title: β-Carboline-functionalized dithioacetal as Hg2+-selective fluorescence probe in water.
abstract: A novel sensing system based on the β-carboline core has been designed and synthesized for Hg(2+) detection in water. We have demonstrated that a straight forward methodology can provide rapid, sensitive and selective recognition (cross-contamination experiments) for Hg(2+) over a wide pH range. The vivid fluorescence change from blue to colorless can be clearly discriminated by the naked eye. Furthermore, there is a good negative correlation between the fluorescent intensity and the concentration of Hg(2+) in the range 1.0×10(-6) M-7.0×10(-6) M. β-Carboline as a fluorophore synthesized via this route also provides a new strategy for the design of novel fluorescence probes and fluorochromes.
authors.affiliation: College of Science, Northwest A&F University, Yangling 712100, Shaanxi, China.
authors.forename: Na
authors.initials: N
authors.lastname: Li
authors.affiliation: College of Science, Northwest A&F University, Yangling 712100, Shaanxi, China.
authors.forename: Jiang-Kun
authors.initials: JK
authors.lastname: Dai
authors.affiliation: College of Science, Northwest A&F University, Yangling 712100, Shaanxi, China.
authors.forename: Hong-Tao
authors.initials: HT
authors.lastname: Du
authors.affiliation: College of Science, Northwest A&F University, Yangling 712100, Shaanxi, China.
authors.forename: Mao-Sen
authors.initials: MS
authors.lastname: Yuan
authors.affiliation: College of Science, Northwest A&F University, Yangling 712100, Shaanxi, China.
authors.forename: Ji-Wen
authors.initials: JW
authors.lastname: Zhang
authors.affiliation: College of Science, Northwest A&F University, Yangling 712100, Shaanxi, China. Electronic address: wangjunru@nwsuaf.edu.cn.
authors.forename: Jun-Ru
authors.initials: JR
authors.lastname: Wang
mesh_terms: D000080:Acetals / Q000737:chemistry*; D002243:Carbolines / Q000138:chemical synthesis* / Q000737:chemistry; D005456:Fluorescent Dyes / Q000138:chemical synthesis* / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008628:Mercury / Q000032:analysis*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D014867:Water / Q000737:chemistry*
chemical_list: D000080:Acetals; D002243:Carbolines; D005456:Fluorescent Dyes; D014867:Water; D008628:Mercury
keywords: Aqueous solution; Dithioacetal; Fluorescent probe; Mercury ion; β-Carboline