INVESTIGATION ON PHOTOINDUCED COLORATION AND MECHANISM OF FLUORANE DYE

doi:10.7517/j.issn.1674-0475.1997.02.109

Abstract

Abstract: Photoinduced coloration system consisting of fluorane dye(FR) and iodonium salt(DPIOB) was investigated. Upon irradiation, the excited fluorane dye and iodonium salt may undergo electron transfer reaction to form FR_·⁺ and IPh₂^· radical pair, the latter rapidly decomposes to phenyl radical (Ph^·) and iodobenze, and the color form of ring opening ester (FRPh) subsequently is formed by radical coupling between FR_·⁺ and Ph^·. The structure of FRPh possesses good stability, and thus it demonstrates electron transfer reaction is one of effective pathway to improve the color stability of fluoranedye.

Key words: fluorane dye, iodonium salt, electron transfer, photo colorarion

ZHOU Wenhui, LIU Jianmin, LI Miaozhen, WANG Erjian. INVESTIGATION ON PHOTOINDUCED COLORATION AND MECHANISM OF FLUORANE DYE[J]. Imaging Science and Photochemistry, 1997, 15(2): 109-113.

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INVESTIGATION ON PHOTOINDUCED COLORATION AND MECHANISM OF FLUORANE DYE

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