Development of aryl 2-pyridinone-fused 2-pyrimidone as a TICT-based turn-off fluorescent probe for ultra-low pH sensing

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2025-04-01 DOI:10.1016/j.dyepig.2025.112795

Chen Zhu , Jinfeng Zhang , Tianxing Li, Hui Jin, Lixin Zhang

引用次数: 0

Abstract

An aryl 2-pyridinone-fused 2-pyrimidone, PPDO, was developed as a TICT-based fluorescent probe for detecting extreme acidity within a narrow pH range (from pH 2.5 to 1.0). Upon the addition of HCl, PPDO exhibits fluorescence quenching at 480 nm. Density functional theory (DFT) calculations and ¹H NMR spectroscopy reveal that the detection mechanism is probably governed by an enhanced electron push-pull effect and increased steric hindrance, which modulate the TICT process. This probe offers several advantages, including a large Stokes shift, high sensitivity, excellent selectivity, and rapid response time.

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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.