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A series of porous confined ionic liquid phosphotungstate were synthesized by encapsulated of N-(3-sulfopropyl)morpholinium phosphotungstate ([C3SO3Hnhm]3 -PW12O40) into MIL-101. Then the aforementioned porous confined ionic liquid phosphotungstate as heterogeneous catalyst will be used together with H2O2 for the catalytic synthesis of adipic acid from cyclohexene. During the experiment, the effect of weight content of [C3SO3Hnhm]3PW12O40 on the catalytic performance was investigated in detail. And the chemical structure of the catalyst was also characterized by XRD, FT-IR, 1H-NMR, SEM–EDX and N2 adsorption–desorption isotherms. Experimental results revealed that the desired products has been successfully prepared, and the best catalytic performance (81.2% yield of the adipic acid) was obtained under the dose of [C3SO3Hnhm]3PW12O40 was 31wt%, which was almost close to the catalytic activity of original [C3SO3Hnhm]3PW12O40 (85.3% yield of the adipic acid), which was also proved the strategy of packaging ionic liquid phosphotungstate with MIL-101 in this research is feasible. Furthermore, recycled catalytic performance of the catalyst under repeat 6 times was evaluated and the result revealed that the yield in adipic acid was still higher than 80.0%, which also proved that the catalytic active component was stable in the catalyst. [ABSTRACT FROM AUTHOR]

In this study, we prepared a novel composite membrane (QCS-IRMOF-3) by attaching IRMOF-3 (metal–organic framework materials, formed by coordination of metallic zinc and 2-aminoterephthalic acid) with a free amino group to a quaternized chitosan (QCS) by chemical cross-linking. The successful synthesis of IRMOF-3 was verified by SEM, XRD, and FT-IR. Then, the mechanical properties, swelling properties, ion exchange capacity, hydroxide conductivity and chemical stability of the composite membrane (QCS-IRMOF-3) were also investigated. It was found that the performance of the aforementioned composite membrane was affected obviously by the amount of IRMOF-3 crystals. The composite membrane doped with 15 wt% IRMOF-3 crystals exhibits better overall performance, which included that the tensile strength is 22.4 MPa, water uptake is 78.4%, hydroxide conductivity is 29.9 mS cm−1 at 80 °C, and after immersion in 6.0 mol L−1 KOH solutions at 60 °C for about 240 h, only the conductivity decreased by less than 10%. This result implies that the composite membrane synthesized in this research is promising for application in alkaline polymer electrolyte fuel cells. [ABSTRACT FROM AUTHOR]

Summary: A series of anion exchange membranes (quaternized chitosan/cation metal‐organic framework [MIL‐X‐QCS]) were prepared via purposeful inserting the cationic metal‐organic framework as the multifunctional filler into quaternized chitosan (QCS). The successful preparation of the anion exchange membrane was confirmed by X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FT‐IR), and Scanning electron microscope (SEM). In this research, we converted the charge‐balanced MOFs skeleton Cr‐MIL‐101 into the cationic metal skeleton (Cr‐MIL‐101)+Cl− by anion stripping, and cooperated with quaternary amine groups to construct a high‐speed OH− transmission channel. The introduction of a rigid MOF structure reduces the water uptake and swelling ratio of the composite membrane by 27% and 37%, respectively. At 80°C, the OH− conductivity of the MIL‐9‐QCS membrane (The composite membrane doped with 9 wt% Cr‐MIL‐101 crystals) reaches 2.30 × 10−2 S·cm−1 and the power density reached its maximum (90.2 mW·cm−2), and the tensile strength reaches 20.12 MPa, which was higher than 18.7 MPa of Nafion‐115 membrane. The spatial network structure of MOFs reduced the methanol permeability of MIL‐9‐QCS membrane by 24% compared with the original QCS membrane. Furthermore, the MIL‐9‐QCS composite membrane exhibited excellent alkali stability, where after being soaked in 2 mol L−1 NaOH solution at 60°C for 240 hours, its OH− conductivity still reached 77% of the initial value. [ABSTRACT FROM AUTHOR]

