基于亚苯基和齐聚醚的V型刚-柔分子自组装

Self-assembly of V-shaped Rod-coil Molecules Based on Phenylene and Oligo-ether

由于含多个亚苯基作为刚棒、低聚醚作为柔性链的刚-柔分子具有很强的微相分离和π-π堆积作用,可以在本体和溶液中产生有效的自组装。分子自组装需要两个条件:驱动力(非共价键的弱相互作用力)和导向作用(分子在空间的互补性)。刚性嵌段的形状不仅决定了分子排列方向、空间尺寸,而且还影响着驱动力的大小。本文综述了以亚苯基为V型刚棒、齐聚醚作为柔性链的刚-柔分子自组装行为,并展望了V型刚-柔分子未来的研究方向。

Rational molecular design can create self-assembled nanostructures through weak intermolecular forces,such as hydrogen bonding,donor-acceptor interactions and reversible ligand-metal interactions.The driving force(weak interaction of non-covalent bonds) and guiding role(complementarities of molecules in space) are necessary when the molecules self-assemble.The shape of a rigid block not only determines the orientation of molecules,space size,but also affects the intensity of the driving force.The rod-coil molecules containing the multiphenylene as a rod and oligo-ether as a coil chain are able to self-assemble into various supramolecular nanostructures in bulk and aqueous solution through strong microphase separation of rod and coil segments and π- π stacking of aromatic rod segments interaction.In this paper,the self-assembling behaviors of V-shaped rod-coil molecules were summarized and the future research trend of this kind of rod-coil molecules was prospected.