在这里,我们展示了基于烷基化稠环噻吩并苯的半导体分子供体 - 受体 (DA) 化合物家族的共同结构特征。对各种取代的苯并噻吩[3,2- b ][1]苯并噻吩 (BTBT)、未取代的二噻吩并[3,2- b :2',3' - d ]噻吩和未取代的苯并噻吩的 22 种 DA 化合物进行晶体结构分析[1,2- b :4,5- b ']二噻吩作为供体,与 7,7,8,8-四氰基醌二甲烷 (TCNQ) 及其氟化衍生物 (F m TCNQ, m= 0、1、2 和 4) 作为受体。(取代BTBT)(TCNQ衍生物)的14种DA化合物形成同形的层状分子堆积,其中BTBT和TCNQ的平面骨架之间的分子间堆积排列是共同的,各种取代基起到补充作用。进行密度泛函理论计算以研究沿 DA 堆叠的 π 电子核之间的分子间力。色散相互作用是主要的分子间吸引力,显示出较弱的堆叠位置依赖性,而短程轨道 - 轨道相互作用始终是排
The purpose of the present invention is to provide an organic semiconductor material having liquid crystallinity and high electron mobility. The present invention is an organic semiconductor material having at least a charge-transporting molecular unit (A) having a structure of an aromatic fused ring system and a cyclic structural unit (B) bonded to the aforementioned unit via a single bond, wherein the unit (A) and/or the unit (B) has a side chain composed of a unit (C), and wherein the organic semiconductor material exhibits a liquid crystal phase that is different from an N-phase, an SmA-phase or an SmC-phase.