ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7

Published monthly
 

Highly sensitive and selective fluorescence chemosensors containing phenanthroline moieties for detection of Zn2+ and Cd2+ ions

Cong Quan, Jiayu Liu, Wei Sun, and Xinjian Cheng

Wuhan Institute of Technology, Wuhan, China

 

E-mail: chxj606@163.com

Abstract: It is extremely necessary to detect heavy metals sensitively and selectively, especially the ions that will cause great harm to humans and the environment. This work deals with two fluorescent chemosensors and their outstanding role when detecting Zn2+ and Cd2+ ions. First, a small molecular chemosensor (TPB) has been designed and synthesized via Suzuki reaction using one part of benzene-1,3,5-triyltriboronic acid and three parts of 2-bromo-1, 10-phenanthroline as starting materials. And then, its corresponding macromolecular fluorescent chemosensor (PTPB) was synthesized. The infrared spectra, mass spectrometry (MS), and 1H-NMR were used to study the structures of TPB and PTPB. From what has been studied, the TPB and PTPB were stable in a relative wide pH range. As soon as the Cd2+ and Zn2+ ions added, fluorescence of the two sensors TPB and PTPB was changed obviously. In addition, PTPB was found have better performance to both Cd2+ and Zn2+ than TPB through the ‘‘molecular wire’’ mechanism. Job’s plots were also be tested, showing that the combination ratio of TPB and PTPB to Cd2+ and Zn2+ were both 3:1 (ion/sensor). In addition, the minimum detection limits of the macromolecular chemosensor PTPB for Cd2+ and Zn2+ reached 0.424 μM and 1.27 μM, respectively.

Keywords: Fluorescence chemosensors ; Heavy metal ions ; Cd2+ and Zn2+ detection 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-019-00893-9

 

Chemical Papers 74 (2) 485–497 (2020)

Friday, April 12, 2024

IMPACT FACTOR 2021
2.146
SCImago Journal Rank 2021
0.365
SEARCH
Advanced
VOLUMES
European Symposium on Analytical Spectrometry ESAS 2022
© 2024 Chemical Papers