荧光碳点基多通道传感器阵列快速鉴别金属离子  

Multicolor fluorescent carbon dots based sensor array for rapid identification of multiple metal ions

作　　者：高洁 廖俊宇 朱效华 刘美玲[1] 张友玉[1] 姚守拙[1] Jie Gao;Junyu Liao;Xiaohua Zhu;Meiling Liu;Youyu Zhang;Shouzhuo Yao(College of Chemistry and Chemical Engineering,Hunan Normal University,Changsha 410081,China)

机构地区：[1]湖南师范大学化学化工学院,长沙410081

出　　处：《中国科学：化学》2024年第12期2608-2615,共8页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(编号:22274048,22274045,22274047,21904039)资助项目。

摘　　要：传感器阵列也称为“电子鼻”,是模拟哺乳动物的嗅/味觉系统发展的一种传感体系,可以同时获取多维信息,在混合物鉴定中表现出明显的优势,显著提高分析效率.本文利用三色荧光碳点同时作为识别单元和信号报告单元,开发了一种多通道传感器阵列用于区分复杂体系中金属离子.分别以柠檬酸为碳源,通过改变合成方法与功能单体合成三种荧光碳点,三种碳点表现出互不干扰的荧光,并且三种碳点表面含有不同的官能团,与金属离子发生不同的相互作用,进而产生不同的荧光响应.通过多元统计技术识别数据集,可成功区分14种金属离子.此外,构建的传感器阵列可成功区分二元、三元、四元金属离子混合物,并且可用于区分血清、唾液以及环境水样中金属离子.Array-based sensor“chemical nose/tongue”platforms are inspired by the mammalian olfactory.It can obtain multidimensional information showing significant advantages in mixture identification and significantly improving analytical efficiency.Herein,we developed a multichannel sensor array for distinguish metal ions in complex systems based on three color fluorescent carbon dots(CDs)as both recognition units and signal reporting units,simultaneously.Three color fluorescent CDs were synthesized by using citric acid as carbon source with changing the synthesis method and functional monomers.The emission wavelength of the three CDs is independent of the excitation wavelength,and their surfaces contain different functional groups that interacted with metal ions to varying degrees,resulting in different fluorescence responses.By using multivariate statistical techniques to identify the dataset,14 types of metal ions can be distinguished.In addition,the array sensor can successfully distinguish binary,ternary,and quaternary metal ion mixtures,and can also successfully distinguish 14 metal ions in complex systems such as serum,saliva,and environmental water samples.

关 键 词：传感器阵列 多通道 碳点 金属离子 

分 类 号：O657.3[理学—分析化学] TP212[理学—化学]