title: Ratiometric nanomolar detection of Cu2+ ions in mixed aqueous media: a Cu2+/Li+ ions switchable allosteric system based on thiacalix[4]crown.
abstract: A novel ditopic fluorescent chemosensor 2, based on the 1,3-alternate conformation of thiacalix[4]crown possessing two complexation sites, was synthesized and shows ratiometric nanomolar detection of Cu(2+) ions and exhibits negative allosteric behaviour between Cu(2+)/Li(+) ions in mixed aqueous media.
authors: Department of Chemistry, UGC Sponsored Centre for Advanced Studies-1, Guru Nanak Dev University, Amritsar, Punjab, India. mksharmaa@yahoo.co.in
authors: Manoj
authors: M
authors: Kumar
authors: Naresh
authors: N
authors: Kumar
authors: Vandana
authors: V
authors: Bhalla
mesh_terms: D003300:Copper / Q000032:analysis*; D043844:Crown Ethers / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry; D007477:Ions / Q000737:chemistry; D008094:Lithium / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D014867:Water / Q000737:chemistry
chemical_list: D043844:Crown Ethers; D005456:Fluorescent Dyes; D007477:Ions; D014867:Water; D003300:Copper; D008094:Lithium