Electropolymerisable bipyridine ruthenium(II) complexes:: synthesis, spectroscopic and electrochemical characterisation of 4-((2-thienyl) ethenyl)- and 4,4′-di((2-thienyl) ethenyl)-2,2′-bipyridine ruthenium complexes

被引：16

作者：

Aranyos, V

Hagfeldt, A

Grennberg, H

Figgemeier, E

机构：

[1] Uppsala Univ, Dept Phys Chem, S-75123 Uppsala, Sweden

[2] Uppsala Univ, Dept Organ Chem, S-75124 Uppsala, Sweden

来源：

POLYHEDRON | 2004年 / 23卷 / 04期

关键词：

electropolymerisation; Ru-complexes; thiophene; differential pulse voltarnmetry; 4-((2-thienyl)-ethenyl)-2,2 '-bipyridine; redox-polymers;

D O I：

10.1016/j.poly.2003.10.004

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Four new ruthenium polypyridyl complexes with mono- or di-((2-thienyl) ethenyl) substituted bipyridines have been synthesized. The complexes were characterized by NMR, elemental analysis, UV-Vis absorption and electrochemistry (differential pulse and cyclic voltammetry). Electroactive polymer films of these complexes have been prepared by oxidative electropolymerisation and characterized by UV-Vis absorption spectroscopy and electrochemistry. The electrochemically induced polymerisation of the complexes resulted in a significant shift of the oxidation potential of the Ru(II)-Ru(III) process towards more positive potentials. Also, MLCT absorption band of the polymeric complexes is shifted towards shorter wavelengths. These results are interpreted in terms of an interruption of the conjugated system of the (2-thienyl)ethenyl-substituted bipyridine ligands due to a radical polymerisation mechanism affecting rather the ethenyl part of the ligand than the thienyl. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：589 / 598

页数：10

共 28 条

[1] Electropolymerisable bipyridine ruthenium(II) complexes.: Synthesis and electrochemical characterisation of 4-(3-methoxystyryl)- and 4,4′-di(3-methoxystyryl)-2,2′-bipyridine ruthenium complexes [J].