Hannover 2020 – scientific programme
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MO: Fachverband Molekülphysik
MO 7: Clusters II (joint session MO/A)
MO 7.5: Talk
Tuesday, March 10, 2020, 15:00–15:15, f142
Spectroscopic investigation of gas-phase silvercluster-porphyrin hybrides — •Carl Frederic Ussling1, Tobias Bischoff1, Andre Knecht1, Andrea Merli1, Merle I. S. Röhr2, Polina G. Lisinetskaya2, Roland Mitrić2, and Thomas Möller1 — 1Institut für Optik und Atomare Physik, Technische Universität Berlin — 2Institut für Physikalische und Theoretische Chemie, Universität Würzburg
In the last decades the size and structure-dependent optical properties of noble metal clusters have been widely investigated [1][2].
In the smallest size regime, both the cluster geometry and optical properties turned out to be particularly effected by the number of constituents [3]. Due to their strong UV and Vis absorption it has been predicted, that small silver clusters could be useful to develop new biomolecular sensors [4]. Hybrid systems consisting of small metal clusters and small molecular units have been developed and their optical behavior experimentally explored [5].
We investigated the possibility to combine small cationic silver clusters with single porphyrins in a collision cell and studied first the optical properties of Ag3[Ag(OEP)]+ in the UV range.
[1] E. M. Fernández et al., Phys. Rev. B 70, 165403 (2004)
[2] C. Sönnichsen et al., New J. Phys. 4, 93 (2002)
[3] K. L. Kelly et al., J. Phys. Chem. B 107, 668 (2003)
[4] T. Tabarin et al., J. Chem. Phys. 127, 134301 (2007)
[5] V. Bonačić-Kouteckỳ et al., Phys. Chem. Chem. 14, 9282 (2012)