含水体系中选择性识别Ac^-受体的合成及其对阴离子的识别研究  

Synthesis of receptors of selective recognition for acetate in aqueous media and their anion recognition properties

作　　者：朱丽君[1] 

机构地区：[1]兰州教育学院自然科学系,甘肃兰州730020

出　　处：《西北师范大学学报（自然科学版）》2011年第4期69-73,共5页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(21064006)

摘　　要：设计合成了2种尚未见文献报道的N-芳基-N-′(2-乙酰氧基苯甲酰基)硫脲类衍生物受体5a和5b.利用紫外-可见吸收光谱考察了其在DMSO及DMSO/H2O溶液中与F-,Cl-,Br-,I-,Ac-,H2PO4-,HSO4-,ClO4-等阴离子客体的识别作用.结果表明,5a和5b都能对F-,Ac-和H2PO4-有识别效果,但当向5b中加入这3种阴离子后,溶液颜色均由无色变为亮黄色,而加入其他离子时无此现象,从而实现了5b对F-,Ac-和H2PO4-的裸眼检测.通过改变含水量,发现5b在20%的含水体系中能对Ac-有很好的专一选择性识别作用.利用1HNMR滴定实验进一步证实受体分子5b通过氢键作用形成主客体配合物.Two new kinds of N-aryl-N′-（2-ethanoylhydroxybenzoyl）thiourea receptors have been designed and synthesized.The anion recognition properties for the sensors using anions such as F^-,Cl^-,Br^-,I^-,Ac-,H2PO^-4,HSO-4 and ClO^-4 in DMSO and DMSO/H2O solvents are evaluated by UV-Vis.A clear color change in 5b is observed from colorless to light yellow upon addition of F^-,Ac^-and H2PO-4.At the same time,it can be efficiently selective to Ac^-in VH2O∶VDMSO=20∶80.The 1HNMR titrations confirm hydrogen bonding interactions between the sensor of 5b and anions.

关 键 词：硫脲 阴离子识别 裸眼检测 氢键 

分 类 号：O626[理学—有机化学]