Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210-1340, USA.
Chem Commun (Camb). 2018 Jul 24;54(60):8332-8334. doi: 10.1039/c8cc03631d.
Photocatalytic proton reduction to generate H2 was achieved with the photosensitizers Rh2(DTolF)2(npCOO)2 (DTolF = p-ditolylformamidinate; npCOO- = 2-carboxylate-1,8-naphthyridine; 1) and [Rh2(DTolF)2(qnnp)2][BF4]2 (qnnp = 2-(quinolin-2-yl)-1,8-naphthyridine; 2) using a relay system containing the sacrificial donor BNAH (1-benzyl-1,4-dihydronicotinamide), electron acceptor MV2+ (methylviologen), and Pt nanoparticles as the catalyst with 655 nm irradiation. Comparison of the H2 evolution under similar experimental conditions show comparable activity of the Rh2(ii,ii) complexes (λirr = 655 nm) to that of the prototypical [Ru(bpy)3]2+ (bpy = 2,2'-bipyridine; 3) with λirr = 447 nm. This work demonstrates the ability of the new panchromatic Rh2(ii,ii) complexes to achieve photocatalysis with red light.
使用光敏剂 Rh2(DTolF)2(npCOO)2（DTolF = p-二邻甲苯甲酰基甲脒；npCOO- = 2-羧基-1,8-萘啶；1）和 [Rh2(DTolF)2(qnnp)2][BF4]2（qnnp = 2-（喹啉-2-基）-1,8-萘啶；2），通过包含牺牲供体 BNAH（1-苄基-1,4-二氢烟酰胺）、电子受体 MV2+（甲紫精）和 Pt 纳米粒子作为催化剂的接力系统，实现了光催化质子还原生成 H2，并用 655nm 光照射。在类似的实验条件下对 H2 演化进行比较，结果表明 Rh2(ii,ii)配合物（λirr = 655nm）的活性与典型的 [Ru(bpy)3]2+（bpy = 2,2'-联吡啶；3）相当，λirr = 447nm。这项工作证明了新型全色 Rh2(ii,ii)配合物在红光下实现光催化的能力。
