席夫碱红色荧光探针的合成及对乙醇的识别  

Synthesis of Schiff base Red Fluorescent Probes and Identification of Ethanol

作　　者：迟浩波 刘宗瑜 任彬 陈姿匀 李志英[1] CHI Hao-bo;LIU Zong-yu;REN Bin;CHEN Zi-yun;LI Zhi-ying(Department of Chemistry,Xinzhou Normal University,Xinzhou 034000,China)

机构地区：[1]忻州师范学院化学系,山西忻州034000

出　　处：《化学试剂》2024年第10期58-62,共5页Chemical Reagents

基　　金：山西省大学生创新创业训练计划立项项目(20230942)。

摘　　要：饮酒在中国人的生活中,有着悠久的历史文化和传统,在很多场合有重要地位,然而过度饮酒则可酿成大祸。以聚乙烯吡咯烷酮(PVP)和对苯二胺(PPDA)为原料微波辅助合成发射红色荧光的席夫碱,用此席夫碱为荧光探针对乙醇进行了检测。用荧光光谱、紫外光谱和红外光谱对席夫碱进行了表征,原料和席夫碱的荧光光谱和紫外光谱都不同,红外光谱图在1624 cm-1处出峰说明生成了聚合席夫碱,席夫碱在激发波长为511 nm下,发射608 nm红色的荧光。在pH 7的溶液中席夫碱荧光探针随着乙醇的加入荧光增强,增强程度在一定范围内呈线性关系,建立了一种测定乙醇含量的新方法。该方法的线性范围为10%~80%。操作方便,简单,可视化乙醇的含量。Drinking has a long history culture and tradition in the life of the Chinese people,and plays an important role in many occasions,but excessive drinking can cause great disasters.The Schiff base emitting red fluorescence was synthesized by microwave-assisted using polyvinylpyrrolidone(PVP)and p-phenylenediamine(PPDA)as raw materials.Schiff base was used as fluorescent probe for the detection of ethanol.Schiff base was characterized by fluorescence spectra,UV spectra and infrared spectra.Fluorescence and ultraviolet spectra of the raw materials and Schiff bases are different.The peakat 1624 cm-1 in infrared spectrum indicated that Schiff base was generated,along with an emission wavelength of 608 nm and an excitation wavelength of 511 nm.In pH 7 solution,the fluorescence of Schiff base probe was enhanced with the addition of ethanol,and the enhancement degree was linear with the contentraion of ethanol in a certain range.In conclusion,a method for the determination of ethanol content was established,and the linear range was 10%~80%.This method is convenient and simple for the visualization of ethanol content.

关 键 词：席夫碱 聚乙烯吡咯烷酮 荧光探针 对苯二胺 乙醇 

分 类 号：O65[理学—分析化学]