Design of a novel coumarin-based multifunctional fluorescent probe for Zn²⁺/Cu²⁺/S²⁻ in aqueous solution

Jing-Can Qin; Zheng-Yin Yang

doi:10.1016/j.msec.2015.07.064

Design of a novel coumarin-based multifunctional fluorescent probe for Zn²⁺/Cu²⁺/S²⁻ in aqueous solution

Mater Sci Eng C Mater Biol Appl. 2015 Dec 1:57:265-71. doi: 10.1016/j.msec.2015.07.064. Epub 2015 Aug 4.

Authors

Jing-Can Qin¹, Zheng-Yin Yang²

Affiliations

¹ College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, PR China.
² College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, PR China. Electronic address: yangzy@lzu.edu.cn.

PMID: 26354263
DOI: 10.1016/j.msec.2015.07.064

Abstract

A multifunctional fluorescent chemosensor 7-(diethylamino)-coumarin-3-carbaldehyde-(2'-methylquinoline-4'-formyl) hydrazone (HL) has been designed and synthesized. The sensor shows significant fluorescence enhancement in the presence of Zn(2+), which might be mainly due to the restricted -CN isomerization process. In contrast, the fluorescence of the sensor is quenched by Cu(2+) attributed to the inherent paramagnetic species. More interestingly, the 'in situ' prepared L-Cu exhibits a selective response to S(2-) based on reversible formation-separation of complex L-Cu and CuS.

Keywords: Copper; Fluorescent sensor; Multifunctional; Sulfide; Zinc.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Copper / analysis*
Coumarins / analysis
Coumarins / chemistry*
Environmental Monitoring / methods
Fluorescent Dyes / chemical synthesis
Molecular Probe Techniques
Reproducibility of Results
Sensitivity and Specificity
Spectrometry, Fluorescence / methods*
Sulfur / analysis*
Water / chemistry*
Water Pollutants, Chemical / analysis
Zinc / analysis*

Substances

Coumarins
Fluorescent Dyes
Water Pollutants, Chemical
Water
Sulfur
Copper
coumarin
Zinc