A new sol-gel fluorescent sensor to track carbonyl compounds

IF 5.6 1区化学 Q1 CHEMISTRY, ANALYTICAL

Talanta Pub Date : 2024-07-18 DOI:10.1016/j.talanta.2024.126569

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Abstract

Carbonyl compounds are ubiquitous quality trackers that provide information about food product degradation as well as air and water pollution levels. In addition, they are used as biomarkers for medical diagnoses. With more user-friendly sensors, their fast detection and easy quantification are highly relevant. The synthesis, characterization, and performance assessment of a new sensor based on aniline fluorescence to monitor carbonyls in real time is reported. A cost-effective synthesis using a straightforward sol-gel process led to the construction of a nontoxic silica-based material with high porosity, which can be used with almost no sample preparation. The material exhibits a rapid (< 1 min) fluorescence decrease upon interaction with carbonyl groups. The limit of detection is as low as ca. 5 × 10⁻⁴ mol·L⁻¹ for hexanal, while fluorescence extinction occurs at much higher concentrations (5 × 10⁻¹·mol L⁻¹), which enables the sensor to be used with a very broad range of detection. Real-time monitoring is possible since the fluorescence loss correlates with the concentration of carbonyl moieties. The performance was validated in simulating as well as in real media, making this sensor suitable for use in a wide range of applications.

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跟踪羰基化合物的新型溶胶-凝胶荧光传感器

羰基化合物是无处不在的质量跟踪器，可提供有关食品降解以及空气和水污染程度的信息。此外，它们还被用作医疗诊断的生物标记物。随着传感器越来越方便用户使用，对它们的快速检测和简易定量就变得非常重要。本文报告了一种基于苯胺荧光的新型传感器的合成、表征和性能评估，以实时监测羰基化合物。通过采用简单的溶胶-凝胶工艺进行经济高效的合成，制备出了一种无毒、高孔隙率的硅基材料，几乎无需进行样品制备即可使用。该材料在与羰基相互作用时，荧光会迅速（1 分钟）减弱。己醛的检测限低至约 5 × 10-4 mol-L-1，而在更高浓度（5 × 10-1-mol-L-1）时就会发生荧光熄灭，这使得传感器的检测范围非常广泛。由于荧光损耗与羰基分子的浓度相关，因此可以进行实时监测。该传感器的性能在模拟介质和真实介质中都得到了验证，因此可以广泛应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Talanta 化学-分析化学

CiteScore

12.30

自引率

4.90%

发文量

861

审稿时长

29 days

期刊介绍： Talanta provides a forum for the publication of original research papers, short communications, and critical reviews in all branches of pure and applied analytical chemistry. Papers are evaluated based on established guidelines, including the fundamental nature of the study, scientific novelty, substantial improvement or advantage over existing technology or methods, and demonstrated analytical applicability. Original research papers on fundamental studies, and on novel sensor and instrumentation developments, are encouraged. Novel or improved applications in areas such as clinical and biological chemistry, environmental analysis, geochemistry, materials science and engineering, and analytical platforms for omics development are welcome. Analytical performance of methods should be determined, including interference and matrix effects, and methods should be validated by comparison with a standard method, or analysis of a certified reference material. Simple spiking recoveries may not be sufficient. The developed method should especially comprise information on selectivity, sensitivity, detection limits, accuracy, and reliability. However, applying official validation or robustness studies to a routine method or technique does not necessarily constitute novelty. Proper statistical treatment of the data should be provided. Relevant literature should be cited, including related publications by the authors, and authors should discuss how their proposed methodology compares with previously reported methods.