1
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Gabalski I, Allum F, Seidu I, Britton M, Brenner G, Bromberger H, Brouard M, Bucksbaum PH, Burt M, Cryan JP, Driver T, Ekanayake N, Erk B, Garg D, Gougoula E, Heathcote D, Hockett P, Holland DMP, Howard AJ, Kumar S, Lee JWL, Li S, McManus J, Mikosch J, Milesevic D, Minns RS, Neville S, Atia-Tul-Noor, Papadopoulou CC, Passow C, Razmus WO, Röder A, Rouzée A, Simao A, Unwin J, Vallance C, Walmsley T, Wang J, Rolles D, Stolow A, Schuurman MS, Forbes R. Time-Resolved X-ray Photoelectron Spectroscopy: Ultrafast Dynamics in CS 2 Probed at the S 2p Edge. J Phys Chem Lett 2023; 14:7126-7133. [PMID: 37534743 PMCID: PMC10431593 DOI: 10.1021/acs.jpclett.3c01447] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 07/17/2023] [Indexed: 08/04/2023]
Abstract
Recent developments in X-ray free-electron lasers have enabled a novel site-selective probe of coupled nuclear and electronic dynamics in photoexcited molecules, time-resolved X-ray photoelectron spectroscopy (TRXPS). We present results from a joint experimental and theoretical TRXPS study of the well-characterized ultraviolet photodissociation of CS2, a prototypical system for understanding non-adiabatic dynamics. These results demonstrate that the sulfur 2p binding energy is sensitive to changes in the nuclear structure following photoexcitation, which ultimately leads to dissociation into CS and S photoproducts. We are able to assign the main X-ray spectroscopic features to the CS and S products via comparison to a first-principles determination of the TRXPS based on ab initio multiple-spawning simulations. Our results demonstrate the use of TRXPS as a local probe of complex ultrafast photodissociation dynamics involving multimodal vibrational coupling, nonradiative transitions between electronic states, and multiple final product channels.
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Affiliation(s)
- Ian Gabalski
- Stanford
PULSE Institute, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
- Department
of Applied Physics, Stanford University, Stanford, California 94305, United States
| | - Felix Allum
- Stanford
PULSE Institute, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
- Linac
Coherent Light Source, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
- Chemistry
Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K.
| | - Issaka Seidu
- National
Research Council Canada, Ottawa, Ontario K1A 0R6, Canada
| | - Mathew Britton
- Stanford
PULSE Institute, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
| | - Günter Brenner
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | | | - Mark Brouard
- Chemistry
Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K.
| | - Philip H. Bucksbaum
- Stanford
PULSE Institute, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
- Department
of Applied Physics, Stanford University, Stanford, California 94305, United States
- Department
of Physics, Stanford University, Stanford, California 94305, United States
| | - Michael Burt
- Chemistry
Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K.
| | - James P. Cryan
- Stanford
PULSE Institute, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
- Linac
Coherent Light Source, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
| | - Taran Driver
- Stanford
PULSE Institute, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
- Linac
Coherent Light Source, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
| | - Nagitha Ekanayake
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Benjamin Erk
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Diksha Garg
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Eva Gougoula
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - David Heathcote
- Chemistry
Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K.
| | - Paul Hockett
- National
Research Council Canada, Ottawa, Ontario K1A 0R6, Canada
| | | | - Andrew J. Howard
- Stanford
PULSE Institute, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
- Department
of Applied Physics, Stanford University, Stanford, California 94305, United States
| | - Sonu Kumar
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Jason W. L. Lee
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Siqi Li
- Linac
Coherent Light Source, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
| | - Joseph McManus
- Chemistry
Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K.
| | - Jochen Mikosch
- Institut
für Physik, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - Dennis Milesevic
- Chemistry
Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K.
| | - Russell S. Minns
- School
of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K.
| | - Simon Neville
- National
Research Council Canada, Ottawa, Ontario K1A 0R6, Canada
| | - Atia-Tul-Noor
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | | | - Christopher Passow
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Weronika O. Razmus
- School
of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K.
| | - Anja Röder
- Max-Born-Institute, Max-Born-Straße 2A, 12489 Berlin, Germany
| | - Arnaud Rouzée
- Max-Born-Institute, Max-Born-Straße 2A, 12489 Berlin, Germany
| | - Alcides Simao
- Deutsches
Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - James Unwin
- Chemistry
Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K.
| | - Claire Vallance
- Chemistry
Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K.
| | - Tiffany Walmsley
- Chemistry
Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K.
| | - Jun Wang
- Stanford
PULSE Institute, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
- Department
of Applied Physics, Stanford University, Stanford, California 94305, United States
| | - Daniel Rolles
- J.
