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

doi:10.1021/ma070119t

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

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

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 language	English
Pages (from-to)	2666-2671
Number of pages	6
Journal	Macromolecules
Volume	40
Issue number	8
DOIs	https://doi.org/10.1021/ma070119t
State	Published - 17 Apr 2007

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title = "Photoinduced electron transfer in silylene-spaced copolymers having alternating donor-acceptor chromophores",

abstract = "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.",

author = "Wang, {Hsian Wen} and Yen-Ju Cheng and Chen, {Chih Hsien} and Lim, {Tsong Shin} and Wunshain Fann and Lin, {Cheng Lan} and Chang, {Yuan Pin} and Lin, {Kin Chuan} and Luh, {Tien Yau}",

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doi = "10.1021/ma070119t",

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T1 - Photoinduced electron transfer in silylene-spaced copolymers having alternating donor-acceptor chromophores

AU - Wang, Hsian Wen

AU - Cheng, Yen-Ju

AU - Chen, Chih Hsien

AU - Lim, Tsong Shin

AU - Fann, Wunshain

AU - Lin, Cheng Lan

AU - Chang, Yuan Pin

AU - Lin, Kin Chuan

AU - Luh, Tien Yau

PY - 2007/4/17

Y1 - 2007/4/17

N2 - 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.

AB - 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.

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U2 - 10.1021/ma070119t

DO - 10.1021/ma070119t

M3 - Article

AN - SCOPUS:34247635533

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VL - 40

SP - 2666

EP - 2671

JO - Macromolecules

JF - Macromolecules

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ER -

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

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