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Copper(II)‐Specific Fluorogenic Task‐Specific Ionic Liquids as Selective Fluorescence Probes and Recyclable Extractants
Author(s) -
Chatterjee Sobhan,
Gohil Hardipsinh,
Suresh E.,
Paital Alok Ranjan
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201501679
Subject(s) - ionic liquid , chemistry , fluorescence , copper , extraction (chemistry) , ligand (biochemistry) , aqueous solution , detection limit , liquid–liquid extraction , metal ions in aqueous solution , inorganic chemistry , chloride , selectivity , naphthalene , absorption (acoustics) , derivative (finance) , ion , chromatography , organic chemistry , materials science , biochemistry , physics , receptor , quantum mechanics , composite material , financial economics , economics , catalysis
The designed synthesis of a series of copper(II) specific fluorogenic hydrophobic task‐specific ionic liquids (TSILs) from a new naphthalene‐based tetradentate ligand is reported. Absorption and fluorescence spectral studies reveal both the ligand and its derivative TSILs show exclusive selectivity towards copper(II) ions. The Stern–Volmer method for calculation of the detection limit for ligand and TSIL 1–3 shows values of 0.12, 20, 17, and 15 μ M , respectively. Extraction and striping studies by doping these TSILs in [bmim][NTf 2 ] demonstrated that these TSILs are recyclable extractants for the selective recovery of Cu II ions from a mixture of 14 relevant metal chloride aqueous solutions in biphasic liquid–liquid extraction with approximately 95 % recovery.