Dresden 2026 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 12: Scanning probe microscopy: light matter interaction at atomic scales
O 12.7: Vortrag
Montag, 9. März 2026, 16:30–16:45, HSZ/0403
Dipole-dipole coupling in assembled ZnPc-molecule clusters — •Jakob Kuhlke1, Quentin Stein2, Song Jiang2, Georg Traeger1, Fabrice Scheurer2, Tomáš Neuman3, Katharina Kaiser1, and Guillaume Schull2 — 1Georg-August University Göttingen, IV. Physical Institute, Göttingen — 2CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, Département Surfaces et Interfaces, Strasbourg — 3Institute of Physics, Czech Academy of Sciences Cukrovarnická 10, Prague, 16200, Czech Republic
Dipole-coupled molecules provide a promising platform to build functional structures with tailored optical properties. We use ZnPc molecules as building blocks to investigate the coupling of molecular dipoles in different molecular assemblies.
In contrast to ZnPc monomers, dimers and chains of ZnPc molecules exhibit sharper and red-shifted emission peaks, a phenomenon known as superradiance [1], [2], [3]. Here, we extend this approach to more arbitrary clusters. We use scanning tunneling microscopy-induced luminescence (STML) to study the optical properties of several cluster configurations on the nanometer scale.
[1] L. Yang, et al. Physical Review Letters 122.23 (2019)
[2] Z. Yang, et al. Nature 531.7596 : 623-627 (2016).
[3] J. Dolezal, et al. ACS nano 16.1 : 1082-1088 (2021).
Keywords: delocalized excitons; dipole-dipole coupling; self-assembled molecular clusters; STM; ZnPc