Colorimetric and fluorometric bimodal amine chemosensor based on deprotonation-induced intramolecular charge transfer: Application to food spoilage detection.

Autor: Oh BM; Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea., Cho NY; Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea., Lee EH; Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea., Park SY; Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea., Eun HJ; Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea., Kim JH; Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea. Electronic address: jonghkim@ajou.ac.kr.
Jazyk: angličtina
Zdroj: Journal of hazardous materials [J Hazard Mater] 2024 Mar 05; Vol. 465, pp. 133150. Date of Electronic Publication: 2023 Dec 01.
DOI: 10.1016/j.jhazmat.2023.133150
Abstrakt: Amine derivatives are signature organic compounds generated from rotten protein food. Thus, sensitive detection of the presence of amines in protein foods can be a critical technique for monitoring their quality. In this study, we develop an organic chemosensor probe, 4-(2-(3-(dicyanomethylene)- 5,5-dimethylcyclohex-1-en-1-yl)vinyl)-N,N-diethylbenzenaminium chloride (DEAH), to effectively detect amines through discernible bimodal (colorimetric and fluorometric) changes. By exploiting the amine-triggered intramolecular charge transfer behavior, DEAH exhibits rapid color changes (<1 s) with an excellent detection limit (36.9 nM) and also fluorescence turn-on in response to amine gas. Moreover, it possesses detection capabilities in versatile conditions, including solutions, solids, and coated films, suggesting its practical applicability. In particular, DEAH shows dramatic color change from yellow to violet with exceptional color difference (△E ab ) over 98, repeatable usability, and excellent selectivity to amines. Based on these compelling advantages, we successfully demonstrate real-time monitoring of amine gas generated from spoiled protein foods using DEAH-coated films.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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