14.01.20 - Sabine Richert "Electronic communication in organic functional materials probed by pulse EPR spectroscopy"
| When |
Jan 14, 2020
from 01:00 PM to 02:00 PM |
|---|---|
| Where | HS II, Physical High Rise |
| Contact Name | Simone Ortolf |
| Contact Phone | 203 97666 |
| Add event to calendar |
 vCal iCal
|
Electronic communication in organic functional materials probed by pulse EPR spectroscopy
Electron and spin delocalisation in highly conjugated structures is of significant current interest for applications in the field of molecular electronics and spintronics. In the study of materials suitable for such applications, modern pulse electron paramagnetic resonance (EPR) spectroscopy has proven to be an invaluable tool due to its capability to differentiate individual spin states and characterise their interactions with high sensitivity.
After a brief general introduction to different EPR techniques and their applications, I will focus on two distinct topics concerned with (i) through-bond and through-space electronic communication in copper-containing porphyrin oligomers [1-4] and (ii) spin-information transfer in photogenerated multi-spin systems [5-9].
The general aim of the presented studies is to acquire a fundamental understanding of the spin dynamics and structure-function relationships in organic multi-spin systems. Any future developments in the field of molecular spintronics will undoubtedly profit from this knowledge, enabling an increased control over the spin interactions and dynamics on a molecular level.
[1] S. Richert, J. Cremers, H. L. Anderson, C. R. Timmel Chem. Sci. 2016, 7, 6952−6960.
[2] S. Richert, J. Cremers, I. Kuprov, M. D. Peeks, H. L. Anderson, C. R. Timmel Nat. Commun. 2017, 8, 14842.
[3] S. Richert, I. Kuprov, M. D. Peeks, E. A. Suturina, J. Cremers, H. L. Anderson, C. R. Timmel Phys. Chem. Chem. Phys. 2017, 19, 16057−16061.
[4] N. Wili, S. Richert, B. Limburg, S. J. Clarke, H. L. Anderson, C. R. Timmel, G. Jeschke Phys. Chem. Chem. Phys. 2019, 21, 11676−11688.
[5] J. Fujisawa, K. Ishii, Y. Ohba, S. Yamauchi, M. Fuhs, K. Möbius J. Phys. Chem. A 1999, 103, 213–216.
[6] S. Yamauchi Bull. Chem. Soc. Jpn. 2004, 77, 1255–1268.
[7] A. Kawai, K.J. Shibuya J. Photochem. Photobiol. C 2006, 7, 89–103.
[8] M. T. Colvin, E. M. Giacobbe, B. Cohen, T. Miura, A. M. Scott, M. R. Wasielewski J. Phys. Chem. A 2010, 114, 1741–1748.
[9] N. Fleck, T. Hett, J. Brode, A. Meyer, S. Richert, O. Schiemann J. Org. Chem. 2019, 84, 3293–3303.
