title: Terphenyl derivatives as "turn on" fluorescent sensors for mercury.
abstract: New terphenyl-based reversible receptors 1-4 with pyrene and quinoline as the fluorophores have been designed, synthesized, and examined for their cation recognition abilities toward various cations (Sm(3+), Nd(3+), Pb(2+), Hg(2+), Ba(2+), Cd(2+), Ag(+), Zn(2+), Cu(2+), Ni(2+), Co(2+), Fe(2+), Fe(3+), K(+), Mg(2+), Na(+), and Li(+)) by UV-vis, fluorescence, and NMR spectroscopy. The prepared receptors showed the highly selective and sensitive "Off-On" fluorescence signaling behavior for Hg(2+) ions in THF and mixed aqueous media (THF:H(2)O, 9.5:0.5).
authors.affiliation: Department of Chemistry, UGC Sponsored-Centre for Advance Studies-I, Guru Nanak Dev University, Amritsar-143005, Punjab, India. vanmanan@yahoo.co.in
authors.forename: Vandana
authors.initials: V
authors.lastname: Bhalla
authors.forename: Ruchi
authors.initials: R
authors.lastname: Tejpal
authors.forename: Manoj
authors.initials: M
authors.lastname: Kumar
authors.forename: Amandeep
authors.initials: A
authors.lastname: Sethi
mesh_terms: D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D008628:Mercury / Q000032:analysis*; D015394:Molecular Structure; D011721:Pyrenes / Q000737:chemistry; D011804:Quinolines / Q000737:chemistry; D013730:Terphenyl Compounds / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D011721:Pyrenes; D011804:Quinolines; D013730:Terphenyl Compounds; C030984:pyrene; C037219:quinoline; D008628:Mercury