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  High-resolution resonance-enhanced multiphoton photoelectron circular dichroism

Kastner, A., Koumarianou, G., Glodic, P., Samartzis, P. C., Ladda, N., Ranecky, S. T., et al. (2020). High-resolution resonance-enhanced multiphoton photoelectron circular dichroism. Physical Chemistry Chemical Physics, 22(14), 7404-7411. doi:10.1039/D0CP00470G.

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 Creators:
Kastner, Alexander, Author
Koumarianou, Greta, Author
Glodic, Pavle, Author
Samartzis, Peter C., Author
Ladda, Nicolas, Author
Ranecky, Simon T., Author
Ring, Tom, Author
Vasudevan, Sudheendran, Author
Witte, Constantin, Author
Braun, Hendrike, Author
Lee, Han-Gyeol, Author
Senftleben, Arne, Author
Berger, Robert, Author
Park, G. B.1, Author              
Schäfer, T.2, Author              
Baumert, Thomas, Author
Affiliations:
1Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society, ou_578600              
2Department of Dynamics at Surfaces, MPI for biophysical chemistry, Max Planck Society, ou_578600              

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 Abstract: Photoelectron circular dichroism (PECD) is a highly sensitive enantiospecific spectroscopy for studying chiral molecules in the gas phase using either single-photon ionization or multiphoton ionization. In the short pulse limit investigated with femtosecond lasers, resonance-enhanced multiphoton ionization (REMPI) is rather instantaneous and typically occurs simultaneously via more than one vibrational or electronic intermediate state due to limited frequency resolution. In contrast, vibrational resolution in the REMPI spectrum can be achieved using nanosecond lasers. In this work, we follow the high-resolution approach using a tunable narrow-band nanosecond laser to measure REMPI-PECD through distinct vibrational levels in the intermediate 3s and 3p Rydberg states of fenchone. We observe the PECD to be essentially independent of the vibrational level. This behaviour of the chiral sensitivity may pave the way for enantiomer specific molecular identification in multi-component mixtures: one can specifically excite a sharp, vibrationally resolved transition of a distinct molecule to distinguish different chiral species in mixtures.

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Language(s): eng - English
 Dates: 2020-03-16
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1039/D0CP00470G
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Title: Physical Chemistry Chemical Physics
Source Genre: Journal
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Pages: - Volume / Issue: 22 (14) Sequence Number: - Start / End Page: 7404 - 7411 Identifier: -