Influence of gelator structures on formation and stability of supramolecular hydrogels  

作　　者：Shunji Kono Yu Jiang Wang Li Ming Tang 

机构地区：[1]Laboratory of Advanced Materials, Department of Chemical Engineering, Tsinghua University, Beijing 100084, PR China [2]Department of Organic ＆ Polymeric Materials, Graduate School of Science ＆ Engineering, Tokyo Institute of Technology,

出　　处：《Chinese Chemical Letters》2007年第12期1548-1550,共3页中国化学快报（英文版）

摘　　要：A supramolecular hydrogel （defined as G1） formed from 1,2,4,5-benzene tetracarboxylic acid （BTCA） and 2-amino-3- hydroxypyridine possessed higher Tgel than that of another hydrogel （defined as G2） formed from BTCA and 3-hydroxypyridine. Based on the analysis of their xerogels by 1H NMR, IR and XRD, the higher stability of G1 was attributed to the formation of stronger hydrogen binding enhanced by the ortho amino group of 2-amino-3-hydroxypyridine.A supramolecular hydrogel （defined as G1） formed from 1,2,4,5-benzene tetracarboxylic acid （BTCA） and 2-amino-3- hydroxypyridine possessed higher Tgel than that of another hydrogel （defined as G2） formed from BTCA and 3-hydroxypyridine. Based on the analysis of their xerogels by 1H NMR, IR and XRD, the higher stability of G1 was attributed to the formation of stronger hydrogen binding enhanced by the ortho amino group of 2-amino-3-hydroxypyridine.

关 键 词：Supramolecular hydrogel GELATION Hydrogen bond 

分 类 号：O648.17[理学—物理化学]