Matter-wave dualism is a fundamental concept in quantum physics. The observation of wave properties of heavy organic molecules can be used to approach the borderline between classical and quantum physics. Using a porphyrin library we were able to push the mass limit of interfering particles above 10'000 g/mol.1,2 Motivated by the prospect to study quantum interference of even higher masses in a novel interferometer porphyrin-tetramer (TPor(Zn)1Rn  ) and the fully conjugated pentamer (TPor2Rn ) were synthesized. Using a modular fourfold Sonogashira cross-coupling we were able to synthesize both multi-porphyrin systems. These libraries should push the mass limit of interfering particles above 20'000 g/mol. To perform the challenging quantum interference experiments using the novel interferometer photoionization and evaporation studies are performed. These studies show first promising ionization properties of the molecules.Scheme 1:   Porphyrin Tetramers (TPor(Zn)1Rn  and TPor2Rn  ).(1) Eibenberger, S.; Gerlich, S.; Arndt, M.; Mayor, M.; T�xen, J. Phys. Chem. Chem. Phys. 2013  , 15, 14696�14700.(2) Gerlich, S.; Eibenberger, S.; Tomandl, M.; Nimmrichter, S.; Hornberger, K.; Fagan, P. J.; T�xen, J.; Mayor, M.; Arndt, M. Nat. Commun. 2011  , 2, 263.

Synthesis of photoionizable porphyrin systems for quantum interference experiments

248th National Meeting (2014)

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