| People | Locations | Statistics |
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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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Widmer, Roland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Asymmetric molecular adsorption and regioselective bond cleavage on chiral PdGa crystalscitations
- 2024Asymmetric Molecular Adsorption and Regioselective Bond Cleavage on Chiral PdGa Crystalscitations
- 2023Electronic Decoupling and Single‐Molecule Charging of C<sub>60</sub> on h‐BN/Rh(111)citations
- 2023Electronic decoupling and single‐molecule charging of C 60 on h‐BN/Rh(111)citations
- 2022Asymmetric elimination reaction on chiral metal surfacescitations
- 2021Asymmetric azide-alkyne Huisgen cycloaddition on chiral metal surfacescitations
- 2020Near‐enantiopure trimerization of 9‐Ethynylphenanthrene on a chiralmetal surfacecitations
- 2018Oxidized Co–Sn nanoparticles as long-lasting anode materials for lithium-ion batteriescitations
- 2015Highly enantioselective adsorption of small prochiral molecules on a chiral intermetallic compoundcitations
- 2015Monodisperse SnSb nanocrystals for Li-ion and Na-ion battery anodes: synergy and dissonance between Sn and Sbcitations
- 2014Adsorption of small hydrocarbons on the three-fold PdGa surfaces: the road to selective hydrogenationcitations
- 2014Ensemble effect evidenced by CO adsorption on the 3-fold PdGa surfacescitations
- 2012Surface investigation of intermetallic PdGa(1̅ 1̅ 1̅)citations
- 2012How to control the selectivity of palladium-based catalysts in hydrogenation reactions: the role of subsurface chemistrycitations
- 2009Structure investigation of the (100) surface of the orthorhombic Al13Co4 crystalcitations
- 2009Growth of crystalline TiO 2 by plasma enhanced chemical vapor depositioncitations
- 2007Electrolytic in situ STM investigation of h-BN-nanomeshcitations
Places of action
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article
Asymmetric Molecular Adsorption and Regioselective Bond Cleavage on Chiral PdGa Crystals
Abstract
Homogenous enantioselective catalysis is nowadays the cornerstone in the manufacturing of enantiopure substances, but its technological implementation suffers from well‐known impediments like the lack of endurable catalysts exhibiting long‐term stability. The catalytically active intermetallic compound Palladium‐Gallium (PdGa), conserving innate bulk chirality on its surfaces, represent a promising system to study asymmetric chemical reactions by heterogeneous catalysis, with prospective relevance for industrial processes. Here, this work investigates the adsorption of 10,10′‐dibromo‐9,9′‐bianthracene (DBBA) on the PdGa:A() Pd<jats:sub>3</jats:sub>‐terminated surface by means of scanning tunneling microscopy (STM) and spectroscopy (STS). A highly enantioselective adsorption of the molecule evolving into a near 100% enantiomeric excess below room temperature is observed. This exceptionally high enantiomeric excess is attributed to temperature activated conversion of the S to the R chiral conformer. Tip‐induced bond cleavage of the R conformer shows a very high regioselectivity of the DBBA debromination. The experimental results are interpreted by density functional theory atomistic simulations. This work extends the knowledge of chirality transfer onto the enantioselective adsorption of non‐planar molecules and manifests the ensemble effect of PdGa surfaces resulting in robust regioselective debromination.</jats:p>