화학공학소재연구정보센터
Journal of Catalysis, Vol.363, 191-196, 2018
An electron-reservoir Re(I) complex for enhanced efficiency for reduction of CO2 to CO
Herein we report a highly efficient molecular catalyst of novel Re(I) complex (ReTPS) containing 4,4'-bis (4-(triphenylsilyl)phenyl)-2,2'-bipyridine as a specific ligand. Photophysical studies and density functional theory (DFT) as well as time-dependent DFT (TDDFT) calculations show efficient expansion of ic-system by the arylsilyl units, with a minimal electronic effect on the parent Re(I) complex. Electrochemical studies reveal an electron-reservoir characteristic of ReTPS by storing two electrons in the ligand before the Re(I) center is reduced. Faradaic efficiency of 76% and turnover number of 130 were recorded for electrocatalytic and photocatalytic reduction of CO2, respectively. (C) 2018 Elsevier Inc. All rights reserved.