R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, United States
| | - Albert Stolow
- National
Research Council Canada, Ottawa, Ontario K1A 0R6, Canada
- Department
of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
- Department
of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
- NRC-uOttawa Joint Centre
for Extreme Photonics, Ottawa, Ontario K1A 0R6, Canada
| | - Michael S. Schuurman
- National
Research Council Canada, Ottawa, Ontario K1A 0R6, Canada
- Department
of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Ruaridh Forbes
- Linac
Coherent Light Source, SLAC National Accelerator
Laboratory, Menlo
Park, California 94025, United States
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2
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Acheson K, Kirrander A. Robust Inversion of Time-Resolved Data via Forward-Optimization in a Trajectory Basis. J Chem Theory Comput 2023; 19:2721-2734. [PMID: 37129988 DOI: 10.1021/acs.jctc.2c01113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
An inversion method for time-resolved data from ultrafast experiments is introduced, based on forward-optimization in a trajectory basis. The method is applied to experimental data from X-ray scattering of the photochemical ring-opening reaction of 1,3-cyclohexadiene and electron diffraction of the photodissociation of CS2. In each case, inversion yields a model that reproduces the experimental data, identifies the main dynamic motifs, and agrees with independent experimental observations. Notably, the method explicitly accounts for continuity constraints and is robust even for noisy data.
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Affiliation(s)
- Kyle Acheson
- EaStCHEM, School of Chemistry and Centre for Science at Extreme Conditions, University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Adam Kirrander
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
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3
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Gabalski I, Sere M, Acheson K, Allum F, Boutet S, Dixit G, Forbes R, Glownia JM, Goff N, Hegazy K, Howard AJ, Liang M, Minitti MP, Minns RS, Natan A, Peard N, Rasmus WO, Sension RJ, Ware MR, Weber PM, Werby N, Wolf TJA, Kirrander A, Bucksbaum PH. Transient vibration and product formation of photoexcited CS 2 measured by time-resolved x-ray scattering. J Chem Phys 2022; 157:164305. [PMID: 36319419 PMCID: PMC9625835 DOI: 10.1063/5.0113079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 10/03/2022] [Indexed: 11/14/2022] Open
Abstract
We have observed details of the internal motion and dissociation channels in photoexcited carbon disulfide (CS2) using time-resolved x-ray scattering (TRXS). Photoexcitation of gas-phase CS2 with a 200 nm laser pulse launches oscillatory bending and stretching motion, leading to dissociation of atomic sulfur in under a picosecond. During the first 300 fs following excitation, we observe significant changes in the vibrational frequency as well as some dissociation of the C-S bond, leading to atomic sulfur in the both 1D and 3P states. Beyond 1400 fs, the dissociation is consistent with primarily 3P atomic sulfur dissociation. This channel-resolved measurement of the dissociation time is based on our analysis of the time-windowed dissociation radial velocity distribution, which is measured using the temporal Fourier transform of the TRXS data aided by a Hough transform that extracts the slopes of linear features in an image. The relative strength of the two dissociation channels reflects both their branching ratio and differences in the spread of their dissociation times. Measuring the time-resolved dissociation radial velocity distribution aids the resolution of discrepancies between models for dissociation proposed by prior photoelectron spectroscopy work.
