全文下载：2012060575
李忠涛1, 刘水平2， 刘东1
(1. 中国石油大学（华东） 重质油国家重点实验室, 山东 青岛 266580;
2. 江南大学 纺织服装学院,江苏 无锡 214122)
摘要： 研究了六溴三聚吲哚在不同溶剂中的自组装行为，并通过改变溶剂的极性和沸点调控自组装结构。结果表明，通过向六溴三聚吲哚的N,N′-二甲基甲酰胺（DMF）溶液中添加不同极性的第2种溶剂（添加后六溴三聚吲哚为1×10-3 mol·L-1），其自组装结构可以进行调控。降低六溴三聚吲哚溶液的浓度（0.5×10-3 mol·L-1）发现，分子可自组装成岛状结构。表明分子自身间相互作用较强，分子首先堆积成较小的核，然后以此为中心向四周生长。添加极性较强的溶剂有利于分子的重组，形成较长的纳米线；添加非极性溶剂时分子容易团聚，生长的纳米线的长度较短。
关键词: 超分子自组装; 稠环芳烃; 纳米线; 三聚吲哚；溶剂诱导
中图分类号： O 641.3 文献标志码： A
收稿日期：2012-09-17
基金项目： 国家自然科学基金资助项目(21176259 ).
作者简介： 李忠涛(1983—)，男，博士.
Tunable Self-assemble Structures of Hexabromotriindole in Different Solvents
LI Zhong-tao1, LIU Shui-ping2, LIU Dong1
(1.State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, China;
2.College of Textile and Clothing, Jiangnan University, Wuxi 214122, China)
Abstract: A solution-processed hexabromotriindole self-assembly behavior on substrate have been investigated.The experimental results showed that the molecules closely stacked with each other and self-assembly into well-ordered nanostructure in protonic solvent (dimethylformamide) could be controlled through adding second solvent to different polarities with the evapoation of the solvents (hexabromotriindole 1×10-3 mol·L-1). The addition of a higher polarity solvent facilitates the assembly of the molecules into longer and well-defined nanowires. The low polarity solvent will lead to shorter nanowires. The solution with a lower concentration (hexabromotriindole 0.5×10-3 mol·L-1) will assembly into well-identified “islands” on the substrate surface.This revealed that the intermolecular interactions are stranger than those of the interactions between molecules and substrate.
Key words: supramolecular self-assemble; polyaromatic hydrocarbon; nanowire; triindole; solvent induce
