Supramolecular assemblies of Cu(ii) with a tetraphenylethene-imidazole ligand for tuning photocatalytic CO₂ reduction

Zhao-Feng Qiu,Peng Wang,Xiao-Yu Zhang,Jia-Qi Chen, Kai-Yang Zhang,Xiang-Yu Lu,Yue Zhao,Wei-Yin Sun

CHEMICAL COMMUNICATIONS（2024）

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摘要

Cu(II) supramolecular assemblies [Cu-2(tipe)(2)(H2O)(2)](NO3)(4)2.5H(2)O (CuN4) and [Cu2Cl4(tipe)(CH3CN)]H2O (CuN2Cl2) (tipe = 1,1,2,2-tetrakis(4-(imidazole-1-yl)phenyl)ethene) were synthesized and utilized for photocatalytic CO2 reduction. CuN4 exhibits CO production of up to 891 mu mol g(cat)(-1) with a selectivity of 79.9%, while CuN2Cl2 gives low CO production of 206 mu mol g(cat)(-1) but with a high selectivity of >99.9% in 5 h. The experimental and DFT calculation results indicate that the coordination environment and non-covalent interactions within the assemblies have a great impact on the photocatalytic CO2 reduction behavior. This work provides useful insights on Cu(II) assembly catalyzed CO2 photoreduction.

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Supramolecular assemblies of Cu(ii) with a tetraphenylethene-imidazole ligand for tuning photocatalytic CO2 reduction

Supramolecular assemblies of Cu(ii) with a tetraphenylethene-imidazole ligand for tuning photocatalytic CO₂ reduction