Synthesis and efficient energy transfer in a three-chromophore energy gradient of regioregular silylene-spaced divinylarene copolymers
Resource
Macromolecules 38 (11): 4563-4568
Journal
Macromolecules
Journal Volume
38
Journal Issue
11
Pages
4563-4568
Date Issued
2005
Author(s)
Cheng, Y.-J.
Abstract
Regioregular silylene-spaced copolymers 1 composed of an energy gradient with three different chromophores have been achieved by rhodium-catalyzed hydrosilylation of bis-vinylsilanes 3 and bis-alkynes 4. Monomeric reference compounds 2 were prepared for comparison. The ratio of three chromophores is 1:2:1, corresponding to D1, D2, and A chromophores, respectively. The dimethylsilylene (SiMe2) moiety serves as an insulating bridge between chromophores. Upon excitation of the donor chromophore (D1), only emission from the acceptor (A) was observed. Efficient and sequential energy transfer across three different chromophores along the polymeric backbone may proceed smoothly in these silylene-spaced copolymers.
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Type
journal article
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