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Affiliation(s)
- Ian Gabalski
- Author to whom correspondence should be addressed:
| | | | - Kyle Acheson
- School of Chemistry, University of Edinburgh, Edinburgh EH8 9YL, United Kingdom
| | | | - Sébastien Boutet
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Gopal Dixit
- Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | | | - James M. Glownia
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Nathan Goff
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | | | | | - Mengning Liang
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Michael P. Minitti
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Russell S. Minns
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Adi Natan
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Nolan Peard
- Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - Weronika O. Rasmus
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Roseanne J. Sension
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Matthew R. Ware
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Peter M. Weber
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | | | | | - Adam Kirrander
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, OX1 3QX Oxford, United Kingdom
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4
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Waters MDJ, Ladda N, Sentfleben A, Svoboda V, Belozertsev M, Baumert T, Wörner HJ. Ground-state Photoelectron Circular Dichroism of Methyl p-Tolyl Sulfoxide by Single-photon Ionisation from a Table-top Source. Chemphyschem 2022; 23:e202200575. [PMID: 35969023 PMCID: PMC10087734 DOI: 10.1002/cphc.202200575] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/12/2022] [Indexed: 11/10/2022]
Abstract
Single-photon ionisation of enantiopure methyl p -tolyl sulfoxide by circularly polarised light at 133nm shows remarkably strong photoelectron circular dichroism (PECD), which has been measured in a velocity-map-imaging spectrometer. Both enantiomers were measured, each showing a PECD of a similar magnitude (ca. 25%). These experiments were carried out with a tabletop high-harmonic source with a photon energy of 9.3eV, capable of ionising the electronic ground state of most organic and inorganic molecules. Ab-initio scattering calculations provide a theoretical value of the expected chiral asymmetry parameter, and agree very well with the measured values once orbital mixing via configuration interaction in the cation is taken into account. This study demonstrates a simple photoionisation scheme that can be readily applied to study the time-resolved PECD of photochemical reactions and suggests a pronounced sensitivity of PECD to electronic configuration interaction in the cation.
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Affiliation(s)
- Max D J Waters
- ETH Zürich: Eidgenossische Technische Hochschule Zurich, Laboratory for Physical Chemistry, SWITZERLAND
| | - Nicolas Ladda
- Universität Kassel: Universitat Kassel, Physics Department, SWITZERLAND
| | - Arne Sentfleben
- Universität Kassel: Universitat Kassel, Department of Physics, SWITZERLAND
| | - Vit Svoboda
- ETH Zürich: Eidgenossische Technische Hochschule Zurich, Laboratory for Physical Chemistry, SWITZERLAND
| | - Mikhail Belozertsev
- Ludwig-Maximilians-Universität München Adolf-Butenandt-Institut: Ludwig-Maximilians-Universitat Munchen Biomedizinisches Centrum Munchen, Department of Chemistry, GERMANY
| | - Thomas Baumert
- Universität Kassel: Universitat Kassel, Department of Physics, GERMANY
| | - Hans Jakob Wörner
- ETH Zürich, chemistry and applied biosciences, Wolfgang-Pauli-Strasse 10, 8093, Zürich, SWITZERLAND
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5
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Karashima S, Suzuki YI, Suzuki T. Ultrafast Extreme Ultraviolet Photoelectron Spectroscopy of Nonadiabatic Photodissociation of CS 2 from 1B 2 ( 1Σ u+) State: Product Formation via an Intermediate Electronic State. J Phys Chem Lett 2021; 12:3755-3761. [PMID: 33844534 DOI: 10.1021/acs.jpclett.1c00864] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We studied nonadiabatic dissociation of CS2 from the 1B2 (1Σu+) state using ultrafast extreme ultraviolet photoelectron spectroscopy. A deep UV (200 nm) laser using the filamentation four-wave mixing method and an extreme UV (21.7 eV) laser using the high-order harmonic generation method were employed to achieve the pump-probe laser cross-correlation time of 48 fs. Spectra measured with a high signal-to-noise ratio revealed clear dynamical features of vibrational wave packet motion in the 1B2 state; its electronic decay to lower electronic state(s) within 630 fs; and dissociation into S(1D2), S(3PJ), and CS fragments within 300 fs. The results suggest that both singlet and triplet dissociation occur via intermediate electronic state(s) produced by electronic relaxation from the 1B2 (1Σu+) state.
