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• W3033138864 startingPage "13984" @default.
• W3033138864 abstract "2,6-Diaminopyridine-coupled rhodamines 1 and 2 have been synthesized, and the effect of substitution on amine functionality toward metal-ion interactions and self-assembly is thoroughly investigated. Both the compounds effectively recognize different metal ions of biological significance fluorimetrically and colorimetrically with a high degree of selectivity and sensitivities. While compound 1 is sensitive to Fe3+ ions, compound 2 is responsive to both Fe3+ and Al3+ ions in aqueous CH3CN (4/1, v/v; 10 mM tris HCl buffer, pH 6.8). The sensing mechanism involves the metal-ion chelation-induced spirolactam ring opening of the rhodamine scaffold that results in both color and fluorescence changes, while the extent of interactions with the metal ions is truly governed by the chemical structure of the compounds. Both 1 and 2 are proficient in detecting Fe3+ and Al3+ ions in human lung cancer cells (A549). As new findings, unlike 1, compound 2 formed a faint pink gel in the toluene-hexane mixture solvent (1:1, v/v), and the gel state of 2 selectively recognizes Ag+ ions by exhibiting a phase change from gel to purple sol. Experimental findings establish the role of the formamide moiety in forming the self-assembly." @default.
• W3033138864 created "2020-06-12" @default.
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• W3033138864 date "2020-06-03" @default.
• W3033138864 modified "2023-10-16" @default.
• W3033138864 title "Effect of Substitution at Amine Functionality of 2,6-Diaminopyridine-Coupled Rhodamine on Metal-Ion Interaction and Self-Assembly" @default.
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• W3033138864 doi "https://doi.org/10.1021/acsomega.0c01384" @default.
• W3033138864 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7301565" @default.
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• W3033138864 hasPublicationYear "2020" @default.
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