Talk given by Prof. Ron Naaman Department of Chemical Physics Weizmann Institute Rehovot, Israel Abstract: An interesting question is why nature preserved chirality so persistently, with no exception, despite the energy cost of keeping molecules chiral. It will be shown that, at least partially, this is due to the special effect that takes place in chiral systems, termed Chiral Induced Spin Selectivity (CISS).[1] Spin based properties, applications, and devices are commonly related to magnetic effects and to magnetic materials. However, we found that chiral organic molecules can act as spin filters for photoelectrons transmission,[2] in electron transfer,[3] and in electron transport.[4] The new effect has interesting implications for the production of new types of spintronics devices,[5] but perhaps much more importantly it allows efficient electron transfer in bio-system, controls the path of reactions in biology,[6] and may allow for an efficient bio-recognition. The effect and its implications will be discussed. References: 1. Naaman, R.; Waldeck, D.H. J. Phys. Chem. Lett. (feature) 2012, 3, 2178; Ann. Rev. Phys. Chem. 2015, 66, 263. 2. Göhler, B.; Hamelbeck, V.; Markus, T.Z.; Kettner, M.; Hanne, G.F.; Vager, Z.; Naaman, R.; Zacharias, H. Science 2011, 331, 894. 3. Mishra, D.; Markus, T.Z.; Naaman, R.; Kettner, M.; Göhler, B.; Zacharias, H.; Friedman, N.; Sheves, M.; Fontanesi, C. PNAS, 2013, 110, 14872. 4. Xie, Z.; Markus, T. Z.; Cohen, S. R.; Vager, Z.; Gutierrez, R.; Naaman, R. Nano Letters, 2011, 11, 4652. 5. Ben Dor, O.; Yochelis, S.; Mathew, S. P.; Naaman, R.; Paltiel, Y. Nature Communication, 2013, 4, 2256. 6. Mtangi, W.; Kiran V.; Fontanesi, C.; Naaman R., J. Phys. Chem. Lett., 2015, 6, 4916.

This event is part of the eventgroup INT Talks

Homepage
https://www.int.kit.edu/events.php

Speaker
Prof. Ron Naaman

Weizmann Institute, Tel Aviv, Israel
https://www.weizmann.ac.il/chemphys/naaman/

Organizer
Prof. Dr. Marcel Mayor
Institut für Nanotechnologie
KIT
Hermann-von-Helmholtz-Platz 1
76344 Eggenstein-Leopoldshafen
Mail: marcel mayor ∂does-not-exist.kit edu
https://www.int.kit.edu/staff_marcel.mayor.php

Targetgroup
Interested / Everyone