title: Dye-functional mesoporous silica material for fluorimetric detection of Cr(III) in aqueous solution and biological imaging in living systems.
abstract: A dye-functionalized silica nanomaterial, SBA-RT was prepared by the immobilization of the Rhodamine-based chemosensor R6G-TETA within the channels of SBA-15. SBA-RT exhibits several different properties compared to the free R6G-TETA, such as higher selectivity, blue-shift of the UV-vis spectra due to special spatial environment in the channels of the mesoporous material. It presents Cr(III)-selective fluorimetric and colorimetric responses in aqueous solution. The fluorescence responses are reversible by treating with EDTA and do not vary over a broad pH range suitable for Cr(III) bioimaging application. Through isolating of the metal ions within the mesopores of the silica, SBA-RT can extract Cr(III) from the solution with only trace amounts remaining. The fluorescence images experiment demonstrated the possibility of further application in monitoring Cr(III) in living cells and organisms.
authors: State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian High-Tech Industrial Zone, 116024, China.
authors: Qingtao
authors: Q
authors: Meng
authors: Weiping
authors: W
authors: Su
authors: Xiaoming
authors: X
authors: Hang
authors: Xuezhao
authors: X
authors: Li
authors: Cheng
authors: C
authors: He
authors: Chunying
authors: C
authors: Duan
mesh_terms: D000818:Animals; D017608:Chromium Compounds / Q000032:analysis*; D005260:Female; D005456:Fluorescent Dyes / Q000737:chemistry*; D005470:Fluorometry / Q000379:methods*; D006367:HeLa Cells; D006801:Humans; D008297:Male; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D012996:Solutions / Q000032:analysis; D014867:Water / Q000032:analysis*; D014961:X-Ray Diffraction / Q000379:methods; D015027:Zebrafish
chemical_list: D017608:Chromium Compounds; D005456:Fluorescent Dyes; D012996:Solutions; D014867:Water; D012822:Silicon Dioxide