Photoinduced electronic energy transfer in modular, conjugated, dinuclear Ru(II)/Os(II) complexes

被引：90

作者：

Welter, S

Salluce, N

Belser, P

Groeneveld, M

De Cola, L

机构：

[1] Univ Amsterdam, HIMS, NL-1018 WV Amsterdam, Netherlands

[2] Univ Fribourg, Dept Chem, CH-1700 Fribourg, Switzerland

来源：

COORDINATION CHEMISTRY REVIEWS | 2005年 / 249卷 / 13-14期

关键词：

dinucler metal complex; energy transfer; ruthenium complexes; osmium complexes; para-phenylene; luminescence;

D O I：

10.1016/j.ccr.2004.11.008

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Rigid, modular heterometallic dinuclear complexes containing luminescent units have been synthesized and their photophysical properties investigated. The metal complexes are derivatives, of ruthenium and osmium trisbipyridine compounds and are linked by 2, 3, 4 or 5 para-phenylene units. A fast and efficient photoinduced energy transfer takes place from the excited ruthenium moiety to the osmium-based component. The rate constants of the energy transfer processes have been determined by time-resolved emission and sub-picosecond transient absorption spectroscopy. A comparison with similar systems containing substituted polyphenylene units is made in order to clarify the role of the tilt angle between the spacers on the energy transfer rates. Such investigation confirmed that a through bond Dexter type mechanism is responsible for the process. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1360 / 1371

页数：12

共 69 条

[1] Synthesis and properties of an efficient and switchable photosensitizing unit, [Ru(4,4′-diphenyl-2,2′-bipyridine)2-(7-amino-dipyrido[3,2-a:2′,3′-c] phenazine)]2+, for a photo-induced energy transfer system [J].