title: Synthesis and analytical application of a novel fluorescent Hg2+ probe 3', 6'-bis(diethylamino)-2-((2,4-dimethoxybenzylidene)amino)spiro[isoindoline-1,9'-xanthene]-3-thione.
abstract: A novel probe, 3',6' - bis(diethylamino) -2- ((2,4-dimethoxybenzylidene)amino) spiro [isoindoline-1,9'-xanthene]-3-thione (RBS), was designed and synthesized. Its structure was characterized with elemental analysis, IR spectra and (1)H NMR. The probe displayed highly selective and sensitive recognition of Hg(2+). Reacting with mercury ions in aqueous solution, its fluorescence intensity was enhanced significantly, while its color was changed from colorless to pink. So, a new fluorescence method of detection of Hg(2+) was proposed. Its dynamic response concentration range and detection limit for Hg(2+) were 5.00 × 10(-9) M to 1.00 × 10(-6) M detected and 1.83 × 10(-9) M, respectively. Satisfying results were obtained when the probe was applied to detect spiked Hg(2+) in samples.
authors: College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong, China.
authors: Shikun
authors: S
authors: Liu
authors: Lili
authors: L
authors: Zhang
authors: Jigang
authors: J
authors: Gao
authors: Jie
authors: J
authors: Zhou
mesh_terms: D005456:Fluorescent Dyes / Q000138:chemical synthesis* / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007211:Indoles / Q000138:chemical synthesis* / Q000737:chemistry*; D008628:Mercury / Q000032:analysis* / Q000737:chemistry; D015394:Molecular Structure; D013141:Spiro Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D013997:Time Factors
chemical_list: C587321:3',6'-bis(diethylamino)-2-((2,4-dimethoxybenzylidene)amino)spiro(isoindoline-1,9'-xanthene)-3-thione; D005456:Fluorescent Dyes; D007211:Indoles; D013141:Spiro Compounds; D008628:Mercury
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