Columnar Benzoperylene-Hexa- and Tetracarboxylic Imides and Esters: Synthesis, Mesophase Stabilisation and Observation of Charge-Transfer Interactions between Electron-Donating Esters and Electron-Accepting Imides
作者:Julien Kelber、Marie-France Achard、Bénédicte Garreau-de Bonneval、Harald Bock
DOI:10.1002/chem.201100939
日期:2011.7.11
to form columnar mesophases, benzo[ghi]perylene 1,2,5,10‐tetracarboxylic tetraalkyl esters have been synthesized by regioselective oxidative Diels–Alder addition of maleic anhydride to 3,10‐dicyanoperylene, and a room temperature hexagonal columnar mesophase was obtained with branched alkyl chains. The acceptor‐type electronic properties of the tri‐ and diimides have been found to be considerably more
苯并[ expl ] per1,2,4,5,10,11-六羧酸三烷基酰亚胺和二烷基亚氨基-二烷基酯衍生物在室温下显示出热力学稳定的六方柱状液晶相,这是通过使用先前未开发的手性化合物获得的。外消旋的α-支链烷基酰亚胺官能团。这里描述的三烷基酰亚胺之一是第一个室温柱状完全低聚烷基酰亚胺取代的芳烃,因此构成了自组装有机受体材料的原型。由于发现相关的六羧酸六酯仅表现出形成柱状中间相的微弱趋势,因此苯并[ ghi]戊二烯1,2,5,10-四羧酸四烷基酯是通过区域选择性氧化Diels-Alder将马来酸酐加成到3,10-二氰基亚戊二烯中而合成的,室温下六角形的柱状中间相带有支链烷基链。已经发现,三酰亚胺和二酰亚胺的受体型电子特性比六羧酸酯和四羧酸酯的受体型电子特性要明显得多,并且接近原型受体材料C 60的电子特性。。以二酰亚胺或三酰亚胺为受体,以四酯为供体,但未以六酸酯为供体,观察到形成了吸收红移色的