We have investigated features of liquid crystalline materials for organic polycrystalline field effect transistors (OFETs) with a model liquid crystalline material of 5,5”-dioctylterthiophene (8-TTP-8). Bulk mobility in polycrystalline thin films of 8-TTP-8 via its liquid crystalline phase was easily determined by time-of-flight experiments. Furthermore, we could evaluate impurity contamination...

2014 A « critical » degree of polydispersity is postulated beyond which liquid and crystalline states merge. For a system with a triangular particle-size distribution, the disappearance of the melting transition is estimated to occur at levels of just less than 30 % polydispersity. J. Physique Lett. 46 (1985) L-229 L-232 ~ 15 MARS 1985, : -1 Classification Physics Abstracts 64. 70D 82.70 Freezi...

The recent development of materials for organic field effect transistors (OFETs), including small-molecule and polymer materials, are briefly reviewed, and the problems that remain to be solved prior to practical application and use are discussed. Liquid crystalline materials are good candidates for OFETs because of their advantageous properties over soluble small-molecule materials. Liquid cry...

a quantum chemical investigation was carried out to study the properties of intermolecular f•••f, br•••br and br•••o interactions in crystalline 1-bromo-2,3,5,6-tetrafluoro-nitrobenzene (bfnb). this system was selected to mimic the halogen-halogen as well as halogen bonding interactions found within crystal structures as well as within biological systems. we found that fluorine atoms have weak ...

結晶性配位高分子（CCP）および多孔質なCCPであるMOFにおける金属イオン交換は，新たな機能性物質の合成法として有効である。CCPおよびMOFの結晶構造の柔軟性がイオン交換反応特性に大きく影響するはずであるが，これまでそのような議論はほとんどされてこなかった。本研究では，Ce3＋とビス（4-ニトロフェニル）リン酸が形成するCCP（CeL3）を合成し，CeL3中のCe3＋と水溶液中に過剰に存在するランタノイドイオン（Ln3＋; Ln3＋≠Ce3＋）の交換反応を調べた。原子番号が隣合うTm3＋とYb3＋で配位高分子中の金属イオンモル分率がおおよそ0と1になるという，原子番号に対して不連続に変化する極めて珍しい選択性序列を見出した。溶液条件次第では，Er3＋とYb3＋およびYb3＋とLu3＋で不連続な変化となった。CeL3でのイオン交換反応が進行するには，イオン交換反応によって生じる混合...