title: A highly selective quinoline-based fluorescent sensor for Zn(II).
abstract: A quinoline-based simple receptor (bis(2-quinolinylmethyl)benzylamine = 1) as a Zn(2+) selective fluorescent chemosensor showed a large fluorescent enhancement with a blue shift in the presence of Zn(2+) which is attributed to a chelation enhanced fluorescence (CHEF) effect with inhibition of a photoinduced electron transfer (PET) process of 1. In particular, this receptor could clearly distinguish Zn(2+) from Cd(2+). The binding mode of 1 and Zn(2+) was found to be a 1:1 and confirmed by Job plot, (1)H NMR titration and ESI-mass spectrometry analysis.
authors.affiliation: Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea.
authors.forename: Hyun
authors.initials: H
authors.lastname: Kim
authors.forename: Juhye
authors.initials: J
authors.lastname: Kang
authors.forename: Kyung Beom
authors.initials: KB
authors.lastname: Kim
authors.forename: Eun Joo
authors.initials: EJ
authors.lastname: Song
authors.forename: Cheal
authors.initials: C
authors.lastname: Kim
mesh_terms: D002413:Cations, Divalent / Q000032:analysis; D005456:Fluorescent Dyes / Q000737:chemistry*; D057230:Limit of Detection; D011804:Quinolines / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods; D015032:Zinc / Q000032:analysis*
chemical_list: D002413:Cations, Divalent; D005456:Fluorescent Dyes; D011804:Quinolines; C037219:quinoline; D015032:Zinc
keywords: Fluorescence enhancement; Fluorescent chemosensor; Quinoline; Zinc ion sensor