Photoinduced electron transfer in silylene-spaced copolymers having alternating donor-acceptor chromophores

Hsian Wen Wang, Yen-Ju Cheng, Chih Hsien Chen, Tsong Shin Lim, Wunshain Fann, Cheng Lan Lin, Yuan Pin Chang, Kin Chuan Lin, Tien Yau Luh*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


Silylene-spaced copolymers with alternating azacrown and anthracene moieties were synthesized for photoinduced electron transfer investigations. These polymers exhibited efficient intrachain photoinduced electron transfer with charge separation yield about 0.96-0.99 and corresponding charge-transfer rates around 10.8-32.2 ns-1 in different solvents. Metal cations have been shown to enhance the fluorescence intensity due to complexation. These results are comparable to those of small molecules having similar chromophores. The geminal dimethyl substituents on silicon in these copolymers may direct the relative conformation (or distance) of the remaining substituents on silicon. Intrachain interactions between these chromophores may readily take place leading to highly efficient electron transfer processes.

Original languageEnglish
Pages (from-to)2666-2671
Number of pages6
Issue number8
StatePublished - 17 Apr 2007


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