A new microporous Ni-based metal-organic framework (Ni-MOF-1) was synthesized by reaction of Ni(NO) 3 ·6H 2 O with the binary ligands of tetracarboxylic 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine (H 4 TCPP) and 4,4′-bipyridine under solvothermal reaction. The single crystal X-ray diffraction indicates that Ni-MOF-1 possesses a three-dimensional porous network with novel trinuclear Ni 3 (OH) 2 (COO) 4 (HCOO) 4 clusters, exhibiting high CO 2 uptakes of 37.57 cm3 g−1 and high selectivity of CO 2 over N 2 (42.89) at 273 K. A new Ni-based metal-organic framework with a novel Ni 3 (OH) 2 (COO) 4 (HCOO) 4 clusters was reported which exhibits high selectivity for CO 2 adsorption from CO 2 /N 2 gas mixtures. Unlabelled Image • A new MOF with a novel trinuclear nickel cluster was reported. • Ni-MOF-1 exhibits a moderate heats of CO 2 adsorption for facile regeneration. • Ni-MOF-1 shows a high selectivity of CO 2 over N 2. [ABSTRACT FROM AUTHOR]

Exploring a nanozyme as a nanocarrier for the enzyme-labeled antibodies (ELA) in the enzyme-linked immunosorbent assay (ELISA) is beneficial in improving the analytical performance of ELISA. Herein, a white Fe-based coordination polymer nanozyme (FCPN) was fabricated as a nanocarrier for the ELA to improve the catalytic activity and relieve the color interference of nanoprobes in ELISA. The proposed enhanced catalytic immunoassay (ECI) exhibits high analytical performance for the quantification of clenbuterol (CLL) in the detection range of 0.09–10 ng mL−1 with a limit of detection (LOD) as low as 0.09 ng mL−1, improving the detection sensitivity nearly 3.5 times compared with the conventional ELISA. Meanwhile, the usage of anti-CLL monoclonal antibodies in this proposed ECI was economizes by 6.7 times and the detection sensitivity was increased by nearly 4.5 times compared with our previous research. In addition, the detection sensitivity of the ECI using a white nanozyme as a nanocarrier is 2.3 times higher than using a blue Cu-based metal organic framework (Cu-MOF) nanozyme. Meanwhile, the applicability of the proposed ECI was successfully demonstrated by the detection of CLL in pork meat and pork liver with recoveries ranging from 92.51% to 110.16%. • Improved sensitivity and a wider detection range are both obtained in this assay. • The white FCPN nanozymes have higher analytical performances over blue Cu-MOF. • This assay economizes the usage of antibodies compared with our previous work. [ABSTRACT FROM AUTHOR]

In this paper, three new cobalt-based metal organic frameworks (MOFs) with different topologies, namely, {[Co(HL)(tib)(H2O)]·2H2O}n (1), [Co3(L)2(bibp)4(H2O)2]n (2) and [Co2(L)(bip)(μ3-OH)]n (3) (H3L = 3-(3,5-dicarboxylphenoxy)-6-carboxylpyridine, tib = 1,3,5-tirs(1-imidazolyl)benzene, bibp = 4,4′-bis(imidazolyl)biphenyl, bip = 3,5-bis(imidazoly-1-yl)toluene) synthesized by a hydrothermal method, were investigated. Different auxiliary ligands led to the diversity of the three MOFs in terms of structure and properties. Hereafter, the adsorption properties of the MOFs on different dyes were investigated; of interest is that the adsorption performance of MOF 3 on Congo red dye is particularly outstanding, including excellent performance in terms of removal rates, selectivity and recyclability. Its adsorption kinetics and adsorption isotherms were also investigated. Finally, its possible adsorption mechanism was analyzed by zeta potential measurements, infrared spectroscopy and N2 adsorption–desorption isotherms. It was hypothesized that the exquisite confined microenvironments consisting of electrostatic interactions, a suitable pore volume, and complicated van der Waals forces of hydrogen bonding and π–π stacking played a critical role during the adsorption process. It was shown that MOF 3 can be used as an effective adsorbent for the adsorption of Congo red dye in wastewater. [ABSTRACT FROM AUTHOR]

