title: A novel dichromate-sensitive fluorescent nano-chemosensor using new functionalized SBA-15.
abstract: A novel fluorescence nano-chemosensor for Cr(2)O(7)(2-) anion has been developed by assembly of fluorescent aluminum complex of 8-hydroxyquinoline (AlQ(x)) within the channels of modified SBA-15. SBA-SPS-AlQ(x) shows a fluorescence emission at 486 nm. The observed remarkable fluorescence of SBA-SPS-AlQ(x) quenches in presence of Cr(2)O(7)(2-) anion. The results showed that this fluorescent nano-material can be a useful chemo-sensor for determination of dichromate anions in aqueous solutions. The linear detecting range of fluorescent nano-chemosensor for Cr(2)O(7)(2-) anion was 0.16-2.9 μmol L(-1). The lowest limit of detection (LDL) was also found to be 0.2 ng mL(-1) in aqueous solutions. SBA-SPS-AlQ(x) showed selectively and sensitively fluorescent quenching response toward Cr(2)O(7)(2-) ion in comparison with I(3)(-), NO(3)(-), CN(-), CO(3)(2-), Br(-), Cl(-), F(-), H(2)PO(4)(-) and SO(4)(2-) ions, which was because of the higher stability of its inorganic complex with dichromate ion.
authors.affiliation: Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran. smhosseini@khayam.ut.ac.ir
authors.forename: Morteza
authors.initials: M
authors.lastname: Hosseini
authors.forename: Vinod Kumar
authors.initials: VK
authors.lastname: Gupta
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Ganjali
authors.forename: Zahra
authors.initials: Z
authors.lastname: Rafiei-Sarmazdeh
authors.forename: Farnoush
authors.initials: F
authors.lastname: Faridbod
authors.forename: Hassan
authors.initials: H
authors.lastname: Goldooz
authors.forename: Ali Reza
authors.initials: AR
authors.lastname: Badiei
authors.forename: Parviz
authors.initials: P
authors.lastname: Norouzi