Smartphone-assisted high sensitivity sensor for fluorescent colorimetric detection of trace water in food products

IF 3.2 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Inorganica Chimica Acta Pub Date : 2025-08-29 DOI:10.1016/j.ica.2025.122889

Xiangzheng Yu , Mengxu Jin , Ruijie Jiang , Yu Zhang , Yucun Liu , Yuan Wang

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引用次数: 0

Abstract

Water as an essential substance plays a vital role in human daily life, but the existence of water even at trace levels could be very detrimental to some chemical processes, industrial production and food safety. Hence, it is of immense importance to exploit new convenient methods for monitoring trace water with high sensitivity. Based on this, a simple acylhydrazone-derived molecule (E)-N′-(4-(diethylamino)-2-hydroxy benzylidene) benzohydrazide (DABH) had been synthesized and could selectively detect F⁻ through deprotonation reaction in anhydrous acetonitrile with low detection limit. The deprotonated system DABH·F exhibited ultrahigh sensitivity to trace water as well as the photophysical signaling and the color of the solution of DABH·F changed obviously in the presence of water. The response mechanism of DABH·F to water could be considered as reprotonation of DABH through reversible reaction with the detection limit of 0.0012 %. Due to the reversible response of DABH·F towards trace water, a reasonable logic gate was conceived at molecular level. In addition, the prepared DABH and DABH·F-incorporated paper strips could be used as repeatable ink-free writing fluorescent display material. Moreover, DABH·F was smoothly applied for water content analysis in food products such as table salt, white sugar and honey with high reliability. Conveniently, the qualitative monitoring of moisture in food products could be realized via a simple colorimetric analysis method with the assistance of smartphone software. This sensing system was testified to be a potential efficiency sensor for the on-site fast trace water detection and optimized the preparation strategy of water sensor.

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智能手机辅助的高灵敏度食品中微量水荧光比色检测传感器

水作为人类日常生活中必不可少的物质，发挥着至关重要的作用，但即使是微量的水的存在，也可能对某些化学过程、工业生产和食品安全造成非常不利的影响。因此，开发新的简便、灵敏的痕量水监测方法具有重要意义。在此基础上，合成了一种简单的酰基腙衍生分子(E)- n ' -（4-（二乙基氨基）-2-羟基苄基）苯并肼（DABH），该分子可在无水乙腈中通过脱质子反应选择性检测F -，检出限低。去质子化体系DABH·F对痕量水和光物理信号具有超高的敏感性，在水存在的情况下，DABH·F溶液的颜色发生了明显变化。DABH·F对水的响应机制可以认为是DABH通过可逆反应再增殖，检出限为0.0012%。由于DABH·F对微量水的可逆响应，在分子水平上设计了合理的逻辑门。此外，所制备的DABH和掺入DABH·f的纸条可以作为可重复的无墨书写荧光显示材料。此外，DABH·F可顺利应用于食盐、白糖、蜂蜜等食品中水分含量的分析，可靠性高。在智能手机软件的辅助下，通过简单的比色分析方法，可以方便地实现食品中水分的定性监测。验证了该传感系统是现场快速痕量水检测的潜在高效传感器，并优化了水传感器的制备策略。

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

Inorganica Chimica Acta 化学-无机化学与核化学

CiteScore

6.00

自引率

3.60%

发文量

440

审稿时长

35 days

期刊介绍： Inorganica Chimica Acta is an established international forum for all aspects of advanced Inorganic Chemistry. Original papers of high scientific level and interest are published in the form of Articles and Reviews. Topics covered include: • chemistry of the main group elements and the d- and f-block metals, including the synthesis, characterization and reactivity of coordination, organometallic, biomimetic, supramolecular coordination compounds, including associated computational studies; • synthesis, physico-chemical properties, applications of molecule-based nano-scaled clusters and nanomaterials designed using the principles of coordination chemistry, as well as coordination polymers (CPs), metal-organic frameworks (MOFs), metal-organic polyhedra (MPOs); • reaction mechanisms and physico-chemical investigations computational studies of metalloenzymes and their models; • applications of inorganic compounds, metallodrugs and molecule-based materials. Papers composed primarily of structural reports will typically not be considered for publication.