A Smart Fluorescent Probe Based on Salicylaldehyde Schiff's Base with AIE and ESIPT Characteristics for the Detections of N2H4 and ClO

Ya Xie; Liqiang Yan; Yujian Tang; Minghui Tang; Shaoyang Wang; Li Bi; Wanying Sun; Jianping Li

doi:10.1007/s10895-019-02348-6

A Smart Fluorescent Probe Based on Salicylaldehyde Schiff's Base with AIE and ESIPT Characteristics for the Detections of N₂H₄ and ClO

J Fluoresc. 2019 Mar;29(2):399-406. doi: 10.1007/s10895-019-02348-6. Epub 2019 Jan 24.

Authors

Ya Xie¹, Liqiang Yan², Yujian Tang¹, Minghui Tang¹, Shaoyang Wang¹, Li Bi¹, Wanying Sun¹, Jianping Li³

Affiliations

¹ College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi, 541004, People's Republic of China.
² College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi, 541004, People's Republic of China. liqiangyan@glut.edu.cn.
³ Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, Guilin, Guangxi, 541004, People's Republic of China.

PMID: 30680508
DOI: 10.1007/s10895-019-02348-6

Abstract

Smart and versatile salicylaldehyde Schiff's bases have been proved their excellent performances including large shocks shift, dual emission wavelengths and sensitive to environment for fluorescence analysis. Herein, a simple salicylaldehyde Schiff's base molecular (PBAS) with aggregation-induced emission (AIE) and the excited-state intramolecular proton-transfer (ESIPT) effects was constructed for detecting N₂H₄ and ClO^-. The highly specific and sensitive response to N₂H₄ was witnessed by the fast turn-on of the strong blue fluorescence and to ClO^- was observed by the rapid turn off of the weak green fluorescence simultaneous decomposing of the probe. The results of mass spectrum analysis showed that probe PBAS decomposed under the influence of N₂H_4, whereas probe PBAS can complex with ClO^- and prevent effective ESIPT process. Benefiting from its high properties, this fluorescence molecular provides an effective tool for probing N₂H₄ and ClO^- in live cells.

Keywords: ClO−; Fluorescence probe; N2H4; Salicylaldehyde; Schiff’s bases.