Rotaxanes and other transition metal-assembled porphyrin arrays for long-range photoinduced charge separation

被引:54
作者
Chambron, JC [1 ]
Collin, JP [1 ]
Dalbavie, JO [1 ]
Dietrich-Buchecker, CO [1 ]
Heitz, V [1 ]
Odobel, F [1 ]
Solladié, N [1 ]
Sauvage, JP [1 ]
机构
[1] Univ Strasbourg 1, Lab Chim Organominerale, F-67000 Strasbourg, France
关键词
porphyrins; rotaxanes; non covalent assemblies; photochemistry; electron transfer; charge separation;
D O I
10.1016/S0010-8545(98)00153-2
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Bis-porphyrin conjugates have been synthesized for performing long-range photoinduced charge separation. The electron donor is a zinc(II) porphyrin in the excited state and the electron acceptor is a gold(III) porphyrin. These elements or their free-base analogs have been assembled following two different strategies. In a first approach, the porphyrinic subunits, separated by one or more 2,9-diphenyl-1,10-phenanthroline spacers, have been incorporated into rotaxane structures containing up to four threaded macrocycles by copper(I) templated synthesis. In a second approach, a triad having strictly controlled geometry has been prepared following a new gathering strategy. This triad, consisting of two porphyrinic moieties assembled via a central bis(phenyl-terpyridine) ruthenium(II) complex, uses coordination rather than covalent chemistry to interconnect the components. (C) 1998 Elsevier Science S.A. All rights reserved.
引用
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页码:1299 / 1312
页数:14
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