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Optical data storage by novel photoelectrochromic polymer
Author(s) -
Nagamura Toshihiko,
Isoda Yuji,
Sakai Kenkichi
Publication year - 1992
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990270206
Subject(s) - trifluoromethyl , polymer , 3d optical data storage , materials science , optical storage , excitation , electron transfer , ion , photochemistry , charge (physics) , boron , polymer chemistry , photoinduced electron transfer , electron , chemical engineering , chemistry , optoelectronics , organic chemistry , composite material , alkyl , physics , quantum mechanics , electrical engineering , engineering
Abstract A novel elastic polymer containing 4,4′‐bipyridinium salts with tetrakis[3,5‐bis(trifluoromethyl)phenyl]borate as part of the main chain was synthesized. The cast film showed persistent and reversible colour changes due to photoinduced electron transfer upon excitation of an ion‐pair charge‐transfer band ( ex >365 nm) in vacuo. The lifetime of the coloured state markedly depended on temperature. The optically written data were stored without decay below 0°C and were erased thermally at elevated temperatures. The colour changes were reversibly repeatable for many times.