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Hartweg S, Garcia GA, Božanić DK, Nahon L. Condensation Effects on Electron Chiral Asymmetries in the Photoionization of Serine: From Free Molecules to Nanoparticles. J Phys Chem Lett 2021; 12:2385-2393. [PMID: 33660503 DOI: 10.1021/acs.jpclett.1c00258] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Structural changes at the molecular level, occurring at the onset of condensation, can be probed by angle-resolved valence photoelectron spectroscopy, which is inherently sensitive to the electronic structure. For larger condensed systems like aerosol particles, the observation of intrinsic angular anisotropies in photoemission (β parameters) is challenging due to the strong reduction of their magnitude by electron transport effects. Here, we use a less common, more sensitive observable in the form of the chiral asymmetry parameter to perform a comparative study of the VUV photoelectron spectroscopy and photoelectron circular dichroism (PECD) between pure gas phase enantiomers of the amino acid serine and their corresponding homochiral nanoparticles. We observe a relatively large (1%) and strongly kinetic energy-dependent asymmetry, discussed in terms of the emergence of local order and conformational changes potentially counterbalancing the loss of angular information due to electron transport scattering. This demonstrates the potential of PECD as a sensitive probe of the condensation effects from the gas phase to bulk-like chiral aerosol particles surpassing the potential of conventional photoemission observables such as β parameters.
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Affiliation(s)
- Sebastian Hartweg
- Synchrotron SOLEIL, l'Orme des Merisiers, Saint Aubin BP 48, 91192 Cedex, Gif sur Yvette, France
| | - Gustavo A Garcia
- Synchrotron SOLEIL, l'Orme des Merisiers, Saint Aubin BP 48, 91192 Cedex, Gif sur Yvette, France
| | - Dušan K Božanić
- Department of Radiation Chemistry and Physics, "VINČA" Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, 11001 Belgrade, Serbia
| | - Laurent Nahon
- Synchrotron SOLEIL, l'Orme des Merisiers, Saint Aubin BP 48, 91192 Cedex, Gif sur Yvette, France
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Gartmann TE, Hartweg S, Ban L, Chasovskikh E, Yoder BL, Signorell R. Electron scattering in large water clusters from photoelectron imaging with high harmonic radiation. Phys Chem Chem Phys 2018; 20:16364-16371. [PMID: 29872831 DOI: 10.1039/c8cp02148a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Low-energy electron scattering in water clusters (H2O)n with average cluster sizes of n < 700 is investigated by angle-resolved photoelectron spectroscopy using high harmonic radiation at photon energies of 14.0, 20.3, and 26.5 eV for ionization from the three outermost valence orbitals. The measurements probe the evolution of the photoelectron anisotropy parameter β as a function of cluster size. A remarkably steep decrease of β with increasing cluster size is observed, which for the largest clusters reaches liquid bulk values. Detailed electron scattering calculations reveal that neither gas nor condensed phase scattering can explain the cluster data. Qualitative agreement between experiment and simulations is obtained with scattering calculations that treat cluster scattering as an intermediate case between gas and condensed phase scattering.
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Affiliation(s)
- Thomas E Gartmann
- Department of Chemistry and Applied Biosciences, Laboratory of Physical Chemistry, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland.
