▎ 摘　　要

NOVELTY - Functionalized graphene structure (I) comprising: a graphene surface; 1-pyrenebutanoic acid succinimidyl ester (PBASE) molecules; molecules of at least one type of polycyclic aromatic hydrocarbon (PAH) compounds; and biomolecules, is new. Both the molecules of PBASE and molecules of PAH compounds are non-covalently linked to the graphene surface, where the biomolecule is linked to PBASE molecules. The PAH compound has at least four aromatic rings. The molecules of at least one type of PAH compound comprising pyrene, anthracene, chrysene, corannulene, naphthalene, phenanthrene, triphenylene, benzopyrene, coronene, tetracene, pentacene, and/or ovalene. The biomolecules are antibodies. USE - The functionalized graphene structure is useful as component in FET biosensor, which is used in an electronic device for biological sample analysis (all claimed). ADVANTAGE - The functionalized graphene structure improves chemical functionalization of graphene surface, and allows a more controlled and efficient way of preparing chemically modified graphene surfaces. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparing the functionalized graphene structure; a field-effect transistor (FET) biosensor comprising functionalized graphene structure; an electronic device for biological sample analysis comprising the FET biosensor; and electronic biological sample analysis using the electronic device. DESCRIPTION OF DRAWING(S) - The figure illustrates schematic view of non-covalent mixed functionalization of graphene surface and follow biofunctionalization with biomolecules (antibodies in this case) on a graphene transistor.