含噻二唑的间苯二甲酰基硫脲受体的合成和识别性能研究  

Synthesis and recognition properties for anions of the receptors based on 1,3-benzyldiacyl thioureas derivatives including thiadiazole

作　　者：任海仙[1] 王娜[1] 王迎进[1] 

机构地区：[1]忻州师范学院化学系,山西忻州034000

出　　处：《分子科学学报》2014年第2期153-156,共4页Journal of Molecular Science

基　　金：山西省高等学校科技创新项目资助(2013149)

摘　　要：设计合成了含噻二唑的间苯二甲酰基硫脲受体,并用紫外光谱研究了其对阴离子客体的识别性能.主体1a与F-和CH3COO-相互作用,主体吸收光谱发生一定变化,且主体溶液的颜色也有明显变化.而与Cl-,Br-,I-,HSO4-,H2PO4-和ClO4-作用,吸收光谱几乎没有变化.Job工作曲线表明1a与F-和CH3COO-形成1∶1络合物,紫外滴定光谱的结果经非线性拟合,计算出主客体结合的稳定常数.1 H NMR滴定实验进一步证明了受体分子与阴离子之间以氢键作用方式相结合.Three novel 1, 3-benzyldiacyl thiourea derivatives including thiadiazole were designed and synthesized. Their binding properties with anions in DMSO were studied by UV-vis and 1H NMR spectroscopy. The results showed that the receptor la can recognize F- and CH3COO- anions through hydrogen bonding in DMSO solutions. At the presense of F or CH3COO- , the solution col- or of la was changed. ^1 H NMR titration confirmed hydrogen bonding interaction between the receptor and the anions. Job curve indicates that a 1 ： 1 stoichiometry complex is formed between the receptor and the two kinds of anions. The molecular recognition ability was discussed in terms of the size and shape-fit as well as the recognition mode between host and guest molecules.

关 键 词：识别 紫外可见吸收光谱 络合作用 

分 类 号：O613[理学—无机化学]