1,8-萘二酰亚胺的合成及对阴阳离子的识别研究

Synthesis of 1,8-naphthalene Dicarboxylic Imide and Its Recognition Abilityto the Anion and Cation

本文以1,8萘二甲酸酐和乙二胺为原料合成了荧光主体1,8萘二酰亚胺,通过FR-IR、1H NMR和元素分析方法对产物进行了表征,采用荧光光谱方法检测了荧光主体与不同阴离子(CO32-、Br-、HSO42-、I-、Cl-、SO42-、F-)和阳离子(Ni2+、Mg2+、Mn2+、Cr3+、Zn2+、Cu2+、Na+、K+)的识别作用。结果表明:识别主体能与F-和Ni2+发生配位识别作用。其中F-可以使荧光主体的荧光强度显著降低,而Ni2+能使其荧光强度显著增强,通过加入不同摩尔配比的配体确定了荧光主体与F-和Ni2+的最佳识别配比分别为1∶9和1∶1。

In this article,1,8-naphthalene dicarboxylic imide as a fluorescent subject was synthesized via the reaction of 1,8-naphthalene dicarboxylic anhydride and thylenediamine.The products were characterized by FR-IR、1H NMR and elemental analysis.The recognition ability of resultant fluorescent subject to various anions（CO32-,Br-,HSO42-,I-,Cl-,SO42-and F-） and cations（Ni2＋,Mg2＋,Mn2＋,Cr3＋,Zn2＋,Cu2＋,Na＋and K＋） was examined by means of fluorescence spectrometry.The results showed that recognition interaction occurred between F-、Ni2＋and the fluorescent subject.The fluorescence intensity of the fluorescent subject was linearly dependent on the concentration of Ni2＋,and its fluorescence intensity was reduced significantly.The optimal molar ratio of the fluorescent subject to ligand was determinedas as 1∶9 and 1∶1 respectively.