title: A differentially selective sensor with fluorescence turn-on response to Zn2+ and dual-mode ratiometric response to Al3+ in aqueous media.
abstract: A novel quinoline-coumarin (QC) fluoroionophore conjugated by means of a triazolyl-pyrrolidinyl linker exhibits differential dual selectivity for Zn(2+) and Al(3+) in mixed media. QC acts as a turn on fluorescence sensor for Zn(2+) while exhibiting overall ratiometric selectivity for Al(3+) in aqueous media. Moreover, QC exhibited preferential second mode of selectivity for Al(3+) as it ratiometrically displaces Zn(2+) from the [QC + Zn(2+)] complex.
authors.affiliation: Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064, India.
authors.forename: Debabrata
authors.initials: D
authors.lastname: Maity
authors.forename: T
authors.initials: T
authors.lastname: Govindaraju
mesh_terms: D000535:Aluminum / Q000032:analysis*; D002412:Cations / Q000737:chemistry; D003374:Coumarins / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D011804:Quinolines / Q000737:chemistry; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence / Q000379:methods*; D014867:Water / Q000737:chemistry; D015032:Zinc / Q000032:analysis*
chemical_list: D002412:Cations; D003374:Coumarins; D005456:Fluorescent Dyes; D011804:Quinolines; D014867:Water; C030123:coumarin; D000535:Aluminum; D015032:Zinc