A simple and efficient chemodosimeter for colorimetric and “turn-on” fluorescent detection of sulphite in aqueous solution

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-08-29 DOI:10.1016/j.jphotochem.2024.115991

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Abstract

Described in this article the design and synthesis of a simple fluorogenic and chromogenic chemodosimeter C for sensitive and selective detection of sulphite via the 1,4-Michael addition reaction. This chemodosimeter demonstrated high SO₃²⁻ selectivity over other twenty-three competitive analytes in ∼100 % aqueous solution. Chemodosimeter C revealed a 35-fold “turn-on” fluorescence enhancement towards sulphite ions, as well as fluorometric color change from colorless to cyan. The chemodosimeters’ detection limit for sulphite ions was determined to be 0.782 µM. The sensing mechanism was established using ¹H NMR titration, HRMS, and theoretical calculations. Additionally, convenient chemodosimeter C-based test strips and C-treated silica gel were developed for rapid on-site visual detection of sulphite ions.

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用于水溶液中亚硫酸盐比色和 "开启 "荧光检测的简单高效化学计量器

本文介绍了通过 1,4-Michael 加成反应灵敏、选择性地检测亚硫酸盐的简单荧光和色度化学计量器 C 的设计和合成。在 ∼100 % 的水溶液中，与其他 23 种竞争性分析物相比，该化学计量器具有很高的 SO32- 选择性。化学计量器 C 对亚硫酸根离子的荧光增强了 35 倍，荧光颜色也从无色变为青色。化学计量器对亚硫酸根离子的检测限被确定为 0.782 µM。利用 1H NMR 滴定、HRMS 和理论计算确定了传感机制。此外，还开发了方便的基于 C 的化学计量器试纸和经过 C 处理的硅胶，用于现场快速目测亚硫酸根离子。

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.