화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.525, 97-103, 2010
Carrier Mobility Behavior of Triphenylene Mesogen with a Hydrogen Bonding Amide Group
The charged carrier mobility was measured for the Col(h) mesophase of a hexa-substituted triphenylene of which one of the peripheral pentyloxy chains is replaced with n-butylamideethyleneoxy group (1) to compare that of hexapentyloxytriphenylene (2). The positive charge mobility was observed to be in the order of 10(-5) similar to 10(-4) cm(2) V(-1) s(-1). Though the thermal stability of Colh mesophase is higher than that of 2, the carrier mobility of 1 is smaller by one order of magnitude probably due to the presence of an electrical dipole of the carbonyl group. Also the temperature dependence of mobility in 1 exhabits a thermally activation behavior in a stronger way than in 2, indicating the hydrogen bond interaction affect the thermal behavior of charge hopping by a modification of molecular dynamics.