Journal article
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Temporal mapping of photochemical reactions and molecular excited states with carbon specificity
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Wang, K.
College of Physical Sciences and Technology, Sichuan University, Chengdu, China
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Murahari, P.
School of Physics and Astronomy, Queen Mary University of London, Mile End, London UK
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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
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Lord, J. S.
ISIS Muon Facility, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK
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Pratt, F. L.
ISIS Muon Facility, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK
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He, J.
College of Physical Sciences and Technology, Sichuan University, Chengdu, China
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Schulz, Leander
College of Physical Sciences and Technology, Sichuan University, Chengdu, China
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Willis, M.
College of Physical Sciences and Technology, Sichuan University, Chengdu, China
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Anthony, J. E.
Department of Chemistry, University of Kentucky, Lexington, USA
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Morley, N. A.
Department of Materials Science and Engineering, University of Sheffield, UK
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Nuccio, Laura
University of Fribourg, Department of Physics and Fribourg Centre for Nanomaterials, Switzerland
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Misquitta, A.
School of Physics and Astronomy, Queen Mary University of London, Mile End, London UK
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Dunstan, D. J.
School of Physics and Astronomy, Queen Mary University of London, Mile End, London UK
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Shimomura, K.
Materials and Life Science Division, J-PARC Center, Tokai, Ibaraki, Japan
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Watanabe, I.
RIKEN-RAL, Nishina Centre, 2-1 Hirosawa,Wako, Saitama, Japan
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Zhang, S.
College of Physical Sciences and Technology, Sichuan University, Chengdu, China
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Heathcote, P.
School of Biological and Chemical Sciences, Queen Mary University of London, Mile End, London, UK
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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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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.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Physique
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Language
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Classification
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Physics
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/305594
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