Synthesis, light-harvesting and energy-transfer properties of regioregular silylene-spaced alternating [(donor-SiMe2-)n=1-3-(acceptor-SiMe2)] copolymers

被引：45

作者：

Cheng, YJ

Luh, TY ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Chem, Taipei 10764, Taiwan

[2] Natl Taiwan Univ, Inst Polymer Sci & Engn, Taipei 10764, Taiwan

[3] Acad Sinica, Inst Chem, Taipei 115, Taiwan

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2004年 / 10卷 / 21期

关键词：

chromophores; energy transfer; hydrosilylation; inorganic polymers; light harvesting;

D O I：

10.1002/chem.200400472

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of silylene-spaced alternating [(donor-SiMe2)(n) (= 1-3)-(acceptor-SiMe2)] copolymers 4-6 was synthesized by rhodium-catalyzed hydrosilylation of bisalkynes with bissilyl hydrides. Monomeric reference compounds 7-10 with similar chromophore components were prepared for comparison. The ratio of donor to acceptor groups is well-controlled by the precise regiochemistry and nature of the repeat units. The silylene moieties serve as insulating spacers between chromophores. The polymers exhibit light-harvesting abilities, for which the intensity of the emission enhanced with larger donor-to-acceptor ratios. No emission originating from the donors was observed in fluorescence spectra, illustrating that intrachain energy transfer is highly efficient along the polymer chain.

引用

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页码：5361 / 5368

页数：8

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