バナジルフタロシアニン誘導体LB膜の作製と電気特性

Abstract

Two kinds of vanadyl phthalocyanine LB films with different side chain were prepared on qualtz substrates to investigate film structures and electrical properties. One is tetra-carboxy vanadyl phthalocyanine (TC-VOPc) and the other is tetra-t-butyl vanadyl phthalocyanine (TTB-VOPc). It became known that both films were amorphous and these molecules stood oblique on the substrate. The Q band in UV-VIS absorption depended on the side chain compounds suggesting that it is affected by the molecular stacking considerably. The dark current of TC-VOPc film had sensitivity to humidity. However, that of TTB-VOPc film had no sensitivity. These results were discussed on the basis of ionic conduction mechanism concerning to the hydrophilic radical in the side chain.