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Exploration of ESIPT in 4,6‐ O ‐Ethylidene‐ N ‐(2‐hydroxybenzylidene)‐β‐D‐glucopyranosylamine and Its Application in Selective Turn‐on Response Toward Lu(III) ion

Year: 2025

Type: article

Abstract: 4,6‐ O ‐Ethylidene‐ N ‐(2‐hydroxybenzylidene)‐β‐D‐glucopyranosylamine (PL1) exhibits excited state intramolecular proton transfer (ESIPT) mechanism, which has been established by experimental and theoretical calculations. Further, PL1 selectively interacts with Lu 3+ ion yielding a turn‐on response in methanol, where the emission intensity of the former enhances (~15 fold) after metal ion interaction. The complexation has been investigated using various analytical tools like UV‐visible absorption/emission, nuclear magnetic resonance spectroscopy and lifetime studies. The relative quantum yield of PL1 (0.0043) enhances to 0.1025 upon interaction with the Lu 3+ ion. The studies on stoichiometry by Job's plot, ESI mass spectrometry and density functional theory calculations revealed the ligand‐to‐metal interaction in 2 : 1 ratio.

Source: Chemistry - An Asian Journal

DOI: 10.1002/asia.202401432

Authors: Parmeshthi Parikh, Anuvasita Parikh, Santosh Kumar Mishra, Vimal Kumar Madduluri, Ajay K. Sah

Institution: Birla Institute of Technology and Science, Pilani

Language: English

Topic: Molecular Sensors and Ion Detection

Subfield: Spectroscopy

Field: Chemistry

Domain: Physical Sciences

Open Access status: bronze

Funders: Department of Science and Technology, Ministry of Science and Technology, India, Birla Institute of Technology and Science, Pilani

OpenAlex ID: W4407987363

FWCI:

Cites: 43

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Related to: 10