• Fe-Co@NC-CNTs were fabricated via N -molecule assisted pyrolysis of MOFs. • Fe-Co@NC-CNTs/PVDF catalytic membrane was fabricated through directional freezing technique. • Fe-Co@NC-CNTs/PVDF membrane achieved almost 100% bisphenol A (BPA). • Fe-Co@NC-CNTs/PVDF membrane exhibited ideal catalytic self-cleaning property in humic acid (HA)-BPA coexistence system. • Fe-Co@NC-CNTs/PVDF membrane maintained the excellent reusability and ultrahigh water flux. Currently, carbon-based catalysts integrated with macroporous catalytic membrane have aroused considerable attention for environmental remediation because of its practicability and high efficiency. Herein, nitrogen doped carbon nanotube hybrids (Fe-Co@NC-CNTs) decorated with multiple active species (Fe 3 Co 7 /CoFe 2 O 4 @Fe/Co N C) were designed through N -molecule assisted pyrolysis of bimetallic (Fe/Co) metal–organic frameworks, and then immobilized on poly(vinylidene fluoride) (PVDF) membrane to construct macroporous Fe-Co@NC-CNTs/PVDF catalytic membrane via directional freezing technique, where active sites were efficiently exposed for oxidants and target pollutants. As expected, Fe-Co@NC-CNTs/PVDF membrane successfully achieved almost 100% bisphenol A (BPA) degradation after 40 min via PMS activation, which was significantly overperformed the majority of conventional carbon-based catalysts. Besides, we found that Fe-Co@NC-CNTs/PVDF membrane not only exhibited ideal catalytic and self-cleaning property in humic acid (HA)-BPA coexistence system, but also maintained the excellent reusability and ultrahigh water flux (10464.45 L m−2 h−1) even after 5 cycles. Notably, in EPR analysis and quenching experiments, it was found that sulfate radicals (SO 4 ·− and ·OH) and singlet oxygen (1O 2) participated the degradation process while 1O 2 made a major contribution. More significantly, this study is very meaningful for the development of novel catalytic self-cleaning membranes with PMS activation. [ABSTRACT FROM AUTHOR]

• Two novel Co-mofs show unparalleled topologies frameworks. • Co-MOF 2 has proposed ultra-high adsorption capacity on CR (capacity: 810.7 mg g-1). • Co-MOF 2 has excellent adsorption potential in CR from the real wastewater. Removal the hazards of Azo organic dyes from waterbody through porous heterogeneous materials is considered as a low-cost and high-efficient method. Intriguingly, two metal organic frameworks (MOFs), {[C o 3 (L) 3 (H 2 O)]·3.5(C 4 H 2 O 2)} n and [Co 4 (L) 4 (bit) 2 ] n designated as MOF 1 and 2 , have been synthesized through the traditional solvothermal method. MOF 2 exhibits significant removal effect on organic dye (congo red (CR)) from waterbody owing to more imidazole rings in the structure than 1. After optimizing the experimental conditions, the highest adsorption capacity (810.7 mg g-1) and high removal rate (97.28%) of 2 are obtained in 500 ppm CR solution. Pseudo second-order kinetics and Langmuir isotherms more accurately described the adsorption process of 2. In addition, 2 exhibits high recyclability, stability and adsorption performance through a simple organic solvent release system. Moreover, 2 also exhibits high adsorption performance in real wastewater. The possible mechanism of selective adsorption involves the π-π stacking interaction, hydrogen bond, synergistic effect of electrostatic interaction and pore filling. All the bench experiments have indicated that 2 is a promising potential sorbent in the practical wastewater treatment and CR dyes recovery. Preliminary screening displays that 2 has proposed ultra-high adsorption capacity on CR, and its maximum adsorption capacity could reach 810.7 mg g-1. In addition, the adsorption process in accordance with the Langmuir isothermal model and the second-order kinetic model. Even in dye mixtures, CR could be selectively adsorbed, and the removal rate maintained 88% after six cycles. Finally, through dye classification, infrared analysis, SEM and BET tests, it was supposed that the adsorption of CR by 2 with the synergistic of electrostatic, π-π stacking and hydrogen bond interaction. In actual river water, the maximum adsorption capacity is as high as in bench results in deionization system. Therefore, our work provided 2 has excellent adsorption performance and potential application in CR extraction from the real wastewater. [Display omitted] [ABSTRACT FROM AUTHOR]

