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A CH-Controlled Colorimetric Probe Based on Anthracene Carboximide for Near-Infrared Cyanide Detection.
- Source :
-
Journal of fluorescence [J Fluoresc] 2021 Nov; Vol. 31 (6), pp. 1863-1869. Date of Electronic Publication: 2021 Sep 15. - Publication Year :
- 2021
-
Abstract
- A chemical sensor that can induce near-infrared red-shifted response represents a promising strategy for the design and development of anion probes. In this work, novel CH-controlled colorimetric probe 3 based on anthracene carboximide was developed for near-infrared detection of cyanide. Probe 3 consisted of CHCN binding site to anthracene carboximide fluorophore, and showed a significant visual change from yellow-green (535 nm) to deep violet (825 nm) with a larger redshift (≈ 290 nm) and fluorescence quenching at 480 nm and 520 nm upon interacting with cyanide. Job curves determined 1:1 binding stoichiometry of probe 3 with cyanide. Additonally, probe 3 detected cyanide ion conveniently in aqueous solution and could be reused after trifluoroacetic acid treatment. Colorimetric test paper was used to detect cyanide in aqueous solutions. The C-H deprotonation sensing mechanism was confirmed by <superscript>1</superscript> H NMR titration. The near-infrared detection of cyanide by CH-controlled probes was founded for the first time.<br /> (© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Details
- Language :
- English
- ISSN :
- 1573-4994
- Volume :
- 31
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Journal of fluorescence
- Publication Type :
- Academic Journal
- Accession number :
- 34524573
- Full Text :
- https://doi.org/10.1007/s10895-021-02816-y