生物亚茚-3,10,30-三酮:一种有趣的溶色分子及其在视觉 pH 值检测和二氯甲烷鉴定中的应用

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-06-07 DOI:10.1007/s10953-024-01386-4
Su-qian Cai, Xiao-hua Cai, Ke-feng Zhang
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摘要

由于在食品、环境和生物系统等多个领域发挥着重要作用,开发用于监测 pH 变化的高灵敏度可视分析方法一直备受关注。本文以底物茚-1,3-二酮为原料,合成了一种用于 pH 值检测的双响应传感器--[1,2']双茚-3,1',3'-三酮 L,并通过 1H NMR、13C NMR、ESI-MS 和单晶确认了其结构。有趣的是,基于分子内质子转移(IPT)机制,传感器 L 在不同的杨树溶液中表现出溶解变色特性和可视化颜色变化,在中等酸性(pH = 3.52-5.03)和强碱性(pH = 13.09-13.27)条件下,其荧光强度、紫外-可见吸光度和颜色都会发生显著变化。这些结果表明,L 可作为双功能探针,在相当窄的 pH 值范围内分析和目测中等酸性和强碱性条件下的 pH 值变化。此外,L 还能通过诱导较大的波长蓝移和荧光强度的增加来选择性地识别溶剂 CH2Cl2,这意味着它可用作监测痕量 CH2Cl2 的指示剂。此外,还研究了传感器 L 的强效应用,发现它可以方便地制成一系列条状,用于 pH 值检测。
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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Biindenylidene-3,10,30-trione: An Interesting Solvatochromic Molecule and Its Applications for Visual pH Detection and DCM Identification

The development of highly sensitive and visual analytical methods for monitoring pH change has always attracted great attention due to significant roles in various fields including food, environmental and biological systems. In this paper, a dual-response sensor for pH detection, [1,2']biindenylidene-3,1',3'-trione L, was synthesized from substrate indane-1,3-dione, and its structure was confirmed by 1H NMR, 13C NMR, ESI–MS and single crystals. Interestingly, sensor L exhibits solvatochromic properties and visualized color changes at different poplar solutions, and it can show significant changes in fluorescence intensity, UV–Vis absorbance and color at moderate acidic (pH = 3.52–5.03) and strong basic conditions (pH = 13.09–13.27) based on intramolecular proton transfer (IPT) mechanism. These results indicate that L can act as a double functional probe for the analysis and visual detection of pH change under moderate acidic and strong basic conditions in a quite narrow pH range. In addition, L can also selectively identify solvent CH2Cl2 by inducing larger blue-shift in wavelength and increase in fluorescence intensity, which means that it may be used as an indicator for monitoring trace amount of CH2Cl2. The potent applicantions for sensor L were also investigated and that it could conveniently be made into a series of strips for pH detection was indicated.

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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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