High Hole Mobility for a Side-Chain Liquid-Crystalline Smectic Polysiloxane Exhibiting a Nanosegregated Structure with a Terthiophene Moiety
作者:Aya Matsui、Masahiro Funahashi、Toru Tsuji、Takashi Kato
DOI:10.1002/chem.200902440
日期:2010.12.3
30 %, respectively. The polymers exhibit ordered smectic phases at room temperature. The copolymers with dimethylsiloxane units form smectic phases as a consequence of nanosegregation between the mesogenic units and siloxane backbones with the alkylene spacers. Time‐of‐flight measurement reveals that the hole mobility exceeds 1×10−2 cm2 V−1 s−1 in the ordered smectic phase of the copolymer with a degree
合成了带有对噻吩侧基的介噻吩基团的侧链液晶硅氧烷聚合物。一个alkenylterthiophene衍生物与聚(氢)和聚(二甲基硅氧烷-处理过的共-hydrogenmethylsiloxane)■在我2的1的SiO / MeHSiO比率:1和7:分别为3,在Karstedt催化剂的存在下,以产生浅黄色聚合物。介晶单元的引入度分别为100%,50%和30%。该聚合物在室温下显示出有序的近晶相。与二甲基硅氧烷单元的共聚物构成的近晶相作为介晶单元和硅氧烷骨架与烯化间隔物之间nanosegregation的结果。时间飞行测量表明,空穴迁移率超过1×10-2 厘米2 V -1 s ^ -1在具有一定程度介绍的50%的介晶单元的有序的共聚物的近晶相。该值可与苯基萘和对噻吩的低分子量衍生物的高度有序的中间相的值相媲美。因为由柔性主链引起的偏析行为的,可以形成在所述共聚物的近晶相,尽管介晶基团的密度低的快速流子传输有利仔细分子堆积结构。