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以2,4-双[4-(N,N-二苯氨基)-2,6-二羟基苯基](SQ-H)方酸菁为骨架,通过向氮原子上所连接的4个苯基上引入不同长度的烷基取代基(甲基、乙基、正丁基和正己基),合成了分子SQ-C1/C2/C4/C6,并研究了其分子结构与光电性能的构效关系.研究结果显示,对于基于该骨架的化合物而言,烷基链的增加会使分子的摩尔消光系数降低,同时,分子与PC_(71)BM共混膜的粗糙度及相分离程度逐渐增加.接触角测试结果表明,这一形貌变化的本质是由于随不同长度烷基链(疏水性不同)的引入,改变了原有分子骨架的表面能,从而导致其与受体材料间的表面能差异改变所致.
Using 2,4-bis [4- (N, N-diphenylamino) -2,6-dihydroxyphenyl] (SQ-H) squarylium as a backbone, The molecular structure of SQ-C1 / C2 / C4 / C6 was synthesized by introducing different alkyl substituents (methyl, ethyl, n-butyl and n-hexyl) The results show that for the compounds based on the backbone, the increase of alkyl chain will decrease the molar extinction coefficient of the molecule, meanwhile, the degree of roughness and phase separation between the molecular and PC_ (71) BM blend membrane increase gradually The results of the contact angle test showed that the essence of this morphological change is that the surface energy of the original molecular framework is changed by the introduction of alkyl chains with different lengths (different hydrophobicities), which leads to the surface between the receptor material Can change due to differences.