Hybrid Systems on Diamond

Expanding the range of molecules that can be covalently grafted on diamond substrates is of increasing interest in many bio-applications. The possibility of surface termination makes diamond a promising platform for different functionalization methods. In particular, diamond surfaces can be modified with organophosphonate self-assembled monolayers (SAMs) and polymer brushes, creating suitable platforms for the immobilization of proteins without loosing their functionality. In particular biohybrid heterostructures based on bacterial reaction centers immobilized on carbon-based electrodes can be applied to realize hybrid systems able to convert sunlight into other forms of energy with high efficiency. Surface analysis methods, such as atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) are used to characterize the modified surfaces. Electrochemical characterization with cyclic voltammetry (CV), square wave voltammetry (SWV), electrochemical impedance spectroscopy (EIS), and chronoamperometrie (CA) can be applied to investigate the charge transfer mechanism in such complex hybrid systems.

Cyclic voltammetry of cytochrome c immobilized on differently treated diamond surfaces.

Selected Publications:

Caterino R.;Csiki R.; Wiesinger M.; Sachsenhauser M.; Speranza G., Janssens S. D.; Haenen K.; Stutzmann M.;Garrido J. A.; Cattani-Scholz A. "Organophosphonate biofunctionalization of diamond electrodes", ACS Appl. Mater. Interfaces 2014, 6, 13909−13916.

Caterino R.;Csiki R.; Lyuleeva A.; Pfisterer J.; Wiesinger M.; Janssens S. D.; Haenen K.; Cattani-Scholz A.; Stutzmann M.; Garrido J. A.; “Photocurrent generation on diamond electrodes modified with reaction centers”, ACS Appl. Mater. Interfaces 2015, 7, 8099−8107.

Collaborations:

Jose A. Garrido, ICN2 - Catalan Institute of Nanoscience and Nanotechnology, Barcelona, Spain

Open positions:

if you would like to join us as an internship or master student on this project, please contact Reka Csiki.


TUM Technische Universität München TUM Technische Universität München Physik Department Elektrotechnik und Informationstechnik TUM Technische Universität München
 

Events & News

17 Jan 2018

ERC Consolidator Grant for Gregor Koblmüller   more

16 Jan 2018

Light-steering of spin-polarized currents in topological insulators   more

10 Aug 2017

Best Poster Awards for Ganpath Veerabathran and Alexander Andrejew at iNOW 2017   more

27 Jun 2017

Best Poster Award at Nanowire Week for Jochen Bissinger   more

15 Mar 2017

Dr. Kai Müller admitted to the “Junges Kolleg” of the Bavarian Academy of Sciences   more

Seminars

March 12, 2018

Two-dimensional coherent spectroscopy of a semiconductor microcavity   more

March 05, 2018

Diamond-organic photovoltaics   more