中文摘要：

以1-（2-氯苯基）-2-（2,3-二甲氧基苯基）-乙二酮、水杨酰肼为原料合成了一种新型的离子荧光探针苯甲酰双腙类衍生物BDH,化合物结构通过红外、氢谱、碳谱以及高分辨质谱进行确认。选择性实验表明,当以乙腈为溶液时,化合物BDH能够选择性地识别Cr^3＋。竞争性实验表明,当其他金属离子与Cr^3＋形成共存离子时,不影响BDH对Cr^3＋的检测作用,说明配体具有较强的抗干扰能力。荧光滴定实验表明,当Cr^3＋浓度范围在8×10^-7-5×10^-6mol/L时,Cr^3＋浓度与ΔF呈现较好的线性关系,线性拟合系数为0.996 95,检出限为1.19×10^-11mol/L。Job＇s Plot实验表明,BDH和Cr3＋以1∶1的形式配位。

英文摘要：

A novel Cr^3＋ fluorescent probe benzildihydrazone dericatives BDH for Cr^3＋ was synthesized via 1-（2-chlorophenyl）-2-（2,3-dimethoxyphenylethane）-1,2-dione,salicylhydrazide as raw materials.The structures were confirmed by IR,~1HNMR,~（13）CNMR,HR-MS.The compound BDH had an excellent special identification capacity for Cr^3＋ in acetonitrile,competiting experiment showed that it does not affect on the detection Cr^3＋,while another metal ions coexist with Cr^3＋,and this work indicates ligand BDH had a strong anti-interference ability,and fluorescence titration experiment exhibited the fluorescence intensity ΔF and the concentration of Cr^3＋show a better linear relationship and the linear correlation coefficient was 0.996 95,when the concentration range of Cr^3＋was 8×10~（-7）~5×10~（-6）mol/L.The detection limit was 1.19×10~（-11） mol/L.The Job＇s plot experiment showed that the complex of BDH and Cr^3＋was 1∶1.