Issue 58, 2018, Issue in Progress

A simple and highly selective 1,2,4,5-tetrazine-based colorimetric probe for HSO3 ion recognition in food

Abstract

A series of 3,6-bis-substituted-1,2,4,5-tetrazine-based colorimetric probes has been developed in good yields that exhibits highly selective and sensitive colorimetric recognition of HSO3 in aqueous solution. The color of the solution containing colorimetric probes changed markedly from orange to colorless, upon the addition of HSO3. Quantification of the absorption titration analysis shows that the detection limit of 3,6-bis(2-aminoethylamino)-1,2,4,5-tetrazine (2a) for HSO3 was 3.8 μM. It was noted that 3,6-bis-substituted-1,2,4,5-tetrazine-based colorimetric probes have a specific response toward HSO3 without interference from other 17 different anions and 16 common cations. A plausible mechanism was proposed by high-resolution mass spectroscopy analysis and NMR spectrometry analysis, involving the nucleophilic reaction of a bisulfite anion with the tetrazine ring and free radical rearrangement of ·SO3H. Moreover, probes 2a–2c possessed applicability for sensing bisulfite in actual food samples. Therefore, the present work established a novel strategy for investigating bisulfite in food or other products.

Graphical abstract: A simple and highly selective 1,2,4,5-tetrazine-based colorimetric probe for HSO3− ion recognition in food

Supplementary files

Article information

Article type
Paper
Submitted
03 Jul 2018
Accepted
21 Sep 2018
First published
28 Sep 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 33459-33463

A simple and highly selective 1,2,4,5-tetrazine-based colorimetric probe for HSO3 ion recognition in food

J. Lu, P. Wu, Y. Geng and J. Wang, RSC Adv., 2018, 8, 33459 DOI: 10.1039/C8RA05682J

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements