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Langmuir‐Blodgett films containing carotenoid dye. II. Structure and conducting characteristics of ethyl β‐apo‐8‐carotenoate/cadmium stearate LB films
Author(s) -
Park Y. H.,
Kim B. I.,
Kim Y. J.
Publication year - 1997
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19970131)63:5<619::aid-app9>3.0.co;2-x
Subject(s) - stearate , langmuir–blodgett film , cadmium , carotenoid , chemistry , polymer chemistry , materials science , nuclear chemistry , organic chemistry , molecule , biochemistry
The structure, doping, and electrical conductivity characteristics of ethyl β‐apo‐8‐carotenoate dye (EA8C)/cadmium stearate Langmuir‐Blodgett (LB) films were investigated. The EA8C/cadmium stearate mixed multilayer thin films, with the molar ratio of 1 : 4, prepared at subphase pH 6, exhibited well‐defined layered structures as determined by X‐ray diffraction (XRD) spectra. The mixed LB films went ready doping upon exposure to iodine vapor or dipping in sulfuric acid solution. The UV/VIS and XRD data showed that the incorporated EA8C was thermally stable up to 80°C. The best conductivity characteristics were obtained with the iodine vapor. Thus, the mixed LB films exposed to iodine vapor showed in‐plane and transverse conductivities of 10 ‐6 and 10 ‐7 –10 ‐8 S/cm, respectively. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 63: 619–624, 1997