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The direct electron transfer and adsorption behavior of hemoglobin(Hb) in a series of surfactants with different poly(ethylene oxide)(PEO) unit lengths on a glassy carbon electrode have been studied.With a surfactant of appropriate PEO unit length,the surfactant film-modified electrode exhibited a more stable adsorption state with a larger surface coverage of Hb and a more positive formal potential,which can be attributed to the effect of hydrogen bonding between proteins and surfactants.The electrochemical behavior of surfactants with different PEO unit lengths is discussed in detail.Moreover,UV-visible spectroscopy demonstrated that the structure of Hb was not destroyed in the surfactant films.The electrocatalytic activity of hydrogen peroxide on three neutral surfactant-modified electrodes has also been investigated.
The direct electron transfer and adsorption behavior of hemoglobin (Hb) in a series of surfactants with different poly (ethylene oxide) (PEO) unit lengths on a glassy carbon electrode have been studied. W a surfactant of the appropriate PEO unit length, the surfactant film -modified electrode exhibited a more stable adsorption state with a larger surface coverage of Hb and a more positive formal potential, which can be attributed to the effect of hydrogen bonding between proteins and surfactants. The electrochemical behavior of surfactants with different PEO unit lengths is discussed in detail. More than UV-visible spectroscopy demonstrated that the structure of Hb was not destroyed in the surfactant films. The electrocatalytic activity of hydrogen peroxide on three neutral surfactant-modified electrodes has also been investigated.