Proceedings of September Meeting 2016 (NFM16)
Publication date: 14th June 2016
Electron transport (ETp), i.e., electronic conduction across peptides and proteins in a solid state–like configuration is surprisingly efficient, comparable to or, if normalized to length, at times even more efficient than that via completely conjugated molecules.1 Working with modified proteins and with homopeptides we find that both cofactors and the secondary structure matter for ETp efficiency.
While ET and ETp are related, nature regulates ET via redox chemistry, where control over the process is achieved at a price in free energy,while for ETp a redox process is not a necessary condition. This allows studying ETp via non-redox proteins, such as the rhodopsins and albumins.
This finding points to peptides as an efficient transport medium, the main topic of my lecture.
1 N. Amdursky et al., Adv. Mater. 42,7142-7161(2014) Electronic Transport via Proteins10.1002/adma.201402304
* work done with Profs.Mordechai Sheves, Israel Pecht. Parts were done with former group members, R. Lovrincic, L. Sepunaru, Xi Yu, and present group members C. Guo and S. Mukhopadhyay. Computational theory was done by Prof. L. Kronik, Drs. P. Agrawal D. Egger, S. Refaely-Abramson, and Prof. Y. Levy and Y. Gavrilov.
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