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meso-Arylethynyl subporphyrins as efficient and tunable photo-induced electron transfer units

    Excited state dynamics of meso-arylethynyl-substituted subporphyrins can be tuned by 4-substituent at the arylethynyl group and solvent polarity. In polar acetonitrile, phenylethynyl subporphyrin 1 exhibited enhanced fluorescence, while (4-dimethylaminophenyl)ethynyl subporphyrin 2 showed red-shifted fluorescence from its charge-separated state and (4-nitrophenyl)ethynyl subporphyrin 3 displayed efficient fluorescence quenching due to charge separation.

    References

    Most comprehensive & up-to-date research on PORPHYRINS
    Handbook of Porphyrin Science now available in 46 volumes