The interaction of methylene blue(MB) and bovine serum albumin(BSA) is investigated in the SDS micelle system which is simulated as one kind of coexisted albumin. The interaction parameters of MB and BSA and simulated...The interaction of methylene blue(MB) and bovine serum albumin(BSA) is investigated in the SDS micelle system which is simulated as one kind of coexisted albumin. The interaction parameters of MB and BSA and simulated albumin such as partition coefficientκ、 normal binding free energyΔ G、 average binding number n are calculated. The results show that most of MB is in the form of monomer in SDS micelle systems； the main interaction of MB and BSA is of static electric and H-bind force,and that of MB and simulated albumin is only of static electric force.展开更多
Iron(Ⅱ) tetrasulfophthalocyanine(FeTSPc) ,as a novel mimetic enzyme of peroxidase,was used in the synthesis of a conducting polyaniline(PANI) /sodium dodecylsulfate(SDS) complex in SDS aqueous micellar solutions. The...Iron(Ⅱ) tetrasulfophthalocyanine(FeTSPc) ,as a novel mimetic enzyme of peroxidase,was used in the synthesis of a conducting polyaniline(PANI) /sodium dodecylsulfate(SDS) complex in SDS aqueous micellar solutions. The effects of pH,concentrations of aniline,SDS and H2O2,and reaction time on polymerization of aniline were studied in this case as shown by UV-Vis absorption spectroscopy. The results show that a wide range of pH(0.5-4.0) is required to produce the conducting PANI,and the optimal pH is 1.0 in SDS micelle. The optimal concentrations of aniline,SDS and H2O2 in feed,and reaction time in this case for the production of conducting PANI are respectively 10 mmol/L,10 mmol/L,25 mmol/L,and 15 h. FT-IR spectrum,elemental analysis,conductivity,cyclic voltammetry and thermogravimetric analysis confirm the thermal stability and electroactive form of PANI.展开更多
In this work,the electrochemical behavior of methyl jasmonate(MeJA)on a glassy carbon electrode was investigated in 0.1 mol/L H2SO4 by voltammetry.MeJA exhibited enhanced oxidation behavior in the presence of sodium d...In this work,the electrochemical behavior of methyl jasmonate(MeJA)on a glassy carbon electrode was investigated in 0.1 mol/L H2SO4 by voltammetry.MeJA exhibited enhanced oxidation behavior in the presence of sodium dodecyl sulfate(SDS). The electrochemical reaction of MeJA on the electrode was carried out with SDS micelles to improve the solubility of MeJA by hydrophobic interaction.Consequently,the oxidation peak current was sensitively enhanced.The effect of experimental parameters on the oxidative peak current was investigated including the surfactant concentration,supporting electrolyte,accumulation potential and time,and scan rate.展开更多
文摘The interaction of methylene blue(MB) and bovine serum albumin(BSA) is investigated in the SDS micelle system which is simulated as one kind of coexisted albumin. The interaction parameters of MB and BSA and simulated albumin such as partition coefficientκ、 normal binding free energyΔ G、 average binding number n are calculated. The results show that most of MB is in the form of monomer in SDS micelle systems； the main interaction of MB and BSA is of static electric and H-bind force,and that of MB and simulated albumin is only of static electric force.
基金Project(07JJ6020) supported by the Hunan Provincial Natural Science Foundation of ChinaProject(2007-24-3) supported by the Huaihua Key Science and Technology Program, China
文摘Iron(Ⅱ) tetrasulfophthalocyanine(FeTSPc) ,as a novel mimetic enzyme of peroxidase,was used in the synthesis of a conducting polyaniline(PANI) /sodium dodecylsulfate(SDS) complex in SDS aqueous micellar solutions. The effects of pH,concentrations of aniline,SDS and H2O2,and reaction time on polymerization of aniline were studied in this case as shown by UV-Vis absorption spectroscopy. The results show that a wide range of pH(0.5-4.0) is required to produce the conducting PANI,and the optimal pH is 1.0 in SDS micelle. The optimal concentrations of aniline,SDS and H2O2 in feed,and reaction time in this case for the production of conducting PANI are respectively 10 mmol/L,10 mmol/L,25 mmol/L,and 15 h. FT-IR spectrum,elemental analysis,conductivity,cyclic voltammetry and thermogravimetric analysis confirm the thermal stability and electroactive form of PANI.
基金supported by the National Natural Science Foundation of China(90817103 and 20775055)Chen Zilin's start-up fund for the Luojia Chair Professorship of Wuhan University(306276216)
文摘In this work,the electrochemical behavior of methyl jasmonate(MeJA)on a glassy carbon electrode was investigated in 0.1 mol/L H2SO4 by voltammetry.MeJA exhibited enhanced oxidation behavior in the presence of sodium dodecyl sulfate(SDS). The electrochemical reaction of MeJA on the electrode was carried out with SDS micelles to improve the solubility of MeJA by hydrophobic interaction.Consequently,the oxidation peak current was sensitively enhanced.The effect of experimental parameters on the oxidative peak current was investigated including the surfactant concentration,supporting electrolyte,accumulation potential and time,and scan rate.
