Erik Rheinfrank
(Institute of Applied Phyics, TU Wien; Physics Department E20, Technical University of Munich)
Actinide-based metal-organic complexes and coordination architectures encompass intriguing properties and functionalities, but are still largely unexplored on surfaces. We report the first in situ synthesis of actinide tetrapyrrole complexes under ultra-high vacuum conditions, both on Ag(111) and h-BN/Cu(111) supports. Exposing a tetraphenylporphyrin (TPP) multilayer to an elemental beam of thorium followed by a temperature-programmed reaction and desorption of surplus molecules yields bis(porphyrinato)thorium (ThTPP$_2$) assemblies. The resulting complexes were characterized by x-ray photoelectron spectroscopy, scanning tunneling microscopy and spectroscopy, temperature-programmed desorption, and complementary density functional theory modeling. Our results give insight into the supramolecular assemblies of ThTPP$_2$ and highlight the conformational and electronic properties of these double-decker compounds with submolecular precision.
Erik Rheinfrank
(Institute of Applied Phyics, TU Wien; Physics Department E20, Technical University of Munich)
Mathias Pörtner
(Physics Department E20, Technical University of Munich)
Maria del Carmen Nuñez Beyerle
(Physics Department E20, Technical University of Munich)
Felix Haag
(Physics Department E20, Technical University of Munich)
Peter S. Deimel
(Physics Department E20, Technical University of Munich)
Francesco Allegretti
(Physics Department E20, Technical University of Munich)
Knud Seufert
(Physics Department E20, Technical University of Munich)
Johannes V. Barth
(Physics Department E20, Technical University of Munich)
Marie-Laure Bocquet
(PASTEUR, Départment de Chimie, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS)
Peter Feulner
(Physics Department E20, Technical University of Munich)
Willi Auwärter
(Physics Department E20, Technical University of Munich)
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