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

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creativework.keywords1,8-naphthalimide, diaminotriazine, fluorescent probe, Hg2+, ICT, PET, pH, self-assembly
creativework.publisherMDPIen
dc.contributor.authorSaid A.I.
dc.contributor.authorStaneva D.
dc.contributor.authorAngelova S.
dc.contributor.authorGrabchev I.
dc.date.accessioned2024-07-10T14:27:05Z
dc.date.accessioned2024-07-10T14:50:32Z
dc.date.available2024-07-10T14:27:05Z
dc.date.available2024-07-10T14:50:32Z
dc.date.issued2023-01-01
dc.description.abstractA 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.
dc.identifier.doi10.3390/s23010399
dc.identifier.issn1424-8220
dc.identifier.scopusSCOPUS_ID:85145964156en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/774
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85145964156&origin=inward
dc.titleSelf-Associated 1,8-Naphthalimide as a Selective Fluorescent Chemosensor for Detection of High pH in Aqueous Solutions and Their Hg2+ Contamination
dc.typeArticle
oaire.citation.issue1
oaire.citation.volume23
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