New pyridinium based ionic dyes for the hydrogen evolution reaction

被引：22

作者：

Konieczna, Dagny D. ^{[1
]}

Biller, Harry ^{[1
]}

Witte, Matthias ^{[2
]}

Schmidt, Wolf Gero ^{[2
]}

Neuba, Adam ^{[3
]}

Wilhelm, Rene ^{[1
]}

机构：

[1] Univ Paderborn, Dept Chem, Organ Chem, D-33098 Paderborn, Germany

[2] Univ Paderborn, Dept Phys, D-33098 Paderborn, Germany

[3] Univ Paderborn, Inorgan Chem, Dept Chem, D-33098 Paderborn, Germany

来源：

TETRAHEDRON | 2018年 / 74卷 / 01期

关键词：

Organic dyes; Organic salts; Heterocycles; Cobaloxime; Titanium dioxide; Water reduction; PHOTOINDUCED ELECTRON-TRANSFER; D-PI-A; ORGANIC-DYES; ELECTROCHEMICAL PROPERTIES; HOMOGENEOUS SYSTEM; METAL-COMPLEXES; ENERGY-LEVELS; COBALT; COBALOXIME; SENSITIZERS;

D O I：

10.1016/j.tet.2017.11.053

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The presented work comprised the synthesis and characterization of new ionic organic dyes as potential photosensitizer (PS) in the photocatalytic H-2 evolution reaction. The presented dyes are consisting of donor-pi-acceptor (D-pi-A) structures that are commonly used for organic dyes for organic solar cells. The acceptor is based on a cationic pyridinium moiety. Furthermore, a complex was synthesized, in which a photosensitizer is linked as ligand to cobaloxime. The latter is a common proton reduction catalyst. The attached ligand enabled a fast intramolecular electron transfer to the cobalt center. The resulted complex showed high stability and potential in the homogeneous photocatalytic H-2 evolution reaction. Finally, one ionic dye showed a high activity when combined with TiO2 and Pt in a heterogeneous hydrogen evolution reactions with a TOF of up to 407 h(-1). (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：142 / 149

页数：8

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