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- W2048916646 abstract "An aramid resin, poly(p-phenylene terephtalamide) (PPTA) was precoated on an ITO electrode as a stable matrix film. Iridium oxide could be electrodeposited on the electrode because the PPTA film was permeable to dissolved species. Although the cyclic voltammogram (CV) pattern of the PPTA–iridium oxide film was almost the same as that of the original iridium oxide film, the color change differed a little. In the oxidized state, the PPTA–iridium oxide film showed greenish blue. The XPS-biding energy of Ir 4f5/2 and Ir 4f7/2 electrons was shifted to about 2 eV higher energy. The maximum absorption wavelength of the original iridium oxide film was about 650 nm, while that of the PPTA–iridium oxide film was about 600 nm. The color change was probably due to donating of the lone pair electrons of PPTA to the indium. The electrodeposition of Au on the PPTA–iridium oxide film was carried out. The obtained PPTA–iridium oxide–Au film showed quite different electrochromic properties. New redox current peaks appeared in the CV of the film. The film was colored vermilion in the reduced state and greenish blue in the oxidized state. The XPS-biding energy of Ir 4f5/2 and Ir 4f7/2 electrons was shifted to about 2 eV lower energy, implying that the electrodeposition of Au transformed the electronic state and structure structure of iridium oxide, suggesting the formation of a –Au–Cl–Ir– binuclear Cl-bridged complex." @default.
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- W2048916646 date "2004-02-01" @default.
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- W2048916646 title "Novel color change of electrochromic iridium oxide in a matrix aramid resin film" @default.
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- W2048916646 doi "https://doi.org/10.1016/j.elecom.2003.10.026" @default.
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