Excited-state intramolecular proton transfer (ESIPT) salicylaldehyde Schiff bases: ratiometric sensing of ammonia and biologically relevant ions in solution and solid state
- Title
- Excited-state intramolecular proton transfer (ESIPT) salicylaldehyde Schiff bases: ratiometric sensing of ammonia and biologically relevant ions in solution and solid state
- Creator
- Joy F.; V A.; Devasia J.; Nizam A.
- Description
- The intricate molecular architecture of ESIPT salicylaldehyde Schiff bases facilitates dynamic processes, inducing tunable photoluminescent properties. Notably, their halochromic nature, exhibiting colour changes in response to external stimuli, adds a vibrant dimension to their molecular repertoire. This sensitivity extends to environmental factors, making them valuable indicators for alterations in surroundings. The compound (E)-N-(3,5-dibromo-2-hydroxybenzylidene)-4-methylbenzohydrazide (PTBH) demonstrates exceptional sensitivity to ammonia, enabling real-time detection (LOD = 0.14 nM) in both solution (ratiometric) and the solid state. Moreover, their metal chelation capability allows simultaneous sensing of Mg2+ and Fe2+ ions, addressing environmental hazards. Exploiting molecular recognition, the fluorescent probe serves as sensors for amino acids, opening new avenues in biomedical diagnostics. The study introduces a novel solid-state emissive Schiff base, highlighting its stimuli-responsive photoluminescent properties and diverse applications, emphasising its potential in intelligent fluorescent materials for analytical and sensing technologies. 2024 Informa UK Limited, trading as Taylor & Francis Group.
- Source
- Supramolecular Chemistry, Vol-34, No. 46002, pp. 507-519.
- Date
- 2023-01-01
- Publisher
- Taylor and Francis Ltd.
- Subject
- ESIPT; halochromic; molecular recognition; ratiometric; Schiff base
- Coverage
- Joy F., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bangalore, India; V A., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bangalore, India; Devasia J., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bangalore, India; Nizam A., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bangalore, India
- Rights
- Restricted Access
- Relation
- ISSN: 10610278; CODEN: SCHEE
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Joy F.; V A.; Devasia J.; Nizam A., “Excited-state intramolecular proton transfer (ESIPT) salicylaldehyde Schiff bases: ratiometric sensing of ammonia and biologically relevant ions in solution and solid state,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/14413.