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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Zojer, Egbert
Graz University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2021Avoiding the Center-Symmetry Trapcitations
- 2021Avoiding the Center-Symmetry Trap: Programmed Assembly of Dipolar Precursors into Porous, Crystalline Molecular Thin Films
- 2021Porous Honeycomb Self-Assembled Monolayerscitations
- 2021Porous honeycomb self-assembled monolayers:tripodal adsorption and hidden chirality of carboxylate anchored triptycenes on Agcitations
- 2021Porous honeycomb self-assembled monolayers : tripodal adsorption and hidden chirality of carboxylate anchored triptycenes on Agcitations
- 2017Fully Atomistic Understanding of the Electronic and Optical Properties of a Prototypical Doped Charge-Transfer Interfacecitations
- 2017Fully atomistic understanding of the electronic and optical properties of a prototypical doped charge-transfer interfacecitations
- 2016Transition voltages respond to synthetic reorientation of embedded dipoles in self-assembled monolayerscitations
Places of action
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article
Avoiding the Center-Symmetry Trap
Abstract
<p>Liquid-phase, quasi-epitaxial growth is used to stack asymmetric, dipolar organic compounds on inorganic substrates, permitting porous, crystalline molecular materials that lack inversion symmetry. This allows material fabrication with built-in electric fields. A new programmed assembly strategy based on metal–organic frameworks (MOFs) is described that facilitates crystalline, noncentrosymmetric space groups for achiral compounds. Electric fields are integrated into crystalline, porous thin films with an orientation normal to the substrate. Changes in electrostatic potential are detected via core-level shifts of marker atoms on the MOF thin films and agree with theoretical results. The integration of built-in electric fields into organic, crystalline, and porous materials creates possibilities for band structure engineering to control the alignment of electronic levels in organic molecules. Built-in electric fields may also be used to tune the transfer of charges from donors loaded via programmed assembly into MOF pores. Applications include organic electronics, photonics, and nonlinear optics, since the absence of inversion symmetry results in a clear second-harmonic generation signal.</p>