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This project has explored the use of diamond-based sensors for biosensing applications. Diamond thin films offer an attractive platform for biosensing and bioelectronic applications, due to a unique set of physical, chemical, and electrochemical properties. The focus of this project has been i) the development of novel method for the functionalization of diamond surfaces, and ii) the development of highly sensitive diamond-based transducing electronic devices. Novel methods for introducing functional groups onto diamond surfaces have been developed based on self-assembled monolayers (SAMs) and polymer brushes. SAMs were shown to be suitable for the preparation of monolayers of proteins on diamond surfaces, whereas polymers brushes were shown to be effective for achieving a much higher loading of proteins. Polymer brushes were tailored in order to provide several functionalities, namely docking sites for protein immobilization and redox active groups to enhance charge transport along the insulating polymers. Several spectroscopy techniques confirmed the high loading of proteins on the polymer brush, as well as the effective electron charge transfer over large distances in the redox-functional polymers. The influence of the material properties, as well as the impact of the surface modification on the electron transfer across the diamond/protein and diamond/electrolyte interface has been the focus of this project. Arrays of diamond microelectrodes, as well as arrays of diamond field effect transistors have been developed during the time span of the project. Combining our functionalization efforts with the diamond sensors, we have demonstrated enzyme-modified amperometric diamond biosensors for the detection of H2O2, a molecule involved in neurotransmission regulation. In the last stage, the project has also address the potential use of graphene-related materials for sensing applications.       

The project has exploited the interdisciplinary expertise brought into the IGSSE team by the group of Prof. R. Jordan (now Professur für Makromolekulare Chemie, TU Dresden), and the group of Dr. J.A. Garrido (Walter Schottky Institut, E25, TU München). During the time span of the project, the largest part of the work has been carried out by the doctoral candidates Ms. Naima A. Hutter (Chemistry Department) and Mr. Andreas Reitinger (Physics Department).

 

 

01-01-1970
IGSSE setup of interdisciplinary research in project teams
16.05.17

Apply now: 12th call for proposals

IGSSE supports up to 10 new project teams

Call closes 2 July 2017

11.06.17

Apply now: IGSSE travel grant for ICCE 2017

28-29 September 2017, TU Darmstadt

Submission deadline for abstracts: 18 June 2017

08.06.17

IGSSE Forum 2017

29-31 May 2017, TUM Science and Study Center Raitenhaslach, Burghausen

14.05.17

Climate-KIC: Join the PhD Catapult

Two-week thematic summer schools across Europe

04.05.17

IAS Symposium: Selected topics in science and technology

8-10 May 2017, IAS Building, Garching Campus

02.05.17

IAS Coffee Talk with PTL Florian Praetorius

3 May 2017, 1 pm, TUM IAS Building, Garching Campus

23.02.16

10th IGSSE Forum

1 - 4 June 2016, TUM Science and Study Center, Burghausen

05.06.16

10th IGSSE Forum

Smart cooperation - science and technology in, with and for society

15.12.15

The Science of Cooking

Doctoral Candidates explore the Secrets of a great Dinner

26.11.15

ATUMS@IGSSE

Having heard of a great Canadian Kick-Off Meeting, everyone at IGSSE was thrilled to welcome the...

20.11.15

Breakfast at IGSSE´s

Meet the IGSSE team every other month! All the things IGSSE members wanted to asked but never dared...

13.10.15

Save the Date: Canadian ATUMS Speaker on "Global Science- Global Career"

26. November 2015, 6-8 pm, IAS Faculty Club, Garching Campus

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Friday, 09. June 2017
Workshop: Standing up for science
9 June 2017, 9am-4pm, Brussels
Apply now: McKinsey 'Forschergeist' symposium
9-11 June 2017, Berlin For doctoral researchers and postdocs!