title: Fluorescence "Turn-On" chemosensor for the selective detection of beryllium.
abstract: A new fluorogenic method for selective and sensitive determination of beryllium using 2,6-diphenyl-4-benzo-9-crown-3-pyrane (DBCP) was developed. The proposed fluorescent probe undergoes fluorescent emission intensity enhancement upon binding to beryllium ions in MeOH/H(2)O (70:30, v/v) solution. The fluorescence enhancement of DBCP is attributed to a 1:1 complex formation between DBCP and Be(2+) ion, which has been utilized as the basis for selective detection of Be(2+) ion. With the optimum condition described, the fluorescence enhancement at 531 nm was linear to the concentration of beryllium in the range of 1.6×10(-8)-1.6×10(-7) M and a detection limit of 1.5×10(-9) M. The fluorescent probe exhibits high selectivity for Be(2+) ion over the other common mono, di- and trivalent cations.
authors: Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran. smhosseini@khayam.ut.ac.ir
authors: Morteza
authors: M
authors: Hosseini
authors: Zahra
authors: Z
authors: Vaezi
authors: Mohammad Reza
authors: MR
authors: Ganjali
authors: Farnoush
authors: F
authors: Faridbod
authors: Shiva Dehghan
authors: SD
authors: Abkenar
mesh_terms: D001608:Beryllium / Q000032:analysis*; D002413:Cations, Divalent / Q000032:analysis; D005456:Fluorescent Dyes / Q000737:chemistry*; D057230:Limit of Detection; D011714:Pyrans / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods*
chemical_list: D002413:Cations, Divalent; D005456:Fluorescent Dyes; D011714:Pyrans; D001608:Beryllium