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Rander T, Lindblad A, Bradeanu I, Öhrwall G, Svensson S, Björneholm O. Suppression of the molecular ultra-fast dissociation in bromomethane clusters. J Chem Phys 2014; 141:224305. [DOI: 10.1063/1.4903455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- T. Rander
- Department of Physics, Uppsala University, P.O. Box 530, SE-751 21 Uppsala, Sweden
| | - A. Lindblad
- Department of Physics, Uppsala University, P.O. Box 530, SE-751 21 Uppsala, Sweden
| | - I. Bradeanu
- Department of Physics, Uppsala University, P.O. Box 530, SE-751 21 Uppsala, Sweden
| | - G. Öhrwall
- MAX lab, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - S. Svensson
- Department of Physics, Uppsala University, P.O. Box 530, SE-751 21 Uppsala, Sweden
| | - O. Björneholm
- Department of Physics, Uppsala University, P.O. Box 530, SE-751 21 Uppsala, Sweden
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Schütte B, Arbeiter M, Fennel T, Vrakking MJJ, Rouzée A. Rare-gas clusters in intense extreme-ultraviolet pulses from a high-order harmonic source. PHYSICAL REVIEW LETTERS 2014; 112:073003. [PMID: 24579594 DOI: 10.1103/physrevlett.112.073003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Indexed: 06/03/2023]
Abstract
We report evidence for two previously unidentified effects in the ionization of rare-gas clusters by intense extreme-ultraviolet pulses. First, electron spectra indicate multistep photoemission with increasing isotropy for larger clusters due to electron-atom collisions. Second, very slow (meV) electrons are interpreted as the first experimental evidence for Rydberg-like atomic state formation in the nanoplasma expansion. Only small fractions of Xe2+ ions were found, in sharp contrast to previous results recorded under comparable conditions [Murphy et al., Phys. Rev. Lett. 101, 203401 (2008).
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Affiliation(s)
- B Schütte
- Max-Born-Institut, Max-Born-Strasse 2A, 12489 Berlin, Germany
| | - M Arbeiter
- Institute of Physics, University of Rostock, Universitäsplatz 3, 18051 Rostock, Germany
| | - Th Fennel
- Institute of Physics, University of Rostock, Universitäsplatz 3, 18051 Rostock, Germany
| | - M J J Vrakking
- Max-Born-Institut, Max-Born-Strasse 2A, 12489 Berlin, Germany
| | - A Rouzée
- Max-Born-Institut, Max-Born-Strasse 2A, 12489 Berlin, Germany
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Signorell R, Yoder BL, West AHC, Ferreiro JJ, Saak CM. Angle-resolved valence shell photoelectron spectroscopy of neutral nanosized molecular aggregates. Chem Sci 2014. [DOI: 10.1039/c3sc53423e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Angle-resolved photoelectron spectroscopy opens a new avenue to probe the orbital character of solutes and solvents from the nanoscale to the bulk.
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Affiliation(s)
- Ruth Signorell
- ETH Zürich
- Laboratory of Physical Chemistry
- Zürich, Switzerland
| | - Bruce L. Yoder
- ETH Zürich
- Laboratory of Physical Chemistry
- Zürich, Switzerland
| | - Adam H. C. West
- ETH Zürich
- Laboratory of Physical Chemistry
- Zürich, Switzerland
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West AHC, Yoder BL, Signorell R. Size-Dependent Velocity Map Photoelectron Imaging of Nanosized Ammonia Aerosol Particles. J Phys Chem A 2013; 117:13326-35. [PMID: 23919276 DOI: 10.1021/jp406313a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Adam H. C. West
- Laboratory of Physical Chemistry, ETH Zürich, Wolfgang-Pauli-Strasse 10, CH-8093 Zürich,
Switzerland
| | - Bruce L. Yoder
- Laboratory of Physical Chemistry, ETH Zürich, Wolfgang-Pauli-Strasse 10, CH-8093 Zürich,
Switzerland
| | - Ruth Signorell
- Laboratory of Physical Chemistry, ETH Zürich, Wolfgang-Pauli-Strasse 10, CH-8093 Zürich,
Switzerland
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Zhang C, Andersson T, Förstel M, Mucke M, Arion T, Tchaplyguine M, Björneholm O, Hergenhahn U. The photoelectron angular distribution of water clusters. J Chem Phys 2013; 138:234306. [PMID: 23802959 DOI: 10.1063/1.4809748] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Chaofan Zhang
- Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
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Wu X, Sun Y, Gao YC, Wu GH. Structural transitions in mixed ternary noble gas clusters. J Mol Model 2013; 19:3119-25. [PMID: 23609225 DOI: 10.1007/s00894-013-1847-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 04/02/2013] [Indexed: 11/29/2022]
Affiliation(s)
- Xia Wu
- School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246011, People's Republic of China.
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Sun X, Yamauchi Y. The geometric and electronic structure of Xe-adsorbed Fe(001) surface by first-principles calculations. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.07.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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