线团-刚棒-线团三嵌段分子有序纳米结构的自组装

Organized Nano-Structures from Self-Assembly of Coil-Rod-Coil Triblock Molecules

目前,在纳米科学和仿生化学等方面的一个非常吸引人的课题是构建一种新颖的、复杂的大分子或超分子体系,并通过设计连接有机嵌段单元使其具有很好的形状和功能。在线团-刚棒-线团三嵌段分子体系中,刚棒嵌段的各向异性和连接嵌段的微相分离作用导致分子自组装形成各种有序聚集体,并且通过改变柔性链体积分数、分子长度、柔性链横截面积、刚棒中心侧链、刚棒形状等参数可以调控其自组装的聚集形态。本文详细总结了各种参数对线团-刚棒-线团三嵌段分子自组装结构所产生的影响,探讨了这些参数与构建超分子结构之间的关系,对今后设计合成具有自组装功能的分子具有指导性意义。

At present, one of the most fascinating subjects in areas such as nanoscience and biomimetic chemistry is concerned with the construction of novel complex macromolecular and supramolecular architectures with well defined shapes and functions by using specifically designed organic building blocks. In coil-rod-coil tirblock molecular system,the anisotropic orientation of the rod segments and the repulsion between the covalently connected blocks lead to self-organization into a wide variety of aggregation structures that can be manipulated by variation of coil volume fraction, molecular length, cross-sectional area of coil segment, the side groups in the center of rod segment, as well as the shape of the rod segments. The various parameter influence on self-assembly of coil-rod-coil triblock molecules was summarized in this article, the relationship between these parameters and the construction of the supramolecular structure was discussed, the work was significance of guiding on designing and synthesising the self-assembly molecules in future.