Synthesis and photophysics of ambipolar fluoren-9-ylidene malononitrile derivatives.
作者： Leandro A. Estrada , Douglas C. Neckers
DOI: 10.1021/JO901869G
关键词:
摘要: The efficient synthesis of ambipolar 2,7- and 3,6-disubstituted fluoren-9-ylidene malononitrile derivatives (4 9) is described. Structure−activity relationships depend on the position substitution. Population S1 excited state in 2,7-disubstituted FM achieved via higher states, as evidenced from UV−vis absorption emission spectra. results are supported by TDDFT calculations. Charge transfer states were main deactivation path 9b polar solvents, fluorescence spectroscopy.
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