Journal article
Dendritic polarizing agents for DNP SENS.
- Liao WC Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland . Email: ccoperet@inorg.chem.ethz.ch.
- Ong TC Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland . Email: ccoperet@inorg.chem.ethz.ch.
- Gajan D Centre de RMN à Très Hauts Champs , Institut de Sciences Analytiques (CNRS/ENS Lyon/UCB Lyon 1) , Université de Lyon , 69100 Villeurbanne , France.
- Bernada F Aix-Marseille Univ , CNRS , ICR UMR 7273 , Marseille , 13013 , France.
- Sauvée C Aix-Marseille Univ , CNRS , ICR UMR 7273 , Marseille , 13013 , France.
- Yulikov M Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland . Email: ccoperet@inorg.chem.ethz.ch.
- Pucino M Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland . Email: ccoperet@inorg.chem.ethz.ch.
- Schowner R Institut für Polymerchemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany.
- Schwarzwälder M Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland . Email: ccoperet@inorg.chem.ethz.ch.
- Buchmeiser MR Institut für Polymerchemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany.
- Jeschke G Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland . Email: ccoperet@inorg.chem.ethz.ch.
- Tordo P Aix-Marseille Univ , CNRS , ICR UMR 7273 , Marseille , 13013 , France.
- Ouari O Aix-Marseille Univ , CNRS , ICR UMR 7273 , Marseille , 13013 , France.
- Lesage A Centre de RMN à Très Hauts Champs , Institut de Sciences Analytiques (CNRS/ENS Lyon/UCB Lyon 1) , Université de Lyon , 69100 Villeurbanne , France.
- Emsley L Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland.
- Copéret C Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland . Email: ccoperet@inorg.chem.ethz.ch.
- 2017-04-29
Published in:
- Chemical science. - 2017
English
Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy (DNP SENS) is an effective method to significantly improve solid-state NMR investigation of solid surfaces. The presence of unpaired electrons (polarizing agents) is crucial for DNP, but it has drawbacks such as leading to faster nuclear spin relaxation, or even reaction with the substrate under investigation. The latter can be a particular problem for heterogeneous catalysts. Here, we present a series of carbosilane-based dendritic polarizing agents, in which the bulky dendrimer can reduce the interaction between the solid surface and the free radical. We thereby preserve long nuclear T'2 of the surface species, and even successfully enhance a reactive heterogeneous metathesis catalyst.
- Language
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- English
- Open access status
- gold
- Identifiers
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- DOI 10.1039/c6sc03139k
- PMID 28451187
- Persistent URL
- https://folia.unifr.ch/global/documents/136914
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