Comparative Evaluation of Benzimidazole-Based Schiff Bases as Fluorescent Probes for the Sensitive and Selective Detection of Cu²⁺ Ions in Water Samples

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dc.contributor.authorOcak, Zafer
dc.contributor.authorGümrükçüoğlu, Abidin
dc.contributor.authorOcak, Miraç
dc.contributor.authorTurgut Ocak, Ümmühan
dc.date.accessioned2025-10-01T10:32:33Z
dc.date.available2025-10-01T10:32:33Z
dc.date.issued2025
dc.departmentAÇÜ, Rektörlük, Bilim Teknoloji Uygulama ve Araştırma Merkezi
dc.description.abstractA new spectrofluorimetric method has been developed for the selective detection of Cu²⁺ ions based on a benzimidazole-containing Schiff base ligand. In this study, three structurally related Schiff bases (L1, L2, and L3) were synthesized and comparatively investigated for their fluorescence response in the presence of various cations. Among them, only L3 bearing ortho-hydroxyl groups on the aromatic rings exhibited a notable fluorescence quenching effect upon interaction with Cu²⁺, while L1 (para-hydroxyl substituted) and L2 (N, N-dimethylamino substituted) showed limited or no selectivity. The structure–function relationship revealed that the spatial orientation of donor groups plays a key role in metal coordination and signal transduction. The proposed method good sensitivity and selectivity toward Cu²⁺, with a linear response in the concentration range of 0–32 µg/L and a low detection limit of 0.98 µg/L, enabling quantification at relatively low concentrations. Furthermore, the method was tested with tap water samples. This work offers a potentially useful approach for Cu²⁺ determination but also highlights the importance of ligand geometry in fluorescent probe design.
dc.identifier.doi10.1007/s10895-025-04543-0
dc.identifier.issn10530509
dc.identifier.pmid40903713
dc.identifier.scopus2-s2.0-105015091131
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://hdl.handle.net/11494/5933
dc.identifier.wosWOS:001562633100001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakScopus
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakPubMed
dc.institutionauthorGümrükçüoğlu, Abidin
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Fluorescence
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectBenzimidazole
dc.subjectCu2+ ion detection
dc.subjectFluorescent sensor
dc.subjectSchiff base ligand
dc.subjectSelectivity
dc.subjectSpectrofluorimetry
dc.titleComparative Evaluation of Benzimidazole-Based Schiff Bases as Fluorescent Probes for the Sensitive and Selective Detection of Cu²⁺ Ions in Water Samples
dc.typeArticle

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