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    • 2. 发明专利
    • VIOLOGEN-BONDED PORPHYRIN DERIVATIVE
    • JPH07268229A
    • 1995-10-17
    • JP5881594
    • 1994-03-29
    • TOKYO GAS CO LTD
    • HOSONO HIDEYUKI
    • C09B47/32
    • PURPOSE:To obtain a viologen-bonded porphyrin derivative serving as a photofunctional molecule with greatly improved properties by using a specific compound containing a viologen. CONSTITUTION:This derivative is represented by formula I. In formula I, M is a metal, a metal halide, a metal oxide, a metal hydride, or two hydrogen atoms; R1, R2, and R3 each is hydrogen, methyl, or an alkyl; and R4 is a viologen represented by formula II (wherein m, indicating the number of methylene groups, is 3-18, and n, indicating the number of alkyl chains, is 9-18). For enhancing hydrophobicity, the viologen has a 9C or higher alkyl group bonded thereto. If the alkyl is an 8C or lower one, the derivative has insufficient hydrophobicity and is almost insoluble in benzene or chloroform. If m is 2 or smaller, the derivative is extremely difficult to synthesize. If m is 19 or larger, the derivative has impaired photofunctional properties because of too long a distance between the viologen and the porphyrin.