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Electrochromism of iodized Yb‐diphthalocyanine polymer film
Author(s) -
Kashiwazaki N.,
Yamana M.
Publication year - 1993
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1984877
Subject(s) - electrochromism , materials science , electrode , ion , iodine , polymer , analytical chemistry (journal) , chemistry , chromatography , composite material , organic chemistry , metallurgy
— The electrochromism of a plasma‐polymerized Yb‐diphthalocyanine (pp‐YbPc 2 ) film, which can also be iodized by a plasma method, is described. Iodine in the film is immobilized. The prepared film exhibits a red color with the formation of a charge‐transfer complex. In an electro‐chromic cell, the film exhibits a reversible multicoloration of red, green, and blue by applying, respectively, positive, null, and negative potentials with respect to an Ag/AgCl reference electrode. The green‐red coloration occurs without injection of counter‐ions. Charges for the green‐red coloration are transferred between immobilized iodine and Yb‐diphthalocyanine. Since ion injection, which is a rate‐determining step of coloration, does not occur, the green‐red coloration response is faster than that of the uniodized film.