A ''naked-eye'' colorimetric and ratiometric fluorescence probe for trace hydrazine

Author:

Wu, Cuiyan  Xu, Hai  Li, Yaqian  Xie, Ruihua  Li, Peijuan  Pang, Xiao  Zhou, Zile  Li, Haitao  Zhang, Youyu  

Journal:

ANALYTICAL METHODS

Issue Date:

2019

Abstract(summary):

Hydrazine (N2H4) is widely used in industry but also very toxic. Herein, we describe the preparation of a "naked-eye" colorimetric and ratiometric fluorescent probe (DH), bearing alpha,beta-unsaturation carbonyl group as a recognition site, and employ it for the excited-state intramolecular proton transfer based (ESIPT-based) detection of N2H4. The probe can detect N2H4 by colorimetric and ratiometric fluorescence dual signals with high sensitivity and selectivity; the detection limit of N2H4 was 0.063 mu M (2.01 ppb), which was far below the safety level (10 ppb) stated by the U.S. Environmental Protection Agency (EPA). It enables "naked-eye" detection for hydrazine determination in aqueous solution. More importantly, we successfully applied DH to detect N2H4 in real water samples, indicating its potential utility for N2H4 sensing in environmental samples.

Page:

2591---2596