基于氢键作用由低分子量凝胶因子形成的超分子水凝胶  

Supramolecular Hydrogel Formed from Gelator with Low Molecular Weight Based on Hydrogen Bonds

作　　者：王毓江[1] 唐黎明[1] 王琰[1] 

机构地区：[1]清华大学化工系先进材料教育部重点实验室,北京100084

出　　处：《高等学校化学学报》2006年第8期1587-1589,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20574041)资助

摘　　要：A building unit(defined as SBU) synthesized from 1,2,4,5-benzene tetracarboxylic acid and 4-hydroxy pyridine was used as the gelator with low molecular weight to form supramolecular hydrogels at various concentrations.The dried hydrogels(xerogels) were observed by scanning electron microscope(SEM).The results indicate that the xerogels possess network structures composing of intertwined fibers and the dimension of the fibers can be regulated by the concentration of SBU.Powder X-ray diffraction(XRD) analysis indicates that the fibers are connected by SBU building units.The reversible sol-gel transition of the supramolecular system with the change of temperature was also noticed.A building unit（defined as SBU） synthesized from 1,2,4,5-benzene tetracarboxylic acid and 4-hydroxy pyridine was used as the gelator with low molecular weight to form supramolecular hydrogels at various concentrations. The dried hydrogels （xerogels） were observed by scanning electron microscope （SEM）. The results indicate that the xerogels possess network structures composing of intertwined fibers and the dimension of the fibers can be regulated by the concentration of SBU. Powder X-ray diffraction（XRD） analysis indicates that the fibers are connected by SBU building units. The reversible sol-gel transition of the supramolecular system with the change of temperature was also noticed.

关 键 词：超分子水凝胶 凝胶因子 形貌 

分 类 号：O631[理学—高分子化学]