側鎖末端にオリゴシロキサン部位を有する液晶性フタロシアニン誘導体 — ナノ相分離効果によるカラムナー相の安定化と両極性電荷輸送特性

抄録

Novel nickel phthalocynaine complexes bearing siloxane moieties were synthesized and their mesomorphic properties and their carrier transport properties were investigated. These compounds showed columnar mesophases over a wide range of temperature including room temperature through nanosegregation between π-conjugated cores and oligosiloxane moieties. Most of the compounds exhibit higher phase transition temperatures to the isotropic phase than that of alkylated compound 1. Moreover, the compounds that show a hexagonal columnar phase form homeotropic alignment in sandwich cells consisting of two ITO electrodes. Therefore, carrier transport property of some compounds could be evaluated by a Time-of-Flight method which revealed that they exhibited ambipolar carrier transport properties in columnar mesophases.