ArticleJournal of fluorescence2026
Portable and Practical Dual-Mode Fluorescent/Colorimetric Probe for Selective Cu
Article in Journal of fluorescence, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
3 authors.
Funding
Abstract
A portable and practical chemosensor, DQHP ((E)-2,4-dibromo-6-((2-(quinolin-2-yl)hydrazineylidene)methyl)phenol), was synthesized for the sensing of Cu2+. DQHP selectively detected Cu2+ via fluorescence turn-off response and a visible color variation from pale yellow to yellowish-brown in DMSO/PBS buffer (5:5). The calculated limits of detection for Cu2+ were 0.599 µM (fluorescence) and 1.34 µM (UV-vis), both well below the World Health Organization’s safe threshold of 31.5 µM. DQHP was effectively utilized to detect Cu2+ through fluorescence and UV-vis spectroscopy in a pH range of 5–9 and could quantify Cu2+ in real samples, including drinking and stream water. In addition, test strip and smartphone-based Cu2+ detection enabled portable and convenient on-site analysis. The sensing process of Cu2+ by DQHP was elucidated through ESI-MS, Job-plot, 1H NMR titration, and TD-DFT calculations.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.