西北师范大学学报（自然科学版）Issue(1)：53-60,8.
对氟离子选择性识别的小分子有机凝胶的合成
Synthesis of a low molecular w eight organic gelator and its specific selectivity fo r sense F -
摘要
Abstract
In this paper ,a low molecular weight organic gelator (L) based on acyl hydrazone is designed and synthesized by using dimethyl 5‐hydroxyisophthalate . The gelator is synthesized via etherification , hydrazinolysis and aldimine condensation reactions under mild reaction conditions with high yield and it is characterized by IR ,1 HNMR and element analysis . The gelator shows excellent gelation ability in ethyl acetate , it can form stable organogels (OGL ) in ethyl acetate via self‐assemble with very low critical gelation concentrations . The self‐assembly mechanism is investigated by concentration dependent 1HNMR ,FT‐IR and X‐ray diffraction ,these experiments indicate that the gelator L is self‐assembled to supramolecular organogel OGL by the hydrogen bonds ,π‐π stacking , as well as the Van der Waals existing in the long alkyl chains . OGL show s specific selectivity for F - , other common anions can not lead to any similar response . After addition of solid TBAF , the colorless OGL gel changes to yellow sol . The anion response mechanisms of OGL are investigated by UV‐vis spectral titration and 1 HNMR titration with F - . The phenomena indicate that with the addition of F - the hydrogen bonds is destroyed and N—H group might undergo a deprotonation process . These reasons lead to the colorless OGL gel changes to yellow sol . T herefore , OGL can act as a F - responsive smart material .关键词
有机凝胶/酰腙/自组装/选择性/氟离子Key words
organogel/acyl hydrazone/self-assemble/selectivity/fluoride ion分类
化学化工引用本文复制引用
张有明,李海龙,杨青平,吴贵渊,魏太保..对氟离子选择性识别的小分子有机凝胶的合成[J].西北师范大学学报（自然科学版）,2015,(1):53-60,8.基金项目
国家自然科学基金资助项目 （）