The engineered nanoformulation that can be activated by intracellular tumor microenvironment, including acidic pH, overexpressed H2O2, and high concentration of glutathione (GSH), features high efficacy to eradicate tumor cells with the intrinsic specificity and therapeutic biosafety. However, the relatively slow reaction rate of traditional Fe2+-mediated Fenton reaction induces the low production amount of reactive oxygen species (ROS) and subsequently the limited therapeutic outcome against tumors. Here, we established Cu (II)-based two-dimensional (2D) metal–organic framework (MOF) nanosheets as a distinct chemoreactive nanocatalyst for GSH-triggered and H2O2-augmented chemodynamic therapy (CDT), depending on the "AND" logic gate, for significant tumor suppression. After internalization by tumor cells, the MOF catalytic nanosheets reacted with local GSH for inducing GSH consumption and reducing the Cu2+ into Cu+. Subsequently, abundant hydroxyl radicals (·OH) generation was achieved via Cu+-mediated Fenton-like catalytic reaction. The dual effects of ·OH production and GSH depletion thus enhanced ROS production and accumulation in tumor cells, leading to significant cellular apoptosis and tumor inhibition, which was systematically demonstrated in both 4T1 and MDA-MB-231 tumor models. Therefore, GSH and H2O2, serve as an "AND" logic gate to trigger the Cu+-mediated Fenton-like reaction and reduce GSH level for augmented CDT with high therapeutic specificity and efficacy, thus inducing cellular apoptosis primarily through ferroptosis at the RNA sequence level. [ABSTRACT FROM AUTHOR]

Two novel Co (II) MOFs based on 5-(4-(imidazolyl-1-yl)phenyl) isophthalic acid (H 2 L), namely [Co(L)(tib)(H 2 O) 2 ] n (CP 1) and [Co(L)(bip) 0.5 ] n (CP 2) (tib ​= ​1,3,5-tirs (1-imidazolyl) benzene, bip ​= ​3,5-bis(1-imidazolyl) pyridine ether) have been synthesized under solvothermal conditions and characterized by powder X-ray diffraction, single crystal X-ray diffraction. The photodegradation studies demonstrate that CPs 1 – 2 show high-efficiency degradation of MV (Methyl violet), and the mechanism studies demonstrate that the main active species are ⋅OH radicals. Meanwhile, electrochemistry studies demonstrate that CPs 1 – 2 can catalyze water oxidation under alkaline conditions, and CPs 1 – 2 only need the overpotential of 348 ​mV–760 mV to deliver the current density of 1 ​mA ​cm−2. Two novel Co (II) MOFs (CP 1 and CP 2) have been synthesized by H 2 L, tib, and bip. The photodegradation studies demonstrate that CPs 1-2 show high-efficiency degradation of MV. Simultaneously, electrochemistry studies show that CPs 1-2 could catalyze water oxidation with relatively low overpotential. [Display omitted] • Two novel Co-based MOFs were synthesized by solvothermal method. • Exhibit efficient photocatalytic degradation abilities towards MV/MB in aqueous solution. • Only need the overpotential of 348 ​mV–760 mV to deliver the current density of 1 ​mA ​cm−2. [ABSTRACT FROM AUTHOR]

