Isolating substituent effects in Re(I)-phenanthroline electrocatalysts for CO2 reduction
作者:Sarah A. Roell、Briana R. Schrage、Christopher J. Ziegler、Travis A. White
DOI:10.1016/j.ica.2019.119397
日期:2020.4
molecular electrocatalysts for reducing CO2 to value-added products requires an intimate knowledge of the structural and electronic features surrounding the active site. We previously illustrated how electronic modifications to fac-[ReI(R2phen)(CO)3Cl] electrocatalysts (R2phen = 2,9-disubstituted-1,10-phenanthrolines) strongly dictate CO2 reduction; more specifically, introducing methoxy substituents at both
摘要开发用于将CO2还原为增值产品的高活性分子电催化剂,需要对活性位点周围的结构和电子特征有深入的了解。前面我们已经说明了对fac- [ReI(R2phen)(CO)3Cl]电催化剂的电子修饰(R2phen = 2,9-二取代-1,10-菲咯啉)强烈决定了CO2的还原。更具体地说,在与菲咯啉连接的苯环的邻位/对位的两个位置引入甲氧基取代基产生高催化活性。在当前的工作中,我们准备了四种与结构相关的Re(I)电催化剂,以隔离与每个甲氧基在苯环周围的位置(即,无,邻,间或对位)相关的电子效应。二亚胺配体2,9-二苯基-1,10-菲咯啉(Ph2phen),2,9-bis(2,6-二甲氧基苯基)-1,10-菲咯啉((2,6-dmp)2phen),2,9-双(3,5-二甲氧基苯基)-1,10-菲咯啉((3,5-dmp)2phen),制备2,9-双(4-甲氧基苯基)-1,10-菲咯啉((4-mp)2ph