Electronic Transport through Organophosphonate-Grafted Bacteriorhodopsin Films on Titanium Nitride

Domenikos Chryssikos; Julian M. Dlugosch; Jerry A. Fereiro; Takuya Kamiyama; Mordechai Sheves; David Cahen; Marc Tornow

doi:10.1109/nano51122.2021.9514351

Electronic Transport through Organophosphonate-Grafted Bacteriorhodopsin Films on Titanium Nitride

Domenikos Chryssikos
, Julian M. Dlugosch
, Jerry A. Fereiro
, Takuya Kamiyama
, Mordechai Sheves
, David Cahen
, Marc Tornow

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

4 Scopus citations

Abstract

Understanding the charge transport properties of proteins at the molecular scale is crucial for the development of novel bioelectronic devices. In this contribution, we report on the preparation and electrical characterization of thin films of bacteriorhodopsin grafted on the surface of titanium nitride via aminophosphonate linkers. Thickness analysis using atomic force microscopy revealed a protein film thickness of 8.2±1.5 nm, indicating the formation of a protein bilayer. Electrical measurements were carried out in the dry state, in a vertical arrangement with a eutectic gallium-indium (EGaIn) or an evaporated Ti/Au top contact. DC current-voltage measurements yielded comparable effective tunneling decay constants ß~ 0.13 A-1 for the EGaIn top contact and ~ 0.15 A-1 for the Ti/Au top contact. The results presented herein may establish a novel platform for studying charge transport via protein molecules in a solid-state device configuration.

Original language	English
Title of host publication	NANO 2021 - 21st IEEE International Conference on Nanotechnology, Proceedings
Publisher	IEEE Computer Society
Pages	389-392
Number of pages	4
ISBN (Electronic)	9781665441568
DOIs	https://doi.org/10.1109/nano51122.2021.9514351
State	Published - 28 Jul 2021
Externally published	Yes
Event	21st IEEE International Conference on Nanotechnology, NANO 2021 - Virtual, Montreal, Canada Duration: 28 Jul 2021 → 30 Jul 2021

Publication series

Name	Proceedings of the IEEE Conference on Nanotechnology
Volume	2021-July
ISSN (Print)	1944-9399
ISSN (Electronic)	1944-9380

Conference

Conference	21st IEEE International Conference on Nanotechnology, NANO 2021
Country/Territory	Canada
City	Virtual, Montreal
Period	28/07/21 → 30/07/21

Bibliographical note

Publisher Copyright:
© 2021 IEEE.

Funding

*Research was funded by the Deutsche Forschungsgemeinschaft (TO266/10-1).

Funders	Funder number
Deutsche Forschungsgemeinschaft	TO266/10-1

Access to Document

10.1109/nano51122.2021.9514351

Cite this

Chryssikos, D., Dlugosch, J. M., Fereiro, J. A., Kamiyama, T., Sheves, M., Cahen, D., & Tornow, M. (2021). Electronic Transport through Organophosphonate-Grafted Bacteriorhodopsin Films on Titanium Nitride. In NANO 2021 - 21st IEEE International Conference on Nanotechnology, Proceedings (pp. 389-392). (Proceedings of the IEEE Conference on Nanotechnology; Vol. 2021-July). IEEE Computer Society. https://doi.org/10.1109/nano51122.2021.9514351

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title = "Electronic Transport through Organophosphonate-Grafted Bacteriorhodopsin Films on Titanium Nitride",

abstract = "Understanding the charge transport properties of proteins at the molecular scale is crucial for the development of novel bioelectronic devices. In this contribution, we report on the preparation and electrical characterization of thin films of bacteriorhodopsin grafted on the surface of titanium nitride via aminophosphonate linkers. Thickness analysis using atomic force microscopy revealed a protein film thickness of 8.2±1.5 nm, indicating the formation of a protein bilayer. Electrical measurements were carried out in the dry state, in a vertical arrangement with a eutectic gallium-indium (EGaIn) or an evaporated Ti/Au top contact. DC current-voltage measurements yielded comparable effective tunneling decay constants {\ss}\textasciitilde{} 0.13 A-1 for the EGaIn top contact and \textasciitilde{} 0.15 A-1 for the Ti/Au top contact. The results presented herein may establish a novel platform for studying charge transport via protein molecules in a solid-state device configuration.",

author = "Domenikos Chryssikos and Dlugosch, \{Julian M.\} and Fereiro, \{Jerry A.\} and Takuya Kamiyama and Mordechai Sheves and David Cahen and Marc Tornow",

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Chryssikos, D, Dlugosch, JM, Fereiro, JA, Kamiyama, T, Sheves, M, Cahen, D & Tornow, M 2021, Electronic Transport through Organophosphonate-Grafted Bacteriorhodopsin Films on Titanium Nitride. in NANO 2021 - 21st IEEE International Conference on Nanotechnology, Proceedings. Proceedings of the IEEE Conference on Nanotechnology, vol. 2021-July, IEEE Computer Society, pp. 389-392, 21st IEEE International Conference on Nanotechnology, NANO 2021, Virtual, Montreal, Canada, 28/07/21. https://doi.org/10.1109/nano51122.2021.9514351

Electronic Transport through Organophosphonate-Grafted Bacteriorhodopsin Films on Titanium Nitride. / Chryssikos, Domenikos; Dlugosch, Julian M.; Fereiro, Jerry A. et al.
NANO 2021 - 21st IEEE International Conference on Nanotechnology, Proceedings. IEEE Computer Society, 2021. p. 389-392 (Proceedings of the IEEE Conference on Nanotechnology; Vol. 2021-July).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Chryssikos, Domenikos

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AU - Fereiro, Jerry A.

AU - Kamiyama, Takuya

AU - Sheves, Mordechai

AU - Cahen, David

AU - Tornow, Marc

PY - 2021/7/28

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AB - Understanding the charge transport properties of proteins at the molecular scale is crucial for the development of novel bioelectronic devices. In this contribution, we report on the preparation and electrical characterization of thin films of bacteriorhodopsin grafted on the surface of titanium nitride via aminophosphonate linkers. Thickness analysis using atomic force microscopy revealed a protein film thickness of 8.2±1.5 nm, indicating the formation of a protein bilayer. Electrical measurements were carried out in the dry state, in a vertical arrangement with a eutectic gallium-indium (EGaIn) or an evaporated Ti/Au top contact. DC current-voltage measurements yielded comparable effective tunneling decay constants ß~ 0.13 A-1 for the EGaIn top contact and ~ 0.15 A-1 for the Ti/Au top contact. The results presented herein may establish a novel platform for studying charge transport via protein molecules in a solid-state device configuration.

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ER -

Chryssikos D, Dlugosch JM, Fereiro JA, Kamiyama T, Sheves M, Cahen D et al. Electronic Transport through Organophosphonate-Grafted Bacteriorhodopsin Films on Titanium Nitride. In NANO 2021 - 21st IEEE International Conference on Nanotechnology, Proceedings. IEEE Computer Society. 2021. p. 389-392. (Proceedings of the IEEE Conference on Nanotechnology). doi: 10.1109/nano51122.2021.9514351

Electronic Transport through Organophosphonate-Grafted Bacteriorhodopsin Films on Titanium Nitride

Abstract

Publication series

Conference

Bibliographical note

Funding

Access to Document

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Cite this