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  • Title: Fabrication of self-assembled oligophenylethynylenethiol monolayer for electrochemical glucose biosensor.
    Author: Jung SK, Namgung MO, Oh SY, Oh BK.
    Journal: Ultramicroscopy; 2009 Jul; 109(8):911-5. PubMed ID: 19369004.
    Abstract:
    An electrochemical glucose biosensor was developed using a gold (Au) electrode, which was composed of self-assembled oligophenylethynylenethiol monolayer and glucose oxidase (GOx) structure. Oligophenylethynylenethiol was used as a chemical linker for the immobilization of GOx on Au electrode, which facilitates the transfer of electron produced by enzyme reaction to the Au electrode. The electrical property of self-assembled oligophenylethynylenethiol monolayer was investigated by using cyclic voltammetry (CV). The formation of self-assembled oligophenylethynylenethiol monolayer and GOx layer on Au surface was verified by using atomic force microscopy (AFM) and surface plasmon resonance (SPR). The electrochemical glucose biosensor exhibited a linear relationship between target concentration and oxidation current in the range of 2-30mM and its detection limit was 2mM.
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