Tryptanthrin incorporated spiropiperidine derivative as a fluorescent chemosensor for picric acid detection

IF 4.3 2区化学 Q1 SPECTROSCOPY

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-04-28 DOI:10.1016/j.saa.2025.126311

Haitham K.R. Al-Sharifi , Devika Krishnan , E.G. Jayasree , Ani Deepthi

引用次数: 0

Abstract

The photophysical properties of a previously synthesized tryptanthrin incorporated spiropiperidine molecule (CTSP) is described. Studies revealed that the fluorescence of the compound gets significantly quenched by addition of picric acid (PA). The selectivity, anti-interference and quenching mechanistic studies are also described. The quenching mechanism was largely attributed to photo-induced electron transfer (PET) process facilitated by a strong electrostatic interaction between the protonated NH₂ group of CTSP and PA. Additionally, pH variations significantly influenced the quenching efficiency, with the highest response observed at neutral pH. These findings demonstrate that CTSP is a promising candidate for PA detection, with potential applications in environmental monitoring and security fields.

Abstract Image

查看原文本刊更多论文

色胺菊酯结合螺哌啶衍生物作为一种检测苦味酸的荧光化学传感器

描述了先前合成的色氨酸结合螺哌啶分子（CTSP）的光物理性质。研究表明，加入苦味酸（PA）后，化合物的荧光明显猝灭。并对其选择性、抗干扰性和猝灭机理进行了研究。猝灭机理主要是由于CTSP的质子化NH2基团与PA之间的强静电相互作用促进了光致电子转移（PET）过程。此外，pH值的变化显著影响了淬火效率，在中性pH值下观察到的响应最高。这些发现表明CTSP是一种很有希望的PA检测候选材料，在环境监测和安全领域具有潜在的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 物理-光谱学

CiteScore

8.40

自引率

11.40%

发文量

1364

审稿时长

40 days

期刊介绍： Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (SAA) is an interdisciplinary journal which spans from basic to applied aspects of optical spectroscopy in chemistry, medicine, biology, and materials science. The journal publishes original scientific papers that feature high-quality spectroscopic data and analysis. From the broad range of optical spectroscopies, the emphasis is on electronic, vibrational or rotational spectra of molecules, rather than on spectroscopy based on magnetic moments. Criteria for publication in SAA are novelty, uniqueness, and outstanding quality. Routine applications of spectroscopic techniques and computational methods are not appropriate. Topics of particular interest of Spectrochimica Acta Part A include, but are not limited to: Spectroscopy and dynamics of bioanalytical, biomedical, environmental, and atmospheric sciences, Novel experimental techniques or instrumentation for molecular spectroscopy, Novel theoretical and computational methods, Novel applications in photochemistry and photobiology, Novel interpretational approaches as well as advances in data analysis based on electronic or vibrational spectroscopy.