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LIGHT‐INDUCED ELECTRICAL EFFECTS IN A LIQUID CRYSTAL BLM CONTAINING TCNQ
Author(s) -
Salamon Zdzislaw,
Tien H. Ti
Publication year - 1988
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1988.tb02822.x
Subject(s) - photocurrent , liquid crystal , bilayer , photosensitizer , photochemistry , electron acceptor , membrane , chemistry , photoinduced electron transfer , acceptor , materials science , electron transfer , optoelectronics , biochemistry , physics , condensed matter physics
— The light‐induced capacitance changes and also both photovoltage and photocurrent under continuous illumination have been investigated in pigmented liquid crystal bilayer membranes (PBLM)‡ containing TCNQ as photosensitizer with Na 2 SO 3 electron donor on one side and methylene blue electron acceptor on the other side. The results have shown that TCNQ in cyanobiphenyl membrane produces a unique photoactive BLM system in which all three main parameters (conductivity, capacity and voltage across the membrane) are in a wide range altered by the light. It is shown that a TCNQ‐cyanobiphenyl charge transfer complex is responsible for the observed photochanges. The possible mechanism of photoinduced electrical effects in this type of PBLM is discussed.