title: Design of a semirigid molecule as a selective fluorescent chemosensor for recognition of Cd(II).
abstract: A new 8-hydroxyquinoline-based chemosensor possessing a semirigid structure was designed, and its fluorescent sensing behavior toward metalions was investigated. A prominent fluorescence enhancement only for Cd(2+) was found in aqueous methanol solution. The results clearly suggest that the specific semirigid structure could selectively accommodate Cd(2+) according to ionic radius, which would effectively suppress the intramolecular radiationless transitions from the n pi* state to enhance the fluorescence response.
authors.affiliation: College of Chemistry and Chemical Engineering and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China.
authors.forename: Xiao-Liang
authors.initials: XL
authors.lastname: Tang
authors.forename: Xiao-Hong
authors.initials: XH
authors.lastname: Peng
authors.forename: Wei
authors.initials: W
authors.lastname: Dou
authors.forename: Jie
authors.initials: J
authors.lastname: Mao
authors.forename: Jiang-Rong
authors.initials: JR
authors.lastname: Zheng
authors.forename: Wen-Wu
authors.initials: WW
authors.lastname: Qin
authors.forename: Wei-Sheng
authors.initials: WS
authors.lastname: Liu
authors.forename: Jin
authors.initials: J
authors.lastname: Chang
authors.forename: Xiao-Jun
authors.initials: XJ
authors.lastname: Yao
mesh_terms: D002104:Cadmium / Q000032:analysis / Q000737:chemistry*; D002413:Cations, Divalent; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D008958:Models, Molecular; D010069:Oxadiazoles / Q000737:chemistry; D015125:Oxyquinoline / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D013050:Spectrometry, Fluorescence / Q000379:methods; D013816:Thermodynamics
chemical_list: D002413:Cations, Divalent; D005456:Fluorescent Dyes; D010069:Oxadiazoles; D002104:Cadmium; D015125:Oxyquinoline