A new dibenzothiophene-based dual-channel chemosensor for cyanide with aggregation induced emission. Issue 43 (21st October 2019)

• Record Type: Journal Article
• Authors: Zou, Qiqi; Tao, Furong; Xu, Zhen; Ding, Yunqiao; Tian, Yan; Cui, Yuezhi
• Is Part Of: Analytical methods. Volume 11:Issue 43(2019)
• Page Start: 5553
• Page End: 5561
• Publication Date: 2019-10-21
• Subjects: Chemistry, Analytic -- Periodicals; Analytical biochemistry -- Periodicals; Chemical laboratories -- Standards -- Periodicals; 543.1905
• DOI: 10.1039/c9ay01806a
• Languages: English
• ISSNs: 1759-9660

Abstract

Abstract : A new dibenzothiophene-based barbituric acid derivative (DTB ) with an aggregation induced emission (AIE) effect was synthesized as a naked-eye colorimetric and fluorescent probe for CN − . Abstract : A new dibenzothiophene-based barbituric acid derivative (DTB ) with an aggregation induced emission (AIE) effect was synthesized as a naked-eye colorimetric and fluorescent probe for CN − . The UV-vis spectra and fluorescence spectra of DTB in a DMSO/H2 O mixture changed with different water fractions ( f w ). Nano-aggregates of DTB were formed with the strongest fluorescence emission when f w reached 99%. Furthermore, DTB expressed good selectivity and high sensitivity for CN − in 99% aqueous DMSO solution. The sensing mechanism of DTB for CN − was confirmed by 1 H NMR titration, HRMS spectra, Job's plot and DFT calculations. Furthermore, DTB detected CN − with a low detection limit (21.6 nM), wide pH range (4–10), high anti-interference ability and fast response time (10 s). Moreover, DTB -based test strips were prepared for CN − detection, and DTB could detect CN − in real water samples.