In this work, five novel Cd/Zn-based MOFs with different topological framework, namely {[Cd(bimb)(Hbipa)]·H 2 O} n (1), {[Cd 3 (dimb) 3 (bipa) 2 (H 2 O) 2 ·2H 2 O} n (2) , [Cd(bimd)(Hbipa)(H 2 O)] n (3) , {[Zn(bipd)(Hbipa)]·H 2 O} n (4) and [Zn(bimb)(Hbipa)] n (5) had been synthesized and characterized. Worth noting, Complex 1 and 2 had effective separation behaviors towards MO and MBE dyes respectively, which could reach the adsorption equilibrium within a quite short time even if there existed another kind of dye in the system. Meanwhile, Complex 3 – 5 showed great performance in CR adsorption. Additionally, Complex 3 – 5 also showed excellent photocatalytic degradation capabilities toward MB and MV dyes under UV irradiation. According to the study, these five metal-organic frameworks can be used as a kind of functional materials in the adsorption and photocatalytic degradation of organic dyes in wastewater. [Display omitted] • Produce novel Cd/Zn -based MOFs that possess novel 3D structure. • Selectively absorb specific aromatic dyes in a mixed aqueous system. • Exhibit efficient photocatalytic degradation abilities towards MB/MV in aqueous solution. [ABSTRACT FROM AUTHOR]

A novel 3D Co-MOF based on the semi-rigid 3,5-bis(3,5-dicarboxylphenoxy)benzoic acid ligand have been successively synthesized. YMUN 9-D collected from programmed heat treatment of YMUN 9 displays excellent OER electrochemical activity. [Display omitted] Cobalt metal organic frameworks (Co-MOFs), as promising potential electrocatalyst materials, have been extensively investigated owing to high catalytic active center, uniform catalytic site, large specific surface area, adjustable pore. A new Co-MOF, namely, {[Co 2 (L)(4,4′-bbibp) 2 ]·4(H 2 O)} n [ YMUN 9 (YMUN for Youjiang Medical University for Nationalities)], has been synthesized based on semi-rigid dicarboxylic acid and rigid imidazole ligands (H 2 L = 3,5-bis(3,5-dicarboxylphenoxy)benzoic acid, 4,4′-bbibp = 4,4′-bis(benzimidazol-1-yl)biphenyl). YMUN 9 displays a 3D framework through by means of single-crystal X-ray diffraction (SC-XRD). In order to present the structure more clearly, YMUN 9 can be defined as a 3D 2-nodal (4,4)-connected network with the point symbol of {4·85}2{42·104} through topology analysis. YMUN 9-D has been obtained based on YMUN 9 through a new strategy that of programmed heat treatment of YMUN 9. The oxygen evolution reaction (OER) electrochemical activity of YMUN 9-D has been investigated through cyclic voltammetry (CV), linear scanning voltammetry (LSV), chronopotentiometry (CP), and electrochemical impedance spectroscopy (EIS), in 0.1 M KOH electrolyte. The investigated results revealing that YMUN 9-D has a prominent overpotential of 273.9 mV (at J = 10 mA·cm−2), and keeps great chemical stability until 1000 mins. The Tafel slope of YMUN 9-D is 141.9 mV·dec−1 and its double layer capacitance is found to be 32 mF·cm−2. Compared to other MOFs materials, YMUN 9-D displays similar or superior electrocatalytic performance. [ABSTRACT FROM AUTHOR]

