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- W2042181193 abstract "The interaction of DNA with several new synthesized gemini surfactants R-α,ω-(C16H33N+(CH3)2Br−)2 (R=C6H12, C12H24, CH2CHOHC2H4 and CH2C6H4CH2) and the construction of DNA–gemini films formed on gold electrode surface were investigated with electrochemical techniques such as cyclic voltammetry and electrochemical impedance spectroscopy. It was found that these surfactants could be bound to DNA, driven by the electrostatic and hydrophobic interaction between DNA and surfactants, and the driving force strength was related to the structure of the spacer group of gemini surfactants. Among these gemini surfactants, C6H12-1,12-(C16H33N+(CH3)2Br−)2 was bound to DNA, mainly driven by its hydrophobic interaction with DNA due to the strong hydrophobicity and flexibility of its spacer group, while others were bound to DNA, mainly driven by electrostatic interaction with DNA because of their relatively poor hydrophobicity and flexibility. Multi-layer films composed of DNA and R-α,ω-(C16H33N+(CH3)2Br−)2 were prepared at gold electrodes, based on their interaction, and the electrochemical property of the resulted modified electrodes was mainly determined by the out-layer. It was found that the first R-α,ω-(C16H33N+(CH3)2Br−)2 layer markedly neutralized the negative charges of DNA and the second R-α,ω-(C16H33N+(CH3)2Br−)2 layer made the film density increase." @default.
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- W2042181193 date "2004-03-01" @default.
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- W2042181193 title "Electrochemical investigation on DNA–gemini complex films immobilized on gold electrode" @default.
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- W2042181193 doi "https://doi.org/10.1016/j.elecom.2004.01.008" @default.
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