Receptor-free phenothiazine derivative as fluorescent probe for picric acid: Investigation of the inner filter effect channel

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Kathiravan, Arunkumar and Narayanan, Mahalakshmi and Asha Jhonsi, Mariadoss and Anbazhagan, Venkattappan (2023) Receptor-free phenothiazine derivative as fluorescent probe for picric acid: Investigation of the inner filter effect channel. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 303. p. 123166. ISSN 13861425

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Abstract

In this study, a highly fluorescent and receptor-free phenothiazine derivative (PDAB) was developed for detecting picric acid. Steady-state and time-resolved fluorescence studies were conducted to examine the excited-state behavior of PDAB with picric acid in solution. The PDAB probe showed remarkable selectivity and sensitivity toward picric acid with an extremely low detection limit of 9.82 nM. Time-resolved fluorescence quenching provided direct evidence of an inner filter effect-based sensing mechanism. Using the Parker equation, a comprehensive analysis was performed to correct the inner filter effect in picric acid sensing. Overall, these studies offer crucial insights into the sensing mechanism for picric acid detection. © 2023 Elsevier B.V., All rights reserved.

Item Type: Article
Subjects: Chemistry > Chemistry
Divisions: Arts and Science > Vinayaka Mission's Kirupananda Variyar Arts & Science College, Salem > Chemistry
Depositing User: Unnamed user with email techsupport@mosys.org
Last Modified: 01 Dec 2025 03:37
URI: https://vmuir.mosys.org/id/eprint/2112

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