标题：Heat-set supramolecular organogels composed of beta-cyclodextrin and substituted aniline in N,N-dimethylformamide
作者：Zhao, Wenjing; Li, Yuanyuan; Sun, Tao; Yan, Hui; Hao, Aiyou; Xin, Feifei; Zhang, Huacheng; An, Wei; Kong, Li; Li, Yueming
作者机构：[Hao, Aiyou] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China.; Shandong Univ, Key Lab Colloid & Interface Chem, Minist Educ, Jina 更多
通讯作者地址：[Hao, AY]Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China.
来源：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
关键词：Heat-set; Multi-component; Gelling temperature; beta-Cyclodextrin;; para-Substituted aniline
摘要：This paper describes a new class of heat-set organogels based on beta-cyclodextrin (beta-CD) and para-substituted anilines (ps-An) connected by supramolecular interactions. The organogel is prepared by mixing beta-CD, ps-An and lithium chloride in N,N-dimethylformamide (DMF). The heat-set organogel is a thermo-reversible gel system which turns into a clear solution upon cooling to room temperature and is re-formed when heated to the gelling temperature (T(get)). It is very interesting that the ps-An gelator, as well as other gelators, can be gelated at high temperature but dissolved as the temperature in the system decreases. The organogel is a multi-component system, in which the gelators are small commercially available organic molecules that can self-assemble into fibrous structures based on supramolecular interactions. Further studies showed the T(get) can be influenced and controlled by the substituents of ps-An. The T(get) of the system is higher when the aniline is substituted with electron-donating substituents rather than electron-withdrawing substituents. (C) 2010 Elsevier B.V. All rights reserved.