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Affiliation(s)
- Shutaro Karashima
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo, Kyoto 606-8502, Japan
| | - Yoshi-Ichi Suzuki
- School of Medical Technology, Health Sciences University of Hokkaido, 1757 Kanazawa, Tobetsucho, Ishikari, Hokkaido 061-0293, Japan
| | - Toshinori Suzuki
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo, Kyoto 606-8502, Japan
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6
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Warne EM, Smith AD, Horke DA, Springate E, Jones AJH, Cacho C, Chapman RT, Minns RS. Time resolved detection of the S(1D) product of the UV induced dissociation of CS2. J Chem Phys 2021; 154:034302. [DOI: 10.1063/5.0035045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Emily M. Warne
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Adam D. Smith
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Daniel A. Horke
- Institute for Molecules and Materials, Radboud University, Heijendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Emma Springate
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - Alfred J. H. Jones
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - Cephise Cacho
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - Richard T. Chapman
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - Russell S. Minns
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
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7
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Kotsina N, Townsend D. Improved insights in time-resolved photoelectron imaging. Phys Chem Chem Phys 2021; 23:10736-10755. [DOI: 10.1039/d1cp00933h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We review new light source developments and data analysis considerations relevant to the time-resolved photoelectron imaging technique. Case studies illustrate how these themes may enhance understanding in studies of excited state molecular dynamics.
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Affiliation(s)
- Nikoleta Kotsina
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Dave Townsend
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
- Institute of Chemical Sciences
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8
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Paterson MJ, Townsend D. Rydberg-to-valence evolution in excited state molecular dynamics. INT REV PHYS CHEM 2020. [DOI: 10.1080/0144235x.2020.1815389] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
| | - Dave Townsend
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, UK
- Institute of Photonics & Quantum Sciences, Heriot-Watt University, Edinburgh, UK
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9
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Kotsina N, Candelaresi M, Saalbach L, Zawadzki MM, Crane SW, Sparling C, Townsend D. Short-wavelength probes in time-resolved photoelectron spectroscopy: an extended view of the excited state dynamics in acetylacetone. Phys Chem Chem Phys 2020; 22:4647-4658. [DOI: 10.1039/d0cp00068j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Time-resolved photoelectron spectroscopy using a vacuum ultraviolet probe brings new insight to the excited state dynamics operating in acetylacetone.
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Affiliation(s)
- Nikoleta Kotsina
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Marco Candelaresi
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Lisa Saalbach
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | | | - Stuart W. Crane
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Chris Sparling
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Dave Townsend
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
- Institute of Chemical Sciences
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10
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Oliveira AP, Jalbert G, Rocha AB. Generalized oscillator strengths of carbon disulfide calculated by multireference configuration interaction. J Chem Phys 2019; 150:174116. [DOI: 10.1063/1.5090613] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A. P. Oliveira
- Universidade Federal do Rio de Janeiro, UFRJ, Instituto de Química, Av. Athos da Silveira Ramos, 149, Rio de Janeiro, RJ 21941-909, Brazil
| | - Ginette Jalbert
- Universidade Federal do Rio de Janeiro, UFRJ, Instituto de Física, Av. Athos da Silveira Ramos, 149, Rio de Janeiro, RJ 21941-909, Brazil
| | - A. B. Rocha
- Universidade Federal do Rio de Janeiro, UFRJ, Instituto de Química, Av. Athos da Silveira Ramos, 149, Rio de Janeiro, RJ 21941-909, Brazil
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11
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Ciavardini A, Coreno M, Callegari C, Spezzani C, De Ninno G, Ressel B, Grazioli C, de Simone M, Kivimäki A, Miotti P, Frassetto F, Poletto L, Puglia C, Fornarini S, Pezzella M, Bodo E, Piccirillo S. Ultra-Fast-VUV Photoemission Study of UV Excited 2-Nitrophenol. J Phys Chem A 2019; 123:1295-1302. [DOI: 10.1021/acs.jpca.8b10136] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alessandra Ciavardini
