A chemo-sensor [Ru（bpy）2（bpy-DPF）]（PF6）2 （1） （bpy = 2,2＇-bipyridine, bpy-DPF = 2,2＇-bipyridyl-4,4＇- bis（N,N-di（2-picolyl））formylamide） for Cu2＋ using di（2-picolyl）amine （DPA） as the recognition g...A chemo-sensor [Ru（bpy）2（bpy-DPF）]（PF6）2 （1） （bpy = 2,2＇-bipyridine, bpy-DPF = 2,2＇-bipyridyl-4,4＇- bis（N,N-di（2-picolyl））formylamide） for Cu2＋ using di（2-picolyl）amine （DPA） as the recognition group and a ruthe- nium（II） complex as the reporting group was synthesized and characterized successfully. It demonstrates a high se- lectivity and efficient signaling behavior only for Cu2＋ with obvious red-shifted MLCT （metal-to-ligand charge transfer transitions） absorptions and dramatic fluorescence quenching compared with Zn2＋ and other metal ions.展开更多
A rapid method for the extraction and monitoring of nanogram level of Pbz＋ and Cuz＋ ions using uniform silanized mesopor （SBA-15） functionalized with aminobenzenesulfonamide groups and flame atomic absorption spec...A rapid method for the extraction and monitoring of nanogram level of Pbz＋ and Cuz＋ ions using uniform silanized mesopor （SBA-15） functionalized with aminobenzenesulfonamide groups and flame atomic absorption spectrometry （FAAS） is presented. Aminobenzenesulfonamide functionalized SBA-15 was synthesized according to procedure in the literature and the presence of organic groups in the silica framework was demonstrated by FT-IR spectra. The functionalized product showed the BET surface area 110 mZ/g and pore diameter 5. l nm, based on adsorption-desorption of N2 at 77 K. The effect of several variables such as （amount of adsorbent, stirring time, pH and presence of other ions in the medium） has been studied. Lead and copper were completely extracted at pH greater than 3 after stirring for 10 min. The maximum capacity of the adsorbent was found to be 191.3 ＋ 1.4 and 155.0 ＋ 1.0 ~xg of lead and copper ions/mg functionalized SBA-15, respectively. The preconcentration factor of the method was found to be 200. The detection limit of the technique was 3.4 and 0.4 ng/mL for Pb2＋ and Cuz＋, respectively. The applications of this methodology for real samples were examined by various water type, black tea and pepper samples.展开更多
基金Project supported by the Hubei Provincial Natural Science Foundation （No. BZY09008） and the Key Projects of Chinese Ministry of Education （211210）.
文摘A chemo-sensor [Ru（bpy）2（bpy-DPF）]（PF6）2 （1） （bpy = 2,2＇-bipyridine, bpy-DPF = 2,2＇-bipyridyl-4,4＇- bis（N,N-di（2-picolyl））formylamide） for Cu2＋ using di（2-picolyl）amine （DPA） as the recognition group and a ruthe- nium（II） complex as the reporting group was synthesized and characterized successfully. It demonstrates a high se- lectivity and efficient signaling behavior only for Cu2＋ with obvious red-shifted MLCT （metal-to-ligand charge transfer transitions） absorptions and dramatic fluorescence quenching compared with Zn2＋ and other metal ions.
基金the Islamic Azad University, Shahre Rey Branch, for the support
文摘A rapid method for the extraction and monitoring of nanogram level of Pbz＋ and Cuz＋ ions using uniform silanized mesopor （SBA-15） functionalized with aminobenzenesulfonamide groups and flame atomic absorption spectrometry （FAAS） is presented. Aminobenzenesulfonamide functionalized SBA-15 was synthesized according to procedure in the literature and the presence of organic groups in the silica framework was demonstrated by FT-IR spectra. The functionalized product showed the BET surface area 110 mZ/g and pore diameter 5. l nm, based on adsorption-desorption of N2 at 77 K. The effect of several variables such as （amount of adsorbent, stirring time, pH and presence of other ions in the medium） has been studied. Lead and copper were completely extracted at pH greater than 3 after stirring for 10 min. The maximum capacity of the adsorbent was found to be 191.3 ＋ 1.4 and 155.0 ＋ 1.0 ~xg of lead and copper ions/mg functionalized SBA-15, respectively. The preconcentration factor of the method was found to be 200. The detection limit of the technique was 3.4 and 0.4 ng/mL for Pb2＋ and Cuz＋, respectively. The applications of this methodology for real samples were examined by various water type, black tea and pepper samples.
