含烷基柔性链的n型刚棒-线团分子的合成、表征与自组装

Synthesis,Characterization and Self-Assembly of n-Shaped Rod-Coil Molecule Containing Alkyl Chains

含多个对苯撑作为刚棒,齐聚烷基或烷氧基作为柔性链的刚棒-线团(rod-coil)分子,由于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。研究表明,刚棒嵌段的形状影响着分子排列的方式、自组装性能和微结构,因此本文设计了n型芳香嵌段、柔性链全部为烷基的n型刚棒-线团分子,通过红外光谱、NMR和MALDI-TOF-MS对其结构进行了表征,利用DSC、POM和SAXS对此化合物的自组装行为进行了研究。结果表明,含烷基柔性链的n型分子在固态时能形成双分子的层状结构。

The rod-coil molecules containing the multi-paraphenylene as a rod and oligo alkyl and alkoxyl group 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. The shapes of the rod block can dramatically influence the fashion of molecular arrangement,selforganizing property and micro-structure of rod-coil molecular system. The n-shaped rod-coil molecule containing alkyl chains is successfully synthesized and characterized by IR,NMR and MALDI-TOS-MS. The self-assembly behavior is studied using DSC,POM and SAXS. The results showed that n-shaped rod-coil molecule containing octadecyl flexible chains can self-assemble into a dimolecular layer structure at the solid state.