PHOTOREDUCTION OF ALKYL VIOLOGENS AND POLYVlOLOGENS IN 2-PROPANOL AQUEOUS SOLUTION

LIANG Zhaoxi; LI Wen; LI Manfu

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PHOTOREDUCTION OF ALKYL VIOLOGENS AND POLYVlOLOGENS IN 2-PROPANOL AQUEOUS SOLUTION

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- PHOTOREDUCTION OF ALKYL VIOLOGENS AND POLYVlOLOGENS IN 2-PROPANOL AQUEOUS SOLUTION
- Vol. 5, Issue 3, Pages: 254-260(1987)
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- Published：20 September 1987
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LIANG Zhaoxi, LI Wen, LI Manfu. PHOTOREDUCTION OF ALKYL VIOLOGENS AND POLYVlOLOGENS IN 2-PROPANOL AQUEOUS SOLUTION[J]. 1987, 5(3): 254-260.
DOI：

LIANG Zhaoxi, LI Wen, LI Manfu. PHOTOREDUCTION OF ALKYL VIOLOGENS AND POLYVlOLOGENS IN 2-PROPANOL AQUEOUS SOLUTION[J]. 1987, 5(3): 254-260. DOI：

摘要

In order to study the effect ofalkyl chain length and the polymer effect on the photoreduction behavior of some viologens

a series of alkyl viologen

polyviologen and bisviologen compounds have been synthesized. In the presence of excess 2-propanol

the initial photoreduction of alkyl viologens and polyviologens follow the peudo--seeond--order reaction

the calculated rate constants are related to the alkyl chain length: In addition

the intramoleeular association of radical cations of polyviologens has been found even in dilute solution.Hoowever the extent of association is varied with the alkyl chain length.The observed polymer effect of polyviologens in the photoreduction is significant which can be explained in terms of the mature of second order reaction.

Abstract

In order to study the effect ofalkyl chain length and the polymer effect on the photoreduction behavior of some viologens

a series of alkyl viologen

polyviologen and bisviologen compounds have been synthesized. In the presence of excess 2-propanol

the initial photoreduction of alkyl viologens and polyviologens follow the peudo--seeond--order reaction

the calculated rate constants are related to the alkyl chain length: In addition

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