不同pH值对Au/CaM膜结合Ca^(2+)的电化学行为研究

The Investigation of the Electrochemistry Behaviors at the Gold Electrode Modified with Calmodulin Self-assembled Monolayer Combination with Metal Ion

采用交流阻抗的方法,在包含1 mmol/L Fe(CN)63-/4-的0.15 mol/L的NaCl溶液中,研究了Au/CaM膜在不同的酸碱环境下结合Ca2+的电化学行为.结果表明:在pH为6.5的环境下Au/CaM膜结合Ca2+的能力要比在pH为4.5环境下的强.

The electrochemical behaviors of Calmodulin （CAM） self-assembled on Au substrate combine with Ca^2＋ under different pH value in the 0.15 mol/L NaCl solution containing 1 mmol/L Fe（CN）6^3-/4- have been investigated and compared with electrochemical impedance spectroscopy techniques systematically. The results demonstrated that the ability of CaM membrane combine with Ca^2＋ in pH = 6.5 is stronger than in pH = 4.5.