[Display omitted] • Produce two novel Zn-based MOFs under solvothermal conditions. • Both of Zn-based MOFs possess analogous layered stacked structure. • Selectively absorb specific aromatic dyes in a mixed aqueous system. • Exhibit efficient photocatalytic degradation abilities towards MB/MV in aqueous solution. Two novel Zn-MOFs constructed from 5-hydroxy-2-nitroisophthalic acid (H 2 DIPA) and 5-(4-carboxy-2-nitrophenoxy)-2-nitroisophthalic acid (H 3 BPPA), namely: {[Zn 2 (DIPA) 2 (bimp) 5 ]·DMF·2H 2 O} n (Zn-MOF 1), {[Zn 2 (HBPPA) 2 (bibp) 2 ]·2H 2 O} n (Zn-MOF 2) (bimp = 1,4-di(1H-imidazol-1-yl)butane, bibp = 4,4′-bis(imidazolyl) biphenyl), have been synthesized under solvothermal conditions and characterized by single crystal X-ray diffraction, elemental analysis, IR spectra, powder X-ray diffraction (PXRD) and thermogravimetric analysis (TG). The single-crystal X-ray diffraction analysis indicates that Zn-MOF 1 exhibits an uncommon 3-nodal framework with a (4·6·8)(4·63·82)(66) topology, whereas Zn-MOF 1 exhibits an uninodal 4-connected framework with a (44·62) topology. Moreover, both of the two Zn-MOFs exhibit exceptional dye adsorption capacities towards the organic dyes with high adsorption rates and excellent adsorption amounts. Particularly, Zn-MOF 1 can selectively adsorb the cationic dye malachite green (MG) whereas Zn-MOF 2 adsorb the anionic dye methyl orange (MO) when there exists another kind of dye in the system. The adsorption process can be illustrated by pseudo-second order kinetic and Langmuir isotherm, and the feasible adsorption mechanism could be the electrostatical interactions, hydrogen bonding between the MOFs and the dyes. Meanwhile, the two Zn-MOFs also show good photocatalytic degradation capabilities toward MB/MV dyes under UV irradiation, and the mechanism studies demonstrate that the main active species are ·OH radicals. Therefore, this functional MOF materials can be treated as a convenient and cost-efficient solution for the sewage handling and environmental protection. [ABSTRACT FROM AUTHOR]

Three new Zn metal organic frameworks (Zn-MOFs), {[Zn 2 (L)[H (1,4-bmib)]]·1.5(H 2 O)} n (1), {[Zn 2 (HL) (3,5-bip) 2 ]·(H 2 O)} n (2), and {[Zn 2 (HL) (4,4′-bbibp) 2 ]·4(H 2 O)} n (3), have been first synthesized based on a flexible H 5 L ligand with ether functional group (C–O–C) and successfully characterized (semi-flexible H 5 L ​= ​3,5-bis(3,5-dicarboxylphenoxy)benzoic acid, flexible 1,4-bmib ​= ​1,4-bis(2-methylimidazol-1-yl)butane, rigid 3,5-bip ​= ​3,5-bis(1-imidazolyl)pyridine, and rigid 4,4′-bbibp ​= ​4,4′-bis(benzoimidazo-1-ly)biphenyl). Zn-MOFs 1 – 3 are unique topological networks. As multi-responsive fluorescent sensing materials of 1 and 3 , they show excellent response and sensitivity for Fe3+, CrO 4 2− and Cr 2 O 7 2−, and tetracycline (TC) in aqueous system. The quenching mechanism is also investigated in detail. Three novel topological Zn metal organic frameworks, namely, {[Zn 2 (L)[H (1,4-bmib)]]·1.5(H 2 O)} n (1), {[Zn 2 (HL) (3,5-bip) 2 ]·(H 2 O)} n (2), and {[Zn 2 (HL) (4,4′-bbibp) 2 ]·4(H 2 O)} n (3) have been successfully synthesized and characterized. Zn-MOFs 1 and 3 afford selectivity and excellent sensitivity towards Fe3+, Cr 2 O 7 2−, CrO 4 2−, and TC in aqueous system. [Display omitted] • Three novel topological Zn metal organic frameworks have been successfully synthesized and characterized. • Zn-MOFs 1 – 3 are unique topological networks. • Zn-MOFs 1 and 3 show excellent response and sensitivity for Fe3+, CrO 4 2− and Cr 2 O 7 2−, and TC in aqueous system. [ABSTRACT FROM AUTHOR]

