非对称吲哚类方酸菁的合成及其对Cu^(2+)识别性能研究  

Study on synthesis of asymmetric indole squarylium and its recognition performance to Cu^(2+)

作　　者：赵苗 张雨哲 郑旭东 徐松[1] 李忠玉[1,2] Zhao Miao;Zhang Yuzhe;Zheng Xudong;Xu Song;Li Zhongyu(School of Petrochemical Engineering,Changzhou University,Changzhou 213164;School of Environmental and Safety Engineering,Changzhou University,Changzhou 213164)

机构地区：[1]常州大学石油化工学院,常州213164 [2]常州大学环境与安全工程学院,常州213164

出　　处：《化工新型材料》2021年第8期190-193,197,共5页New Chemical Materials

基　　金：国家自然科学基金(21876015)。

摘　　要：利用1,1,2-三甲基-1H-苯并[e]吲哚、碘乙烷和方酸合成一种非对称吲哚类方酸菁染料(HBIO),可有效识别去离子水中的Cu^(2+),并且不容易受到其他金属阳离子(Ba^(2+)、Ca^(2+)、Cd^(2+)、Na^(+)、Cr^(3+)、Zn^(2+)、Co^(2+)、K^(+)、Ag^(+)、Pb^(2+)、Ni^(2+)、Al^(3+)、Hg^(2+)、Mg^(2+)和Cu^(2+))的干扰。HBIO的荧光强度与Cu^(2+)的浓度在一定范围内可以呈现出良好的线性关系,其相关系数(R2)为0.9961,HBIO与Cu^(2+)的结合常数(Ka)约为7.961×10^(9)(L/mol)^(2)。此外,通过分析Job’s Plot图和红外光谱图,推测出HBIO与Cu^(2+)的络合比为2∶1。Synthesis of an asymmetric indole squarylium dye (HBIO)using 1,1,2-trimethyl-1H-benzo[e]indole,iodoethane and squaricacid,which can effectively recognize Cu^(2+)in deionized water,and it was not easily interfered by other metal cations(Ba^(2+),Ca^(2+),Cd^(2+),Na^(+),Cr^(3+),Zn^(2+),Co^(2+),K^(+),Ag^(+),Pb^(2+),Ni ^(2+),Al ^(3+),Hg^(2+),Mg^(2+)and Cu^(2+)).A good linear relationship was observed between the fluorescence intensity of HBIO and the concentration of Cu^(2+)in a certain range.The correlation coefficient R2 was 0.9961,the binding constant(Ka)of HBIO and Cu^(2+)was about 7.961×10^(9)(L/mol)^(2).In addition,it was speculated that the complex ratio of HBIO-Cu^(2+)was 2∶1 which by analyzing the Job’s Plot and FT-IR.

关 键 词：方酸菁染料 铜离子 荧光探针 

分 类 号：S150.252[农业科学—土壤学]