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Preparation of viologen polymers with carbon chain spacers and their application to the electron-transfer reaction in heterophases

✍ Scribed by Lijun Liang; Futian Liu; Sicheng Zhu; Zhichen Zou; Binglin He

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 119 KB
Volume: 10
Category: Article
ISSN: 1042-7147
DOI: 10.1002/(sici)1099-1581(199901/02)10:1/2<60::aid-pat767>3.0.co;2-r

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✦ Synopsis

Viologen polymers (PV 2 ) with carbon chain spacers were prepared by the polymeric reaction with poly(4vinyl pyridine). These polymers were used as an electrontransfer catalyst (ETC) for the reduction of azobenzene, either in a Zn±PV 2 system (reductant: Zn, in CH 3 CN/ H 2 O) or in a Na 2 S 2 O 4 ±PV 2 system (reductant: Na 2 S 2 O 4 , in CH 2 Cl 2 /H 2 O). It was found that viologen polymers had the ability to mediate the reduction of azobenzene and the length of spacers linking viologen groups to polymeric chains also affected the electrontransfer catalytic reactions.

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