Reactive Platforms for Controllable Fabrication of Functional (Bio)interfaces.- Surface Reactions and Fabrication of Bioreactive Platforms.- Confinement Effects on the Reactivity in Ultrathin Polymer Films.- Reactive Thin Polymer Films as Platforms for the Immobilization of Biomolecules.- Tailored Biointerfaces via Derivatization of Polystyrene-b-Poly(tert-butyl acrylate) Thin Films.- Fabrication of Robust Biomolecular Patterns by Reactive Microcontact Printing on NHS Ester Containing Polymer Films.- Reactive CP on Ultrathin Block Copolymer Films.- Nanofabrication on Reactive Block Copolymer Film Platforms.- Outlook.