IMS Research Center of Integrative Molecular Systems (CIMoS)

Seminars and Symposium

The 18th CIMoS Seminar
Chiral Molecules and the Electron's Spin- From Spintronics to Enantio-Separation

The 18th CIMoS Seminar <br>Chiral Molecules and the Electron's Spin- From Spintronics to Enantio-Separation

Spin based properties, applications, and devices are commonly related to magnetic effects and to magnetic materials. However, we found that chiral organic molecules act as spin filters for photoelectrons transmission, 1 in electron transfer, 2 and in electron transport. 3

The new effect, termed Chiral Induced Spin Selectivity (CISS), 4,5 was found, among others, in bio-molecules and in bio-systems. It has interesting implications for the production of new types of spintronics devices 6,7 and on electron transfer in biological systems. 8 Recently we found that charge polarization in chiral molecules is accompanied by spin polarization. 9 This finding shed new light on enantio-specific interactions and it opens the possibility to construct novel methods for enantio-separation.

References

  1. Gohler, B.; Hamelbeck, V.; Markus, T.Z.; Kettner, M.; Hanne, G.F.; Vager, Z.; Naaman, R.; Zacharias, H. Science 2011, 331, 894.
  2. Mishra, D.; Markus, T.Z.; Naaman, R.; Kettner, M.; Gohler, B.; Zacharias, H.; Friedman, N.; Sheves, M.; Fontanesi, C. PNAS, 2013, 110, 14872.
  3. Xie, Z.; Markus, T. Z.; Cohen, S. R.; Vager, Z.; Gutierrez, R.; Naaman, R. Nano Letters, 2011, 11, 4652.
  4. Naaman, R.; Waldeck, D.H. J. Phys. Chem. Lett. (feature) 2012, 3, 2178.
  5. R. Naaman, D. H. Waldeck, Spintronics and Chirality: Spin Selectivity in Electron Transport Through Chiral Molecules, Ann. Rev. Phys. Chem. 2015, 66, 263?81.
  6. O. Ben Dor, S. Yochelis, A. Radko, K. Vankayala, E. Capua, A. Capua, S.-H. Yang, L. T. Baczewski, S. S. P. Parkin, R. Naaman, and Y. Paltiel, Nat. Comm. 2017, 8:14567.
  7. K. Michaeli, V. Varade, R. Naaman, D. Waldeck, Journal of Physics: Condensed Matter, 2017, 29, 103002.
  8. I. Carmeli, K. S. Kumar, O. Hieflero, C. Carmeli, R. Naaman, Angew. Chemie 2014, 53, 8953.
  9. A. Kumar, E. Capua, M. K. Kesharwani, J. M. L. Martin, E. Sitbon, D. H. Waldeck, R.Naaman, PNAS, 2017, 114, 2474.

Date Aug. 3(Fri.), 2018 16:00-17:30
Place Institute for Molecular Science, Research Building, Seminar Room # 201
Title Chiral Molecules and the Electron's Spin- From Spintronics to Enantio-Separation
Speaker Prof. Ron Naaman
Department of Chemical and Biological Physics,Weizmann Institute of Science, Israel

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