title: Selective dendritic fluorescent sensors for Zn(II).
abstract: A series of dendritic 8-hydroxyquinoline (8-HQ) and 5-dialkyl(aryl)aminomethyl-8-HQ derivatives were synthesized and their fluoroionophoric properties toward representative alkali, alkaline earth, group IIIA and transition metal ions were investigated. Among the selected ions, Zn(II) enhanced the fluorescence of N-di-(methoxycarbonylethyl)aminoethyl-3-[4-(8-hydroxyquinolin-5-ylmethyl)piperazin-1-yl]-propanoic amide] (7) by 31-fold, while Al(III) caused enhancement to some extent. The absence of any significant fluorescence enhancement by the other ions examined renders 7a highly useful Zn(II)-selective fluorescent sensor.
authors.affiliation: The Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, PR China.
authors.forename: Feng
authors.initials: F
authors.lastname: Wang
authors.forename: Ruogu
authors.initials: R
authors.lastname: Peng
authors.forename: Yaowu
authors.initials: Y
authors.lastname: Sha
mesh_terms: D002725:Chloroform / Q000737:chemistry; D050091:Dendrimers / Q000138:chemical synthesis / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D008024:Ligands; D015125:Oxyquinoline / Q000138:chemical synthesis / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D017186:Titrimetry; D015032:Zinc / Q000737:chemistry*
chemical_list: D050091:Dendrimers; D005456:Fluorescent Dyes; D008024:Ligands; D015125:Oxyquinoline; D002725:Chloroform; D015032:Zinc