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Insulation effect of an inclusion complex formed by polyaniline and β‐cyclodextrin in solution
Author(s) -
Shimomura Takeshi,
Yoshida Kenichi,
Ito Kohzo,
Hayakawa Reinosuke
Publication year - 2000
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/1099-1581(200008/12)11:8/12<837::aid-pat61>3.0.co;2-b
Subject(s) - polyaniline , cyclodextrin , materials science , iodine , polymer chemistry , polymer , inclusion (mineral) , polyaniline nanofibers , molecule , conductive polymer , chemical engineering , organic chemistry , chemistry , composite material , polymerization , mineralogy , engineering , metallurgy
The insulation effect of an inclusion complex formed by polyaniline with emeraldine base as a conducting polymer and β‐cyclodextrin as insulators of cyclic form has been studied using the oxidation by iodine in solution of N‐methyl‐2‐pyrrolidone. When polyaniline is oxidized by iodine in the solution, the solution color changes from blue to violet. We observed little change in color at 273 K or a considerable delay of the spectral change at 288 K in the solution of the inclusion complex and iodine in contrast to that in solution of polyaniline and iodine without β‐cyclodextrin. This suggests that the conjugated conducting polymer in the inclusion complex is almost completely insulated by the threaded cyclodextrin molecules from the chemical oxidation by iodine and that the oxidation at 288 K proceeds after the inclusion complex dissociates into polyaniline and cyclodextrin in the solution. Copyright © 2000 John Wiley & Sons, Ltd.