College of Chemistry, Beijing Normal University, Beijing 100875, P.R. China.
Chem Asian J. 2011 Jan 3;6(1):226-33. doi: 10.1002/asia.201000567.
Herein, the relationship between the supramolecularly self-assembled nanostructures and the chemical structures of coil-rod-coil molecules is discussed. A series of nonamphiphilic coil-rod-coil molecules with different alkyl chains, central mesogenic groups, and chemical linkers were designed and synthesized. The solvent-mediated supramolecular self-assembling of these coil-rod-coil molecules resulted in rolled-up nanotubes, nanofibers, submicron sized belts, needle-like microcrystals, and amorphous structures. The self-assembling behaviors of these coil-rod-coil molecules have been systematically investigated to reveal the relationship between the supramolecularly self-assembled nanostructures and their chemical structures. With respect to the formation of rolled-up nanotubes by self-assembly of coil-rod-coil molecules, we have systematically investigated the following three influencing structural factors: 1) the alkyl chain length; 2) the central mesogenic group; (3) the linker type. These studies disclosed the key structural features of coil-rod-coil molecules for the formation of rolled-up nanotubes.
本文讨论了超分子自组装纳米结构与线-棒-线分子化学结构之间的关系。设计并合成了一系列具有不同烷基链、中心介晶基团和连接基团的非两亲性线-棒-线分子。这些线-棒-线分子在溶剂的介导下发生超分子自组装，形成了卷成筒状的纳米管、纳米纤维、亚微米宽的带状物、针状微晶体和无定形结构。系统地研究了这些线-棒-线分子的自组装行为，以揭示超分子自组装纳米结构与其化学结构之间的关系。对于线-棒-线分子自组装形成的卷成筒状的纳米管，我们系统地研究了以下三个影响结构的因素：1）烷基链长度；2）中心介晶基团；3）连接基团的类型。这些研究揭示了线-棒-线分子形成卷成筒状的纳米管的关键结构特征。