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma “La Sapienza”, Ple A. Moro, 5, 00185 Rome, Italy
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Marcello Coreno
- ISM-CNR, in Basovizza Area Science Park, 34149 Trieste, Italy
- Elettra - Sincrotrone Trieste, ss. 14, Km. 163,5, 34149 Trieste, Italy
| | - Carlo Callegari
- Elettra - Sincrotrone Trieste, ss. 14, Km. 163,5, 34149 Trieste, Italy
| | - Carlo Spezzani
- Elettra - Sincrotrone Trieste, ss. 14, Km. 163,5, 34149 Trieste, Italy
| | - Giovanni De Ninno
- Elettra - Sincrotrone Trieste, ss. 14, Km. 163,5, 34149 Trieste, Italy
- Laboratory of Quantum Optics, University of Nova Gorica, Vipavska 11c, SI-5270 Ajdovščina, Slovenia
| | - Barbara Ressel
- Elettra - Sincrotrone Trieste, ss. 14, Km. 163,5, 34149 Trieste, Italy
- Laboratory of Quantum Optics, University of Nova Gorica, Vipavska 11c, SI-5270 Ajdovščina, Slovenia
| | - Cesare Grazioli
- Laboratorio TASV, IOM-CNR, Basovizza SS-14, km 163.5, 34012 Trieste, Italy
| | - Monica de Simone
- Laboratorio TASV, IOM-CNR, Basovizza SS-14, km 163.5, 34012 Trieste, Italy
| | - Antti Kivimäki
- Laboratorio TASV, IOM-CNR, Basovizza SS-14, km 163.5, 34012 Trieste, Italy
| | - Paolo Miotti
- Padova Research Unit, IFN-CNR, Via Trasea 7, I-35131 Padova, Italy
| | - Fabio Frassetto
- Padova Research Unit, IFN-CNR, Via Trasea 7, I-35131 Padova, Italy
| | - Luca Poletto
- Padova Research Unit, IFN-CNR, Via Trasea 7, I-35131 Padova, Italy
| | - Carla Puglia
- Department of Physics and Astronomy, Uppsala University, SE-75120 Uppsala, Sweden
| | - Simonetta Fornarini
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma “La Sapienza”, Ple A. Moro, 5, 00185 Rome, Italy
| | - Marco Pezzella
- Dipartimento di Chimica, Università di Roma “La Sapienza”, Ple A. Moro, 5, 00185 Rome, Italy
| | - Enrico Bodo
- Dipartimento di Chimica, Università di Roma “La Sapienza”, Ple A. Moro, 5, 00185 Rome, Italy
| | - Susanna Piccirillo
- Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
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12
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Smith AD, Warne EM, Bellshaw D, Horke DA, Tudorovskya M, Springate E, Jones AJH, Cacho C, Chapman RT, Kirrander A, Minns RS. Mapping the Complete Reaction Path of a Complex Photochemical Reaction. PHYSICAL REVIEW LETTERS 2018; 120:183003. [PMID: 29775354 DOI: 10.1103/physrevlett.120.183003] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Indexed: 06/08/2023]
Abstract
We probe the dynamics of dissociating CS_{2} molecules across the entire reaction pathway upon excitation. Photoelectron spectroscopy measurements using laboratory-generated femtosecond extreme ultraviolet pulses monitor the competing dissociation, internal conversion, and intersystem crossing dynamics. Dissociation occurs either in the initially excited singlet manifold or, via intersystem crossing, in the triplet manifold. Both product channels are monitored and show that, despite being more rapid, the singlet dissociation is the minor product and that triplet state products dominate the final yield. We explain this by a consideration of accurate potential energy curves for both the singlet and triplet states. We propose that rapid internal conversion stabilizes the singlet population dynamically, allowing for singlet-triplet relaxation via intersystem crossing and the efficient formation of spin-forbidden dissociation products on longer timescales. The study demonstrates the importance of measuring the full reaction pathway for defining accurate reaction mechanisms.
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Affiliation(s)
- Adam D Smith
- Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Emily M Warne
- Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Darren Bellshaw
- EaStCHEM, School of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Daniel A Horke
- Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Maria Tudorovskya
- EaStCHEM, School of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Emma Springate
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - Alfred J H Jones
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - Cephise Cacho
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - Richard T Chapman
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - Adam Kirrander
- EaStCHEM, School of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Russell S Minns
- Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
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Tudorovskaya M, Minns RS, Kirrander A. Effects of probe energy and competing pathways on time-resolved photoelectron spectroscopy: the ring-opening of 1,3-cyclohexadiene. Phys Chem Chem Phys 2018; 20:17714-17726. [DOI: 10.1039/c8cp02397b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Photoelectron spectra for the ring-opening dynamics of 1,3-cyclohexadiene are studied using a model based on quantum molecular dynamics and the Dyson orbital approach.
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Affiliation(s)
| | | | - Adam Kirrander
- EaStCHEM
- School of Chemistry
- University of Edinburgh
- Edinburgh
- UK
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