화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.636, No.1, 117-121, 2016
Optical and electrical characteristics of solvent-extracted and anisole-insoluble dyes obtained from coal tar pitch
We investigated the photoluminescence-excitation spectrum and the hole mobility of solvent-extracted CTP (coal tar pitch). The hole mobility increased with more ordered CTP as judged by the I-D/I-G ratio. In addition, anisole-insoluble CTPs with different softening points were also characterized. The chloroform- or DMSO-extract from the anisole-insoluble CTP with the higher softening point showed the more molecular order and the higher hole mobility than those of the CTP with the lower softening point. By using the CTP with the higher softening point, the highest hole mobility of 9.9 x 10(-5) cm(2)/Vs was observed when the dye extracted with DMSO from the anisole-insoluble CTP was used.