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

Yen-Ju Cheng, Tien Yau Luh*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

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.

Original languageEnglish
Pages (from-to)5361-5368
Number of pages8
JournalChemistry - A European Journal
Volume10
Issue number21
DOIs
StatePublished - 25 Oct 2004

Keywords

  • Chromophores
  • Energy transfer
  • Hydrosilylation
  • Inorganic polymers
  • Light harvesting

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