Professor John Lupton
Faculty of PhysicsUniversity of Regensburg
Universitaetsstrasse 31
93053 Regensburg
Germany
| Phone: | +49 941 943-2081 |
| Fax: | +49 941 943-2021 |
| Secretary: | +49 941 943-2080 |
Email: john.lupton(at)physik.uni-regensburg.de
Research Interests
Our research involves the use of subensemble techniques – single-molecule spectroscopy, magnetic resonance, and ultrafast fluorescence – to investigate the role of nanoscale order and shape on charge and energy migration in pi-conjugated macromolecules, semiconductor nanocrystals, and metallic nanoparticles.
The overarching theme, condensed in the term “molecular mesoscopics”, is to identify collective optoelectronic phenomena which arise out of the superposition of characteristics of individual building blocks. For example, nanoparticles or polymer molecules may couple to each other over large distances, leading to highly local nano-optic phenomena which arise from electronic delocalization on length scales which are orders of magnitude larger. The activities require the development of new sensitive spectroscopies along with collaborations with synthetic groups to develop custom-defined molecular building blocks with specific functionality.
Curriculum Vitae
| 1997 | B.Sc. in Physics from Durham University (UK); Award of Henry Walters Prize and Chalmers Prize in Experimental Physics |
| 1997 | CERN Summer student |
| 1999 | DAAD Research Fellow, University of Marburg (Prof. H. Bässler) |
| 2000 | Visiting Scientist, University of Rochester, NY (Prof. S. Mukamel) |
| 2000 | Ph. D. in Physics, University of Durham (Prof. I. Samuel) |
| 2000 | Research Fellow, University of St. Andrews (Prof. I. Samuel) |
| 2001 | Project group leader, Max Planck Institute for Polymer Research, Mainz (Prof. G. Wegner) |
| 2002 | University Assistant, Photonics and Optoelectronics Group, University of Munich |
| 2005 | Offer of a W2/C3 Professorship (University of Kiel) as well as a Professorship (University of Utah) |
| 2006 | Associate Professor of Physics, University of Utah |
| 2006 | Award of the Max Auwärter Prize through the Austrian Physical Society |
| 2008 | Award of the David & Lucile Packard Foundation Fellowship for Science and Engineering |
| 2010 | RCSA Scialog award |
| 2010 | Full Professor of Physics and Astronomy, University of Utah |
| 2010 | Professor of Physics (Chair), University of Regensburg |
| 2011 | Research Professor of Physics and Astronomy, University of Utah |
| 2012 | ERC Starting Grant |
| 2015 | Offer of a Chair in Physical Chemistry, University of Cologne (declined) |
| 2015-17 | Dean, Department of Physics, Regensburg |
| 2023-25 | Dean, Department of Physics, Regensburg |
Selected Publications
- Excitonic resonances control the temporal dynamics of nonlinearoptical wave mixing in monolayer semiconductors (with J. Bauer, L.Chen, P. Wilhelm, K. Watanabe, T. Taniguchi, S. Bange, K.-Q. Lin) Nature Phot. 16, 777 (2022)
- Atomically resolved single-molecule triplet quenching (with J. Peng,S. Sokolov, D. Hernangómez-Pérez, F. Evers, L. Gross, J. Repp) Science 373, 452 (2021)
- Narrow-band high-lying excitons with negative-mass electrons inmonolayer WSe2 (with K.-Q. Lin, C. S. Ong, S. Bange, P. E. FariaJunior, B. Peng, J. D. Ziegler, J. Zipfel, C. Bäuml, N. Paradiso, K.Watanabe, T. Taniguchi, C. Strunk, B. Monserrat, J. Fabian, A.Chernikov, D. Y. Qiu, S. G. Louie)Nature Comm. 12, 5500 (2021)
