Polymorphism in Opto-Electronic Materials with a Benzothiazole-fluorene Core: A Consequence of High Conformational Flexibility of π-Conjugated Backbone and Alkyl Side Chains
作者:Amol G. Dikundwar、Gitish K. Dutta、Tayur N. Guru Row、Satish Patil
DOI:10.1021/cg101579f
日期:2011.5.4
and has been analyzed systematically in terms of the packing characteristics involving π···π interactions. The conformational flexibility of the π-conjugated 2,2′-(fluorene-2,7-diyl)bis(4,1 phenylene)bisbenzo[d]thiazole backbone coupled with orientational freedom of the terminal alkyl chains were found to be the key factors responsible for these polymorphic modifications. Attempts to grow suitable crystals
芴及其衍生物是光电器件领域中众所周知的有机半导体材料,因为它们具有电荷传输特性。三种新的有机半导体材料,即2,2'-(((9,9-丁基-9 H-芴-2,7-二基)双(4,1亚苯基))双苯并[d]噻唑,C4;2,2'-((辛基-9 H-芴-2,7-二基)双(4,1亚苯基))双苯并[d]噻唑,C8;和2,2'-(((9,9-十二烷基-9 H合成了具有芴苯并噻唑芴骨架的C12-芴芴2,7-二基)双(4,1亚苯基)双苯并[d]噻唑,并对其光物理性质进行了表征。在前两个导数(C4和C8)中研究了伴随多态现象,并根据涉及π···π相互作用的堆积特性进行了系统分析。发现π-共轭的2,2'-(芴-2,7-二基)双(4,1亚苯基)双苯并[d]噻唑骨架的构象柔韧性与末端烷基链的取向自由性是关键这些多态性修饰的原因。为化合物C12的单晶X射线衍射生长合适的晶体的尝试未成功。