[Display omitted] • Produce novel Co-based MOFs that possess analogous layered stacked structure. • Require only 1.2 V@2.93 mA cm−2 and 1.5 V@2.78 mA cm−2 for full water splitting. • Exhibit efficient photocatalytic degradation abilities towards MB/MV in aqueous solution. Two novel Co-MOFs constructed from aromatic polycarboxylic acid named {[Co(tib) 2 (bimb) 2 ]·4H 2 O} n (tib = 3-((4-(1H-1,2,4-triazol-1-yl)benzyl)oxy)benzoic acid, bimb = 1,4-bis(imidazole-1-ylmethy) benzene) and {[Co 2 (bipa) 4 (bibp) 6 ]} n (bipa = 2-(4-carboxy-2-nitrophenoxy)-6-nitroterephthalic acid, bibp = 4,4′-bis(imidazolyl) biphenyl), have been synthesized under solvothermal conditions and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectra, powder X-ray diffraction (PXRD), thermogravimetric analysis (TG) as well as electrochemistry. The single-crystal X-ray diffraction analysis indicates that Co-MOF 1 exhibits an uninodal net with a (65·8) topology, whereas Co-MOF 2 exhibits an uninodal 4-connected framework with a (44·62) topology. The electrochemistry studies demonstrate that both of the two Co-MOFs can behave as the efficient electrocatalysts for water oxidation in a mild neutral system at the potential around 1.20 V vs. NHE with comparatively low overpotential (η) for Co-MOF 1 and 2 of 337–541 mV vs. NHE. Moreover, the two Co-MOFs also show good photocatalytic degradation capabilities toward MB/MV dyes under UV irradiation, and the mechanism studies demonstrate that the main active species are · OH radicals. Therefore, these bi-functional Co-MOFs materials can be treated as convenient and efficient catalysts for the oxygen evolution reaction and aromatic dyes degradation. [ABSTRACT FROM AUTHOR]

• A stable 3D Cd-MOF based on π-electron rich ligands was successfully synthesized and characterized. • The Cd-MOF can not only sensitively detect CHL through luminescence quenching, but also exhibit good adsorption capability toward CHL in aqueous solution. • The good adsorption capability makes the antibiotic contact with the framework more sufficiently which enhances the sensing efficiency. An efficiently selective sensor for aquatic antibiotic detection based on a photoluminescent cadmium metal–organic framework (Cd-MOF) is researched in this work. The novel and simple luminescent MOF that composed from a π-electron rich ligand bip (3,5-bis(1-imidazol) pyridine) and H 3 L (2-nitro-5-(4-carboxy-2-nitrophenoxy) isophthalic) was synthesized in hydrothermal condition and characterized. Single crystal X-ray diffraction analysis demonstrated that it had an uncommon 2-nodal (3,6)-connected 3D framework with a (32·4)(34·46·53·62) topology, which could be formulated as [{[Cd 2 (HL) 2 (bip) 2 ·H 2 O} n. Benefiting from its unique framework, [{[Cd 2 (HL) 2 (bip) 2 ·H 2 O} n can not only respond to the trace quantity of chloramphenicol (CHL) via fluorescence quenching but also show good adsorption capability toward CHL in aqueous solution. The selective response to CHL reached up to the ppb level with high anti-interference ability in aqueous phase, and the effective detection of antibiotics had been theorized by Density Functional Theory (DFT) calculation for energy bands of H 3 L and antibiotics, which revealed that the cooperation influence on photo-induced electron transfer (PET) process and fluorescence inner filter effect (IFE) made CHL show more sensitive luminescence responses than other experimental antibiotics. Moreover, because of its specific interactions with analytes and relatively high porosity, the pre-enrichment makes the antibiotic fuller contact and interact with the framework, which improves the overall sensing efficiency towards CHL appreciably. Stemming from the abuse, antibiotics have been considered as the great threat to the health of human race and the sustainable development of society. Therefore, it is extremely important to achieve new technology to detect and absorb antibiotics residues in water. This work proves that metal–organic framework complexes can conform the performance of detecting and removing antibiotic in aqueous environment, that emphasizes the application of luminescent MOFs in contaminant monitoring and removing. [ABSTRACT FROM AUTHOR]