Novel probes based on coumarin-bisdithiocarbamate system for selective recognition of Ag(I) in aqueous solution

Autor:	Lin Liu, Jiu Li Wu, Guo Feng Chen, Suo Juan Wu, Bao Hua Chen
Rok vydání:	2017
Předmět:	Detection limit Fluorophore Aqueous solution 010405 organic chemistry Metal ions in aqueous solution General Chemistry 010402 general chemistry 01 natural sciences Fluorescence 0104 chemical sciences Job plot chemistry.chemical_compound chemistry Moiety Selectivity Nuclear chemistry
Zdroj:	Research on Chemical Intermediates. 44:1381-1395
ISSN:	1568-5675 0922-6168
DOI:	10.1007/s11164-017-3173-3
Popis:	Two novel fluorescent probes (C1, C2), comprising a coumarin moiety as fluorophore and a pair of dithiocarbamates as recognition sites, were designed and synthesized as fluorescent probes for Ag+. The probes exhibited high selectivity for Ag+ with fluorescence enhancement (FE) in CH3CN/4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) (1:9, v/v, pH 7.38); the selectivity was not affected by other metal ions. The binding ratio of C2–Ag+ complex was determined to be 1:1 according to the Job plot and mass spectroscopy (MS) data. The association constant K a of Ag+ with C2 was 1.6 × 104 M−1. These probes could be applied for monitoring of Ag+ in aqueous solution in the pH range of 5.0–8.0, with calculated detection limit of 0.27 μM.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b391e10300d78384426bb2e40709f204 https://doi.org/10.1007/s11164-017-3173-3 Zobrazit plný text záznamu Full text from SpringerLink