In this paper, 2-carboxybenzaldehyde rhodamine B thiohydrazine （1） was synthesized and developed as a fluorescent probe to recognize Hg2＋ in DMF/H2O （1：9, v/v） solution with high selectivity. The probe can be ap...In this paper, 2-carboxybenzaldehyde rhodamine B thiohydrazine （1） was synthesized and developed as a fluorescent probe to recognize Hg2＋ in DMF/H2O （1：9, v/v） solution with high selectivity. The probe can be applied to the quantification of rig2＋ with a linear concentration range covering from 1.0 × 10^-7 mol/L to 1.0 × 10^-5 mol/L （R2 = 0.9985） and a detection limit of 4.2 × 10^-8 mol/L. The experiment results show that the response of probe 1 to Hg2＋ is pH-independent in a wide range from 4.0 to 9.0. Moreover, the probe 1 exhibits excellent selectivity toward Hg2＋ over other common metal cations. Most importantly, the probe can be employed to monitor Hg2＋ in living cells using fluorescent imaging technique with satisfied results.展开更多
A novel magnetically separable visible-light-photocatalyst, magnetite/N-doped carboxylate-rich carbon spheres （N-MCRCSs）, was synthesized by a facile ultrasonic method using the magnetite/carboxylate- rich carbon sp...A novel magnetically separable visible-light-photocatalyst, magnetite/N-doped carboxylate-rich carbon spheres （N-MCRCSs）, was synthesized by a facile ultrasonic method using the magnetite/carboxylate- rich carbon spheres （MCRCSs） as precursors. N element has been successfully doped into the MCRCSs in a HN03 aqueous solution via an ultrasonic treatment, which were demonstrated by the FT-IR and XPS. N- MCRCSs exhibit more intensive absorption over MCRCSs in the entire UV and visible region. N-MCRCSs can not only be easily recycled by applying an external magnetic field, but also exhibit powerful visible light photocatalytic activity.展开更多
基金supported by the National Natural Science Foundation of China(Nos.21105038,21005033,21107036)the Opening Project of State Key Laboratory of Chemo/Biosensing andChemometrics of Hunan University(No.201007)+2 种基金China Postdoc-toral Science Foundation(No.2013M541604)Postdoctoral Foundation of Jiangsu Province(No.1301047B)the Scientific Research Foundation for the Talents in Jiangsu University(Jiangsu,China,No.10JDG035)
文摘In this paper, 2-carboxybenzaldehyde rhodamine B thiohydrazine （1） was synthesized and developed as a fluorescent probe to recognize Hg2＋ in DMF/H2O （1：9, v/v） solution with high selectivity. The probe can be applied to the quantification of rig2＋ with a linear concentration range covering from 1.0 × 10^-7 mol/L to 1.0 × 10^-5 mol/L （R2 = 0.9985） and a detection limit of 4.2 × 10^-8 mol/L. The experiment results show that the response of probe 1 to Hg2＋ is pH-independent in a wide range from 4.0 to 9.0. Moreover, the probe 1 exhibits excellent selectivity toward Hg2＋ over other common metal cations. Most importantly, the probe can be employed to monitor Hg2＋ in living cells using fluorescent imaging technique with satisfied results.
基金supported by Universities Natural Science Foundation of Jiangsu Province(No.11KJB480001)Jiangsu Natural Science Fund of China(No.BK2012716)+2 种基金Postdoctoral Science Foundation of China(No.2012M520054)Highly Qualified Professional Initial Funding of Jiangsu University (10JDG120)Postdoctoral Foundation of Jiangsu Province (No.1102125C)
文摘A novel magnetically separable visible-light-photocatalyst, magnetite/N-doped carboxylate-rich carbon spheres （N-MCRCSs）, was synthesized by a facile ultrasonic method using the magnetite/carboxylate- rich carbon spheres （MCRCSs） as precursors. N element has been successfully doped into the MCRCSs in a HN03 aqueous solution via an ultrasonic treatment, which were demonstrated by the FT-IR and XPS. N- MCRCSs exhibit more intensive absorption over MCRCSs in the entire UV and visible region. N-MCRCSs can not only be easily recycled by applying an external magnetic field, but also exhibit powerful visible light photocatalytic activity.
