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    Graphene Oxide-Cytochrome c Multilayered Structures for Biocatalytic Applications: Decrypting the Role of Surfactant in Langmuir-Schaefer Layer Deposition

    Year: 2022

    Journal: ACS Appl. Mater. Interfaces, Volume 14, JUN 8, page 26204–26215

    Authors: Chalmpes, Nikolaos; Patila, Michaela; Kouloumpis, Antonios; Alatzoglou, Christina; Spyrou, Konstantinos; Subrati, Mohammed; Polydera, Angeliki C.; Bourlinos, Athanasios B.; Stamatis, Haralambos; Gournis, Dimitrios

    Organizations: project National Infrastructure in Nanotechnology, Advanced Materials and Micro-/Nanoelectronics - Operational Programme Competitiveness, Entrepreneurship and Innovation (NSRF 2014-2020) [MIS-5002772]; European Regional Development Fund of the European Union; Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation, under the call RESEARCH-CREATE-INNOVATE [2EDK-02171]; European Union (European Social Fund ESF) through the Operational Programme Human Resources Development, Education and Lifelong Learning [MIS-5000432, MIS-5033021]; European Union (European Regional Development Fund)

    Keywords: Langmuir-Schaefer; hybrid structures; cytochrome c; graphene; biocatalysis

    Graphene, a two-dimensional single-layer carbon allotrope, has attracted tremendous scientific interest due to its outstanding physicochemical properties. Its monatomic thickness, high specific surface area, and chemical stability render it an ideal building block for the development of well-ordered layered nanostructures with tailored properties. Herein, biohybrid graphene-based layer-by-layer structures are prepared by means of conventional and surfactant-assisted Langmuir-Schaefer layer deposition techniques, whereby cytochrome c molecules are accommodated within ordered layers of graphene oxide. The biocatalytic activity of the as-developed nanobio-architectures toward the enzymatic oxidation of 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt and decolorization of pinacyanol chloride is tested. The results show that the multilayer structures exhibit high biocatalytic activity and stability in the absence of surfactant molecules during the deposition of the monolayers.
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