Both visual and fluorescent sensors for Zn(2+) based on bis(pyrrol-2-yl-methyleneamine) platform

Wei-Na Wu; Pan-Dong Mao; Lei Jia; Yuan Wang; Zhou-Qing Xu

doi:10.1016/j.saa.2016.05.014

Both visual and fluorescent sensors for Zn(2+) based on bis(pyrrol-2-yl-methyleneamine) platform

Spectrochim Acta A Mol Biomol Spectrosc. 2016 Sep 5:166:44-48. doi: 10.1016/j.saa.2016.05.014. Epub 2016 May 13.

Authors

Wei-Na Wu¹, Pan-Dong Mao¹, Lei Jia¹, Yuan Wang², Zhou-Qing Xu³

Affiliations

¹ Department of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, PR China.
² Department of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, PR China. Electronic address: wangyuan08@hpu.edu.cn.
³ Department of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, PR China. Electronic address: zhqxu@hpu.edu.cn.

PMID: 27208758
DOI: 10.1016/j.saa.2016.05.014

Abstract

Two bis(pyrrol-2-yl-methyleneamine) chemo-sensors, 1, 3- and 1, 4-bis[3,4-dimethyl-5-ethyloxy -carbonyl-pyrrol-2-yl-methyleneamine]benzene (H2L(1) and H2L(2), respectively) have been synthesized and characterized, which exhibit high selectivity as off-on fluorescence sensors toward Zn(2+) in CH3CN/H2O (9:1, v/v) solution. The detection limits of both sensors are at the parts per million level. Moreover, the probes H2L(1) and H2L(2) could sense Zn(2+) by "naked eye" with a color change from colorless to yellow, and from yellow to dark yellow, respectively. To test the practical use of the probes, the determination of Zn(2+) in real water samples was also evaluated.

Keywords: Colorimetric sensor; Fluorescent sensor; Pyrrole; Schiff base; Zn(2+) ion.

Publication types

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