The electrical conductivity of 2-(p-decyloxybenzylideneamino)-9-fluorenone (DBAF), which has a large π-electronic group, was investigated in the nematic state. The dark conductivity showed a positive anisotropy and was attributed to ionic conduction. The photocurrent was observed in the absorption region of DBAF and was enhanced by doping with 2,4,7-trinitro-9-fluorenone. The photocarriers seem to be generated from the excited state of DBAF by one photonic process.
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Okamoto et al. (1983) studied this question.
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