合成了一种新型的磺酰脲阴离子受体双-( 4'-硝基苯基) 磺酰脲，通过观察引入阴离子后受体溶液颜色的变化，实现了阴离子的裸眼检测，其中引入F^- 变为棕黄色，引入CH₃CO₂^- 变为淡黄色，引入其他阴离子( 如NO₃^- 、Br^- 、Cl^- 、HSO₄^- ) 受体溶液颜色则无明显的变化．通过紫外－ 可见分光光度滴定法确定了受体与一价阴离子的结合能力，计算结果表明，磺酰脲基对F^- 和CH₃CO₂^- 有较高的亲和力; Jobs 工作曲线表明受体与F^- 形成摩尔比为1∶2 的配合物． 最后通过测定甲醇对受体分子和F^- 配合物的紫外吸收光谱的影响，证明了受体分子与阴离子之间以氢键方式相结合．

A novel sulfonylurea anion receptor,namely bis-( 4'-nitro phenyl) sulfonylurea,was synthesized andapplied to the naked-eye detection of anions by observing the color change of receptor solution after the addition ofanions,and obvious color change of the solution,namely F^- -induced brown yellow or CH₃CO₂^- -induced lightyellow,was observed.However,the color slightly changed when such other anions as NO₃^- ,Br^- ,Cl^- and HSO₄^- were introduced in the solution.Afterwards,the binding ability of the receptor with mono-anions was tested bymeans of UV-vis spectrophotometry titration method,with rather strong affinity of sulfonylurea to F^- and CH₃CO₂^-being revealed. Jobs plot indicates that the receptor and F^- groups form a kind of complex with 1:2 stoichiometry.Moreover,the UV absorption spectra of methanol for the complex confirm that the receptor binds with anions withthe help of hydrogen bond.