Fast electron transport in discotic columnar phase of triphenylene derivative, hexabutyloxytriphenylene

被引:5
作者
Iino, H [1 ]
Hanna, J
Jäger, C
Haarer, D
机构
[1] Tokyo Inst Technol, Imaging Sci & Engn Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
[2] Univ Bayreuth, Lehrstuhl Expt Phys 4, Bayreuth, Germany
关键词
carrier transport; charge carrier mobility; discotic liquid crystal; electronic transport; ionic transport; triphenylene derivative;
D O I
10.1080/15421400590957062
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We have re-investigated the charge carrier transport in a discotic columnar phase of triphenylene derivative, hexabutyloxytriphenylene (H4T) by time-of-flight experiments. We observed two transits for negative charge carriers in a different time range that corresponded to a fast mobility of 10(-2)cm(2)/Vs and a slow mobility of 10(-5) cm(2)/VS in the discotic hexagonal plastic phase of H4T, while a high mobility on the order of 10(-2)cm(2)/Vs as reported previously. These were attributed to the electronic conduction caused by fast electron transport along with the discotic columns and slow ionic conduction caused by drift of ionized impurity molecules hat accepted photo-generated electrons, respectively.
引用
收藏
页码:1171 / 1178
页数:8
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