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Control of photochemistry of stilbazolium ion by adsorption to poly(potassium vinylsulfate) and to hectorite clay
Author(s) -
Nakahira Takayuki,
Hama Masayuki,
Fukuchi Osamu,
Okamura Toshiya,
Iwabuchi Susumu,
Shimazu Shogo,
Uematsu Takayoshi,
Kikuchi Hideo
Publication year - 1995
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.1995.030161003
Subject(s) - hectorite , adsorption , photoisomerization , intercalation (chemistry) , potassium , pyridinium , chemistry , ion , inorganic chemistry , photochemistry , materials science , clay minerals , organic chemistry , isomerization , catalysis , mineralogy
Abstract Adsorption or intercalation of trans ‐1‐methyl‐4‐(2‐phenylvinyl)pyridinium ion (stilbazolium ion, SB ( 1 )) to a polyelectrolyte, i. e., poly(potassium vinylsulfate) (PVSK), and to a hectorite clay is studied and its effect on the photochemistry of SB examined. trans‐cis Photoisomerization of SB molecularly adsorbed to PVSK proceeds efficiently as with free SB in water, while that of SB molecularly intercalated in the clay is markedly suppressed. Photodimerization proceeds efficiently with SB intercalated in the clay in the aggregated form. Overall photodecoloration, however, proceeds more efficiently with SB adsorbed to PVSK under multiple adsorption conditions apparently due to the higher mobility of PVSK‐adsorbed SB compared to that of clay‐intercalated SB.