METHOD FOR ADSORBTION OF VARIOUS BIOMATERIALS TO CHEMICALLY MODIFIED GRAPHENE

摘要

PURPOSE: A method for absorbing a bio material in a graphene chemically reformed and the manufacturing method of a composite substrate are provided to be used in the manufacture of the electronic device of nano size having flexibility and conductivity, a circuit, and a bio sensor by selectively absorbing a bio material with high adsorption capability only on a reformed graphene and manufacturing a composite substrate including a graphene layer in which the bio material is selectively absorbed and patterned. CONSTITUTION: A method for absorbing a bio material in a graphene chemically reformed includes following steps. A step for doping and returning a graphene oxide with nitrogen; a step for manufacturing a buffer solution containing an alkaline earth metal and a bio material; a step for absorbing the bio material by dripping the buffer solution on the graphene oxide dipped and returned with nitrogen. A method for doping and returning the graphene oxide with nitrogen is a heat treatment at 500 - 800>= under 40/60 - 80/20 sccm H2/NH3. The alkaline earth metal is magnesium, beryllium, or calcium. The bio material is one or more kinds selected from a group comprising DNA origami, enzyme, antibody, serum albumin, gelatin A, gelatin B, tau protein, collagen, and casein. [Reference numerals] (AA) Photolithography/etching; (BB) Remaining photosensitive layer removal; (CC) Nitrogen doping and reduction; (DD) Photosensitive layer; (EE) Graphene oxide layer; (FF) Adhesive layer; (GG) Substrate; (HH) NrGO : nitrogen doped and reduced graphene oxide layer; (II) Bio material containing buffer solution drop;