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1 2009

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Methacryloyl functionalized hydrazones as hole-transporting materials for electrophotography

Budreckiene R., Andruleviciute V., Buika G., Grazulevicius J. V., Jankauskas V., Grazuleviciene V.

Materials Science Poland

2009

Vol. 27, No. 1

61--72

Syntheses and thermal, optical as well as photoelectrical properties of carbazolyl-, triphenylaminoand 2-hydroxy-4-diethylaminophenyl-based hydrazones with reactive methacryloyl groups have been reported. All the synthesized materials form glasses with glass transition temperatures ranging from 9 to 50 °C. They absorb electromagnetic radiation in the 250-440 nm range. Ionization potentials of the amorphous films of the synthesized materials, established by electron photoemission technique range from 5.20 to 5.71 eV. The lowest ionization potential and the best charge transport properties were observed for 2-(methacryloyl)oxy-4-diethylaminophenyl-1-carbaldehyde N,N-diphenylhydrazone. Time-of-flight hole mobilities in its 50% solid solution in bisphenol Z polycarbonate reach 10-5 cm2/(Vos) at high electric fields.