tetrabrominated intermediates obtained by bromination of naphthodithiophene in different solvents were used to construct novel highly π-extended butterfly-shaped heteroarenes 1-6, containing either an 8- or 10-fused ring. The solution-processed organic field-effect transistors based on compound 1 exhibited promising device performance with a hole mobility of 0.072 cm(2) V(-1) s(-1) and a current on/off ratio of 10(6) under ambient atmosphere.

Published
2012

5. Dibenzoannelated Tetrathienoacene: Synthesis, Characterization, and Applications in Organic Field-Effect Transistors

Author

Yunlong Guo, Huajie Chen, Minliang Zhu, Gui Yu, Jianyao Huang, Weifeng Zhang, Hao Luo, Liping Wang, and Yunqi Liu

Subjects
Molecular Structure, Chemistry, Semiconductor properties, Organic Chemistry, Transistor, technology, industry, and agriculture, Nanotechnology, Electrochemical Techniques, Thiophenes, equipment and supplies, Electrochemistry, Biochemistry, Characterization (materials science), law.invention, Semiconductors, law, Structural isomer, Molecule, Field-effect transistor, Physical and Theoretical Chemistry
Abstract

Two structural isomers of six-fused-ring sulfur-containing molecules were synthesized as active materials for p-type organic field-effect transistors, and their optical and electrochemical properties were characterized. Field-effect transistors based on these compounds were fabricated to investigate the relationships between structures and semiconductor properties.

Published
2012

6. Septosones A–C, in Vivo Anti-inflammatory Meroterpenoids with Rearranged Carbon Skeletons from the Marine Sponge Dysidea septosa

Author

Gui, Yu-Han, Jiao, Wei-Hua, Zhou, Mi, Zhang, Yun, Zeng, De-Quan, Zhu, Hong-Rui, Liu, Ke-Chun, Sun, Fan, Chen, Hai-Feng, and Lin, Hou-Wen

Abstract

Three unusual meroterpenoids, septosones A–C (1–3), were isolated from the marine sponge Dysidea septosa. The structures were determined by analysis of spectroscopic data combined with single-crystal X-ray diffraction and ECD calculations. Septosone A (1) features an unprecedented “septosane” carbon skeleton, whereas septosones B (2) and C (3) share a rare spiro[4.5]decane motif. Septosone A showed in vivo anti-inflammatory activity in CuSO4-induced transgenic fluorescent zebrafish likely through inactivation of the NF-κB signaling pathway.

Published
2018
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7. Bent ladder-type hexaphenylene with carbazole core and spiro linkage as stable and efficient blue emitter

Author

Zuo-Quan Jiang, Zhongyin Liu, Chuluo Yang, Haiqing Yao, Jingui Qin, Gui Yu, Yunqi Liu, and Cheng Zhong

Subjects
Core (optical fiber), chemistry.chemical_compound, Crystallography, chemistry, Carbazole, Organic Chemistry, Bent molecular geometry, Physical and Theoretical Chemistry, Photochemistry, Biochemistry, Luminance, Common emitter
Abstract

A bent ladder-type hexaphenylene with a carbazole core and spiro-linkage is designed and synthesized by using the ortho-linked spirobifluorene. The design eliminates the possibility of forming a positional isomer. As a blue-emitter, the BLHPC shows good thermal and color stability. A simple light-emitting device fabricated from BLHPC exhibits a maximum current efficiency of 1.46 cd/A and a maximum luminance of 505 cd/m(2).

Published
2009

8. Trifluoromethyltriphenodioxazine: air-stable and high-performance n-type semiconductor

Author

Gui Yu, Yi Xiao, Xuhong Qian, Daoben Zhu, Yunlong Guo, Chong-an Di, Yunqi Liu, and Jing Li

Subjects
Molecular Structure, business.industry, Chemistry, Air, Organic Chemistry, Transistor, X-ray, Molecular Conformation, Electrochemistry, Crystallography, X-Ray, Biochemistry, Molecular conformation, law.invention, Semiconductor, Semiconductors, law, Thin-film transistor, Oxazines, Optoelectronics, Molecule, Physical and Theoretical Chemistry, business, Extrinsic semiconductor
Abstract

Two trifluoromethyltriphenodioxazines were efficiently synthesized as active materials for n-type organic field-effect transistors, and their optical and electrochemical properties were characterized. Air-stable and high-performance thin film transistors based on the two compounds were fabricated.

Published
2008

9. First synthesis of 2,3,6,7-tetrabromonaphthalene diimide

Author

Xike Gao, Wenfeng Qiu, Xiaodi Yang, Yunqi Liu, Ying Wang, Hengjun Zhang, Ting Qi, Ying Liu, Kun Lu, Chunyan Du, Zhigang Shuai, Gui Yu, and Daoben Zhu

Subjects
chemistry.chemical_compound, Chemistry, Diimide, Organic Chemistry, Polymer chemistry, Proton NMR, Organic chemistry, Physical and Theoretical Chemistry, Carbon-13 NMR, Biochemistry
Abstract

N,N'-Bis(n-octyl)-2,3,6,7-tetrabromonaphthalene diimide (TBNDI) was synthesized by a new imidization reaction and characterized by HRMS, (1)H NMR, (13)C NMR, elemental analyses, FT-IR, UV-vis, and single-crystal X-ray analysis. The TBNDIs are the key precursors for the synthesis of core-tetrasubstituted-naphthalene diimides.

Published
2007

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