A trimetallic mixed Ru(II)/Fe(II) terpyridyl complex with a long-lived excited state in solution at room temperature

被引：79

作者：

Baitalik, S ^{[1
]}

Wang, XY ^{[1
]}

Schmehl, RH ^{[1
]}

机构：

[1] Tulane Univ, Dept Chem, New Orleans, LA 70118 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 50期

关键词：

D O I：

10.1021/ja044561s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The photophysical behavior of a series of mono- and trimetallic Ru(II) and mixed Ru(II)/Fe(II) bis-terpyridyl complexes was examined. The complexes have bridging terpyridyl ligands linked by phenylene-vinylene substituents on the terpyridyl. For the complexes bridged by a single phenylene-vinylene, the lowest-energy excited state is metal-to-ligand charge transfer (MLCT), and excited-state decay is on the 1-10 ns time scale. The complexes with two phenylene-vinylene groups have thermally equilibrated excited states that are localized on the phenylene-vinylene bridge and have much longer lifetimes (>200 ns). Remarkably, the trimetallic complex having an Fe(II) terpyridyl center also has a long-lived excited state, despite the fact that low-energy iron-localized excited states exist on the complex. Copyright © 2004 American Chemical Society.

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页码：16304 / 16305

页数：2

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