NDLI: Self-Associated 1,8-Naphthalimide as a Selective Fluorescent Chemosensor for Detection of High pH in Aqueous Solutions and Their Hg<sup>2+</sup> Contamination.

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Self-Associated 1,8-Naphthalimide as a Selective Fluorescent Chemosensor for Detection of High pH in Aqueous Solutions and Their Hg²⁺ Contamination.

Content Provider	Europe PMC
Author	Said, Awad I. Staneva, Desislava Angelova, Silvia Grabchev, Ivo
Editor	Basova, Tamara
Copyright Year	2022
Abstract	A novel diamino triazine based 1,8-naphthalimide (NI-DAT) has been designed and synthesized. Its photophysical properties have been investigated in different solvents and its sensory capability evaluated. The fluorescence emission of NI-DAT is significantly impacted by the solvent polarity due to its inherent intramolecular charge transfer character. Moreover, the fluorescence emission quenched at higher pH as a result of photo-induced electron transfer (PET) from triazine moiety to 1,8-naphthalimide after cleaving hydrogen bonds in the self-associated dimers. Furthermore, the new chemosensor exhibited a good selectivity and sensitivity towards Hg²⁺ among all the used various cations and anions in the aqueous solution of ethanol (5:1, v/v, pH = 7.2, Tampon buffer). NI-DAT emission at 540 nm was quenched remarkably only by Hg²⁺, even in the presence of other cations or anions as interfering analytes. Job's plot revealed a 2:1 stoichiometric ratio for NI-DAT/Hg²⁺ complex, respectively.
Journal	Sensors (Basel, Switzerland)
Volume Number	23
DOI	10.3390/s23010399
PubMed Central reference number	PMC9824833
Issue Number	1
PubMed reference number	36616999
e-ISSN	14248220
Language	English
Publisher	Molecular Diversity Preservation International (MDPI)
Publisher Date	2022-12-30
Access Restriction	Open
Subject Keyword	diaminotriazine self-assembly 1,8-naphthalimide fluorescent probe Hg2+ pH PET ICT
Content Type	Text
Resource Type	Article
Subject	Biochemistry Instrumentation Information Systems Medicine Analytical Chemistry Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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Self-Associated 1,8-Naphthalimide as a Selective Fluorescent Chemosensor for Detection of High pH in Aqueous Solutions and Their Hg2+ Contamination.

Self-Associated 1,8-Naphthalimide as a Selective Fluorescent Chemosensor for Detection of High pH in Aqueous Solutions and Their Hg²⁺ Contamination.