Exploiting Host-Guest Interactions for the Synthesis of a Rod-Rod Block Copolymer with Crystalline and Liquid-Crystalline Blocks

详细信息    查看全文

• 作者：Dr. Feng Zhou ; Ke-Hua Gu ; Zhen-Yu Zhang ; Meng-Yao Zhang ; Sheng Zhou ; Prof. Dr. Zhihao Shen and Prof. Dr. Xing-He Fan
• 刊名：Angewandte Chemie
• 出版年：2016
• 出版时间：November 21, 2016
• 年：2016
• 卷：128
• 期：48
• 页码：15231-15235
• 全文大小：2232K
• ISSN：1521-3757

文摘

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.