Carbon Quantum Dots Based Chemosensor Array for Monitoring Multiple Metal Ions

Molecules

Song Guo¹  Tianlei Qin¹  Jiayi Wang¹  Yuanli Liu¹ 

[1] Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China;

关键词: chemosensor array;    metal ions;    fluorescence;    carbon quantum dots;    amino acids;   

DOI  :  10.3390/molecules27123843

来源: DOAJ

【 摘 要 】

The simultaneous identification of multiple metal ions in water has attracted enormous research interest in the past few decades. We herein describe a novel method for multiple metal ion detection using a carbon quantum dots (CQDs)-based chemosensor array and the CQDs are functionalized with different amino acids (glutamine, histidine, arginine, lysine and proline), which act as sensing elements in the sensor array. Eleven metal ions are successfully identified by the designed chemosensor array, with 100% classification accuracy. Importantly, the proposed method allowed the quantitative prediction of the concentration of individual metal ions in the mixture with the aid of a support vector machine (SVM). The sensor array also enables the qualitative detection of unknown metal ions under the interference of tap water and local river water. Thus, the strategy provides a novel high-throughput approach for the identification of various analytes in complex systems.

【 授权许可】

Unknown