缩氨基硫脲受体的合成及阴离子识别规律研究  

Synthesis of thiosemicarbazone receptors and their anion recognition orderliness

作　　者：徐维霞[1] 马占营[1] 范广[1] 邓玲娟[1] 张有明[2] 魏太保[2] 

机构地区：[1]咸阳师范学院化学与化工学院,陕西咸阳712000 [2]西北师范大学化学化工学院甘肃省高分子材料重点实验室,甘肃兰州730070

出　　处：《化学研究与应用》2010年第8期1027-1031,共5页Chemical Research and Application

基　　金：陕西省自然科学基金(2009JQ2015)资助项目;陕西省教育厅专项基金(09JK798)资助项目;咸阳师范学院科研专项基金(06XSYK260)资助项目

摘　　要：设计合成了新型缩氨基硫脲受体分子,利用紫外-可见吸收光谱考察了其对F-,Cl-,Br-,I-,CH3COO-,HSO4-,H2PO4-和NO3-8种阴离子的识别作用。当加入F-,CH3COO-,H2PO4-时,溶液颜色立刻由无色转变为黄色,而加入其它阴离子则无变化,从而实现对这3种阴离子的裸眼检测。通过计算可知,两种受体分子对CH3COO-和H2PO4-的识别作用呈现出有规律的变化,即对同种阴离子:受体B1<受体B2,且主客体间形成1∶1的配合物。质子溶剂效应实验证明了受体分子与阴离子之间以氢键作用方式相结合。Two new thiosemicarbazone derivative receptors were designed and synthesized.The binding properties of the receptors with anions such as F-,Cl-,Br-,I-,CH3COO-,HSO4-,H2PO4-and NO3-in DMSO were investigated by UV-Vis spectroscopy.A clear color change was observed from colorless to yellow upon addition of F-,CH3COO-or H2PO4-to the solution of the two receptors in DMSO by the naked-eyes.The results showed that the two receptors had a better selectivity for F-,CH3COO-and H2PO4-,but had no evident binding with Cl-,Br-,I-,HSO4-,and NO3-.The results showed that the binding ability of the two receptors changed regularly with CH3COO-and H2PO4-.For the same anion,the association constants followed the trend：receptor B1receptor B2.The UV-Vis data indicated that a 1∶1 stoichiometry complex was formed between receptors and the three anions.The experiment using protic solvent provided evidence for the hydrogen-bond interaction between the receptors and anions.

关 键 词：缩氨基硫脲 合成 阴离子识别 氢键作用 

分 类 号：O621.36[理学—有机化学]