Wiegand Thomas, Liao Wei-Chih, Ong Ta Chung, Däpp Alexander, Cadalbert Riccardo, Copéret Christophe, Böckmann Anja, Meier Beat H. (2017), Protein–nucleotide contacts in motor proteins detected by DNP-enhanced solid-state NMR, in Journal of Biomolecular NMR
Engl Pascal S., Santiago Celine B., Gordon Christopher P., Liao Wei-Chih, Fedorov Alexey, Copéret Christophe, Sigman Matthew S., Togni Antonio (2017), Exploiting and Understanding the Selectivity of Ru-N-Heterocyclic Carbene Metathesis Catalysts for the Ethenolysis of Cyclic Olefins to α,ω-Dienes, in Journal of the American Chemical Society
, 139(37), 13117-13125.
Yamamoto Keishi, Gordon Christopher P., Liao Wei-Chih, Copéret Christophe, Raynaud Christophe, Eisenstein Odile (2017), Orbital Analysis of Carbon-13 Chemical Shift Tensors Reveals Patterns to Distinguish Fischer and Schrock Carbenes, in Angewandte Chemie International Edition
, 56(34), 10127-10131.
Gordon Christopher P., Yamamoto Keishi, Liao Wei-Chih, Allouche Florian, Andersen Richard A., Copéret Christophe, Raynaud Christophe, Eisenstein Odile (2017), Metathesis Activity Encoded in the Metallacyclobutane Carbon-13 NMR Chemical Shift Tensors, in ACS Central Science
, 3(7), 759-768.
Silverio Daniel L., van Kalkeren Henri A., Ong Ta-Chung, Baudin Mathieu, Yulikov Maxim, Veyre Laurent, Berruyer Pierrick, Chaudhari Sachin, Gajan David, Baudouin David, Cavaillès Matthieu, Vuichoud Basile, Bornet Aurélien, Jeschke Gunnar, Bodenhausen Geoffrey, Lesage Anne, Emsley Lyndon, Jannin Sami, Thieuleux Chloé, Copéret Christophe (2017), Tailored Polarizing Hybrid Solids with Nitroxide Radicals Localized in Mesostructured Silica Walls, in Helvetica Chimica Acta
, 100(6), e1700101-e1700101.
Liao Wei-Chih, Ong Ta-Chung, Gajan David, Bernada Florian, Sauvee Clair, Yulikov Maksym, Pucino Margherita, Schowner Roman, Schwarzwalder Martin, Buchmeiser Michael, Jeschke Gunnar, Tordo Paul, Ouari Olivier, Lesage Anne, Emsley Lyndon, Coperet Christophe (2017), Dendritic polarizing agents for DNP SENS, in Chemical Science
Harris James W., Liao Wei-Chih, Di Iorio John R., Henry Alisa M., Ong Ta-Chung, Comas-Vives Aleix, Coperet Christophe, Gounder Rajamani (2017), Molecular Structure and Confining Environment of Sn Sites in Single-Site Chabazite Zeolites, in Chemistry of Materials
Ong Ta Chung, Liao Wei-Chih, Mougel Victor, Gajan David, Lesage Anne, Emsley Lyndon, Copéret Christophe (2016), Atomistic Description of Reaction Intermediates for Supported Metathesis Catalysts Enabled by DNP SENS, in Angew Chem Int Ed
, 55, 4743.
Wolf Patrick, Liao Wei-Chih, Ong Ta-Chung, Valla Maxence, Harris James W., Gounder Rajamani, van der Graaff William N.P., Pidko Evgeny A., Hensen Emiel j.M., Ferrini Paola, Dikmans Jan, Hermans Ive, Coperet Christophe (2016), Identifying Sn Site Heterogeneities Prevalent Among Sn-Beta Zeolites, in Helvetica Chimica Acta
Piveteau Laura, Ong Ta-Chung, Rossini Aaron, Emsley Lyndon, Copéret Christophe, Kovalenko Maksym (2015), Structure of Colloidal Quantum Dots from Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy, in Journal of the American Chemical Society
Whether discussing about life sciences, energy or the environment, surfaces and interfaces of solids play a major role in our everyday life. Nonetheless, it remains a great challenge to determine their structures at a molecular level and thus to provide structure-property relationship, which is at the basis of a rational design and the development of functional solid materials. One of the most power techniques employed today to characterize molecules and materials is X-Ray diffraction, but it requires long-range order, and cannot be applied to gather information about surfaces. Alternatively spectroscopic techniques are possible, and of them solid-state Nuclear Magnetic Resonance (NMR) spectroscopy offers unique opportunities to understand local structures and dynamics. However, this technique suffers from low sensitivity, which makes it impossible to examine most of modern materials. Our group has recently introduced a new method to characterize materials using Dynamic Nuclear Polarization (DNP), which enhances the NMR signals of surface species by one to several orders of magnitudes. This in turn allows experimental time to be decreased from 100 to 20,000 times making possible NMR experiments, which could not have been conceivable before, especially when considering the possibilities to increase by still several order of magnitudes signal enhancements.This emerging technique has already been applied to characterize several challenging systems, ranging from functional materials, catalysts and organic polymorphs, and can be readily applied to a very broad range of materials. We are currently relying on the NMR facility of Bruker in Billerica (USA). However, spectrometer time is today the limiting factor. This proposal has allowed to acquire a “DNP-NMR” spectrometer, in order to develop further this emerging technology at ETH Zürich and to create a platform for characterization of a broad range of advanced materials (battery material, biomaterials, supported catalysts, nanocrystals, MOF’s, zeolites…) opened to tackle challenging problems.