Temporal mapping of photochemical reactions and molecular excited states with carbon specificity
- Wang, K. College of Physical Sciences and Technology, Sichuan University, Chengdu, China
- Murahari, P. School of Physics and Astronomy, Queen Mary University of London, Mile End, London UK
- Yokoyama, K. School of Physics and Astronomy, Queen Mary University of London, Mile End, London UK - ISIS Muon Facility, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK
- Lord, J. S. ISIS Muon Facility, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK
- Pratt, F. L. ISIS Muon Facility, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK
- He, J. College of Physical Sciences and Technology, Sichuan University, Chengdu, China
- Schulz, Leander College of Physical Sciences and Technology, Sichuan University, Chengdu, China
- Willis, M. College of Physical Sciences and Technology, Sichuan University, Chengdu, China
- Anthony, J. E. Department of Chemistry, University of Kentucky, Lexington, USA
- Morley, N. A. Department of Materials Science and Engineering, University of Sheffield, UK
- Nuccio, Laura University of Fribourg, Department of Physics and Fribourg Centre for Nanomaterials, Switzerland
- Misquitta, A. School of Physics and Astronomy, Queen Mary University of London, Mile End, London UK
- Dunstan, D. J. School of Physics and Astronomy, Queen Mary University of London, Mile End, London UK
- Shimomura, K. Materials and Life Science Division, J-PARC Center, Tokai, Ibaraki, Japan
- Watanabe, I. RIKEN-RAL, Nishina Centre, 2-1 Hirosawa,Wako, Saitama, Japan
- Zhang, S. College of Physical Sciences and Technology, Sichuan University, Chengdu, China
- Heathcote, P. School of Biological and Chemical Sciences, Queen Mary University of London, Mile End, London, UK
- Drew, Alan J. College of Physical Sciences and Technology, Sichuan University, Chengdu, China - School of Physics and Astronomy, Queen Mary University of London, Mile End, London UK - ISIS Muon Facility, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK
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12.12.2016
Published in:
- Nature Materials. - 2017, vol. 16, no. 4, p. 467–473
English
Photochemical reactions are essential to a large number of important industrial and biological processes. A method for monitoring photochemical reaction kinetics and the dynamics of molecular excitations with spatial resolution within the active molecule would allow a rigorous exploration of the pathway and mechanism of photophysical and photochemical processes. Here we demonstrate that laser-excited muon pump–probe spin spectroscopy (photo-μSR) can temporally and spatially map these processes with a spatial resolution at the single-carbon level in a molecule with a pentacene backbone. The observed time-dependent light-induced changes of an avoided level crossing resonance demonstrate that the photochemical reactivity of a specific carbon atom is modified as a result of the presence of the excited state wavefunction. This demonstrates the sensitivity and potential of this technique in probing molecular excitations and photochemistry.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 288734
- DOI 10.1038/nmat4816
- Persistent URL
- https://folia.unifr.ch/unifr/documents/305594
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