Exploiting Host-Guest Interactions for the Synthesis of a Rod-Rod Block Copolymer with Crystalline and Liquid-Crystalline Blocks
Exploiting Host-Guest Interactions for the Synthesis of a Rod-Rod Block Copolymer with Crystalline and Liquid-Crystalline Blocks
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利用主客体相互作用合成具有结晶和液晶嵌段的棒-棒嵌段共聚物
DOI：
10.1002/anie.201608043
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Fan Xing-He
中科院分区：
文献类型：
--
作者：
Zhou Feng;Gu Ke-Hua;Zhang Zhen-Yu;Zhang Meng-Yao;Zhou Sheng;Shen Zhihao;Fan Xing-He
利用主体分子三邻苯二氧基环三磷腈（TPP）与嵌段共聚物聚环氧乙烷-嵌段-聚（4′-辛氧基-2-乙烯基联苯-4-羧酸辛酯）（PEO-B-PVBP）之间的主客体相互作用，构建了超分子棒状嵌段共聚物P（EO@TPP）-B-PVBP.它由具有六方晶体结构的结晶链段P（EO@TPP）和柱状双相液晶链段（PVBP）组成。由于PVBP链段自身排列为柱状结晶相，因此具有较小直径的包合物P（EO@TPP）的晶体结构被破坏。因此，自组装纳米结构明显受到两个嵌段之间相互作用的影响。基于宽角和小角X射线散射分析，我们得出结论，超分子棒-棒嵌段共聚物可以自组装成柱中柱双六边形结构。
By making use of the host–guest interactions between the host molecule tris‐o‐phenylenedioxycyclotriphosphazene (TPP) and the rod–coil block copolymer (BCP) poly(ethylene oxide)‐block‐poly(octyl 4′‐octyloxy‐2‐vinylbiphenyl‐4‐carboxylate) (PEO‐b‐PVBP), the supramolecular rod–rod block copolymer P(EO@TPP)‐b‐PVBP was constructed. It consists of a crystalline segment P(EO@TPP) with a hexagonal crystalline structure and a columnar nematic liquid‐crystalline segment (PVBP). As the PVBP segments arrange themselves as columnar nematic phases, the crystalline structure of the inclusion complex P(EO@TPP), which has a smaller diameter, is destroyed. The self‐assembled nanostructure is thus clearly affected by the interplay between the two blocks. On the basis of wide‐ and small‐angle X‐ray scattering analysis, we conclude that the supramolecular rod–rod BCP can self‐assemble into a cylinder‐in‐cylinder double hexagonal structure.