Recyclable fluorescent chemodosimeters based on 8-hydroxyquinoline derivatives for highly sensitive and selective detection of mercury(II) in aqueous media and test strips.

Authors:
Shaomin Ji
Shaomin Ji
Dalian University of Technology
China
Wenjin Ji
Wenjin Ji
Guangdong General Hospital
Qi Li
Qi Li
Shuguang Hospital
Yingkou Shi | China
Yanping Huo
Yanping Huo
Anhui University of Technology
China

Spectrochim Acta A Mol Biomol Spectrosc 2019 Jul 4;218:196-205. Epub 2019 Apr 4.

School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China. Electronic address:

Four novel highly selective 8-hydroxyquinoline-based fluorescent chemodosimeters (1-4) were synthesized for the rapid analysis of Hg in aqueous solution and on paper strips, which probably attributed to the excited state intramolecular proton transfer (ESIPT) process. Chemodosimeter 1 was evaluated as a Hg-ratiometric fluorescent sensor while others (2, 3 and 4) displayed fluorescence turn-on response for Hg among the various survey metal ions. We demonstrated that chemodosimeters (1-4) could recognized Hg ions based on a 1:1 stoichiometric binding event with fast detection time. More importantly, the detection limits for Hg could reach at 10 M level except chemodosimeter 1 (4.05 × 10 M). In addition, it was found that chemodosimeters (1-4) were recycled efficiently because the Hg induced emission spectra were reversed after adding NaBH. Finally, these four sensors were successfully applied for fabrication of simple device test strips for rapid and on-site detection of Hg ions.

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S13861425193037
Publisher Site
http://dx.doi.org/10.1016/j.saa.2019.04.004DOI Listing
July 2019
6 Reads

Publication Analysis

Top Keywords

chemodosimeters 1-4
12
test strips
8
fluorescent chemodosimeters
8
based stoichiometric
4
ions based
4
recognized ions
4
demonstrated chemodosimeters
4
1-4 recognized
4
binding event
4
detection time
4
time importantly
4
fast detection
4
event fast
4
ions demonstrated
4
stoichiometric binding
4
survey metal
4
chemodosimeter evaluated
4
evaluated hg-ratiometric
4
process chemodosimeter
4
esipt process
4

Similar Publications