Imidazo[1,2-α]pyridine-based polarity and viscosity-dependent fluorescent probes and application in selective detection of 2,6-dichloro-4-nitroaniline

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2024-08-29 DOI:10.1016/j.dyepig.2024.112425

Yujie Zhu , Xuebo Sun , Yu Yuan, Xinran Zhao, Zewen Zhai, Bing Song, Wenjing Zhang, Xinju Zhu, Xin-Qi Hao

引用次数: 0

Abstract

Three novel organic fluorescent probes M1-M3 with different conjugation length have been designed and synthesized from readily available starting materials via concise procedures. The obtained carbonyl-substituted imidazopyridines M1-M3 exhibit viscosity- and polarity-dependent dual-responsive properties. Structural modulation indicates that the polarity and viscosity sensitivity of M1-M3 can be tuned by variation of conjugation length. Importantly, M1-M3 demonstrate sensing ability for 2,6-dichloro-4-nitroaniline (DCN) with high selectivity and sensitivity in THF with a limit of detection (LOD) of 189 ppb, 62 ppb, and 54 ppb, respectively. The luminescence quenching of the compounds is caused by photo-induced electron transfer.

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基于咪唑并[1,2-α]吡啶的极性和粘度依赖性荧光探针及其在 2,6-二氯-4-硝基苯胺选择性检测中的应用

我们设计并通过简洁的程序从容易获得的起始材料中合成了三种具有不同共轭长度的新型有机荧光探针 M1-M3。所获得的羰基取代咪唑吡啶 M1-M3 具有粘度和极性依赖的双重响应特性。结构调制表明，M1-M3 的极性和粘度敏感性可通过改变共轭长度来调整。重要的是，M1-M3 在四氢呋喃中对 2,6-二氯-4-硝基苯胺（DCN）具有高选择性和高灵敏度的传感能力，其检测限（LOD）分别为 189 ppb、62 ppb 和 54 ppb。化合物的发光淬灭是由光诱导电子转移引起的。

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

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.