- Quantum interference in second-harmonic generation from monolayerWSe2 (with K.-Q. Lin, S. Bange) Nature Phys. 15, 242 (2019)
- Molecular excitonic seesaws (with P. Wilhelm, J. Schedlbauer, F.Hinderer, D. Hennen, S. Höger, J. Vogelsang) PNAS115, E3626 (2018)
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Spectral focusing of broadband silver electroluminescence in nanoscopic FRET-LEDs (with R. P. Puchert, F. Steiner, G. Plechinger, F. Hofmann, I. Caspers, J. Kirschner, P. Nagler, A. Chernikov, C. Schüller, T. Korn, J. Vogelsang, S. Bange)
Nature Nano. 12, 637 (2017) -
Mesoscopic quantum emitters from deterministic aggregates of conjugated polymers (with T. Stangl, P. Wilhelm, K. Remmerssen, S. Höger, J. Vogelsang)
PNAS 112, E5560 (2015) -
The spin-Dicke effect in OLED magnetoresistance (with D. P. Waters, G. Joshi, M. Kavand, M. E. Limes, H. Malissa, P. L. Burn, C. Boehme)
Nature Phys. 11, 910 (2015) -
Room-temperature coupling between electrical currents and nuclear spins in OLEDs (with H. Malissa, M. Kavand, D. P. Waters, K. J. van Schooten, P. L. Burn, Z. V. Vardeny, B. Saam, C. Boehme)
Science 345, 1487 (2014) -
Fluctuating exciton localisation in giant pi-conjugated spoked-wheel macrocycles (with V. Aggarwal, A. Thiessen, A. Idelson, D. Kalle, D. Würsch, T. Stangl, F. Steiner, S.-S. Jester, J. Vogelsang, S. Höger)
Nature Chem. 5, 964 (2013) -
Unraveling the chromophoric disorder of poly(3-hexylthiophene) (with A. Thiessen, J. Vogelsang, T. Adachi, F. Steiner, D. Vanden Bout)
PNAS 110, E3550 (2013) -
Metal-free OLED triplet emitters by side-stepping Kasha's rule (with D. Chaudhuri, E. Sigmund, A. Meyer, L. Röck, P. Klemm, S. Lautenschlager, A. Schmid, S. R. Yost, T. Van Voorhis, S. Bange, S. Höger)
Angew. Chem. Int. Ed. 52, 13449 (2013) -
The role of particle morphology in interfacial energy transfer in CdSe/CdS heterostructure nanocrystals (with N. J. Borys, M. J. Walter, J. Huang, D. V. Talapin)
Science 330, 1371 (2010) -
Unraveling the inhomogeneously broadened absorption spectrum of conjugated polymers by single-molecule light-harvesting action spectroscopy (with M. J. Walter)
Phys. Rev. Lett. 103, 167401 (2009) -
Spin Rabi flopping in the photocurrent of a polymer light-emitting diode (with D. R. McCamey, H. A. Seipel, S. Y. Paik, M. J. Walter, N. J. Borys, C. Boehme)
Nature Mat. 7, 723 (2008) -
Laser Technology: Over the Rainbow
Nature 453, 459 (2008) -
Room-temperature exciton storage in elongated semiconductor nanocrystals (with R. M. Kraus, P. G. Lagoudakis, A. L. Rogach, D. V. Talapin, H. Weller, J. Feldmann)
Phys. Rev. Lett. 98, 017401 (2007) -
Electrical control of Förster energy transfer (with K. Becker, J. Müller, D. V. Talapin, A. L. Rogach, H. Weller, J. Feldmann)
Nature Mat. 5, 777 (2006) -
How single conjugated polymer molecules respond to electric fields (with F. Schindler, J. Müller, J. Feldmann, U. Scherf)
Nature Mat. 5, 141 (2006) -
Spin-conserving carrier recombination in conjugated polymers (with M. Reufer, M. J. Walter, P. G. Lagoudakis, A. B. Hummel, J. S. Kolb, H. G. Roskos, U. Scherf)
Nature Mat. 4, 340 (2005) -
A universal picture of chromophores in pi-conjugated polymers derived from single molecule spectroscopy (with F. Schindler, J. Feldmann, U. Scherf)
PNAS 101, 14695 (2004)