BIOSENSOR USING CONDUCTIVE GRAPHENES AND PREPARATION METHOD THEREOF

摘要

The present invention relates to a biosensor using conductive graphenes and a preparation method thereof, and more particularly, to a biosensor and a preparation method thereof, which uses a conductive graphene prepared using chemical functional groups or a conductive graphine to which a bioreceptor is attached, the bioreceptor being selectively combined to a target biomaterial on a laminated conductive graphene film repeatedly overlaid with the conductive graphenes in order to have a high surface density on a substrate. The conductive graphene biosensor according to the present invention has a large surface area and excellent electric conductivity, and thus can increase the immobilization rate of biological molecules, such as DNA, and enhance the detection sensitivity for biological molecules. In addition, by either directly detecting various target biomolecules or detecting electrochemical signals, the present invention can accurately detect reactions of biomaterials and bioreceptors on a large scale at once, and can introduce a detection method by which an accurate measurement, even of a small amount of source, can be obtained.