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

Chemistry : a European Journal
Yen-Ju Cheng, Tien-Yau Luh

Abstract

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.

References

Sep 26, 2002·Chemical Communications : Chem Comm·Yen-Jun ChengTien-Yau Luh
Apr 23, 2004·Organic Letters·Lian-Ming YangTien-Yau Luh
Nov 16, 1998·Angewandte Chemie·Aiko NakanoYoshinobu Nishimura

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Citations

Jun 26, 2008·Chemistry, an Asian Journal·Mei-Yu Yeh, Tien-Yau Luh
Jun 4, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Tien-Yau Luh, Ziqiang Hu
Nov 17, 2006·Chemical Communications : Chem Comm·Tien-Yau Luh, Yen-Ju Cheng
Oct 18, 2012·Chemistry : a European Journal·Suman K Samanta, Santanu Bhattacharya
Nov 5, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Xinchun YangYingying Zhao
Jul 21, 2006·The Journal of Physical Chemistry. B·Chih-Hsien ChenTien-Yau Luh
Aug 15, 2009·Chemical Reviews·Jianzhao LiuBen Zhong Tang

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