Shorter Alkyl Chains Enhance Molecular Diffusion and Electron Transfer Kinetics between Photosensitisers and Catalysts in CO
<sub>2</sub>
‐Reducing Photocatalytic Liposomes
作者:David M. Klein、Santiago Rodríguez‐Jiménez、Marlene E. Hoefnagel、Andrea Pannwitz、Amrutha Prabhakaran、Maxime A. Siegler、Tia E. Keyes、Erwin Reisner、Albert M. Brouwer、Sylvestre Bonnet
DOI:10.1002/chem.202102989
日期:2021.12.6
functionalisation with alkyl tails is a common method for supporting molecular catalysts and photosensitisers onto lipid bilayers, but the influence of the alkyl chain length on the photocatalytic performances of the resulting liposomes is not well understood. In this work, we first prepared a series of rhenium-based CO2 -reduction catalysts [Re(4,4'-(Cn H2n+1 )2 -bpy)(CO)3 Cl] (ReCn ; 4,4'-(Cn H2n+1 )2 -bpy=4
烷基尾共价官能化是将分子催化剂和光敏剂负载到脂质双层上的常用方法,但烷基链长度对所得脂质体光催化性能的影响尚不清楚。在这项工作中,我们首先制备了一系列铼基 CO2 还原催化剂 [Re(4,4'-(Cn H2n+1 )2 -bpy)(CO)3 Cl] (ReCn ; 4,4'-( Cn H2n+1 )2 -bpy=4,4'-二烷基-2,2'-联吡啶) 和钌基光敏剂 [Ru(bpy)2 (4,4'-(Cn H2n+1 )2 -bpy) ](PF6 )2 (RuCn ) 具有不同的烷基链长度(n=0、9、12、15、17 和 19)。然后,我们制备了一系列含有 RuCn 和 ReCn(以下称为 Cn)的 PEG 化 DPPC 脂质体,以在抗坏血酸钠存在下进行光催化 CO2 还原。发现 Cn 脂质体的光催化性能取决于烷基尾长,因为 CO (TON) 的转换数与烷基链长度成反比,CO 产量 (TON