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Synthetically tailoring diamondoids for semiconductor applications

Subject Area Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
Term from 2013 to 2018
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 120401550
 
Final Report Year 2017

Final Report Abstract

The aim of this project was the target-oriented synthesis of new and known functionalized diamondoids (hydrogen-terminated nanodiamonds) and diamondoid cluster structures for the subsequent physical characterization and theoretical examination through the project partners within the Research Unit. We were able to synthesize the first ethylene bridged di- and tri-diamondoids and related hydrocarbons (primarily trishomocubanes for comparison) in sizable amounts (100–200 mg). The chemical and physical properties of these new compounds were examined in detail. We were also able to prepare thiolated diamondoids and, for the first time, their thiono-derivatives (thioketones); the latter were examined with respect to the theoretical prediction that they should be highly luminescent. This was shown to be true from the physical measurements. Finally, we prepared a large array of unsaturated diamondoids, in particular, an exciting adamantane pyrenophane that constitutes a model compound combining the carbon allotropes graphene and diamond in one molecule. Indeed, the combination of an electron emitter (adamantane) and an electron acceptor (pyrenophane) in combination with a highly bent aromatic system leads to a hydrocarbon with an unexpectedly large dipole moment. Determination of this dipole moment and the characterization of this new species as a rectifier component is currently ongoing. This work has been highlighted in ChemistryViews.

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