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Nunes JPF, Williams M, Yang J, Wolf TJA, Rankine CD, Parrish R, Moore B, Wilkin K, Shen X, Lin MF, Hegazy K, Li R, Weathersby S, Martinez TJ, Wang XJ, Centurion M. Photo-induced structural dynamics of o-nitrophenol by ultrafast electron diffraction. Phys Chem Chem Phys 2024. [PMID: 38764355 DOI: 10.1039/d3cp06253h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2024]
Abstract
The photo-induced dynamics of o-nitrophenol, particularly its photolysis, has garnered significant scientific interest as a potential source of nitrous acid in the atmosphere. Although the photolysis products and preceding photo-induced electronic structure dynamics have been investigated extensively, the nuclear dynamics accompanying the non-radiative relaxation of o-nitrophenol on the ultrafast timescale, which include an intramolecular proton transfer step, have not been experimentally resolved. Herein, we present a direct observation of the ultrafast nuclear motions mediating photo-relaxation using ultrafast electron diffraction. This work spatiotemporally resolves the loss of planarity which enables access to a conical intersection between the first excited state and the ground state after the proton transfer step, on the femtosecond timescale and with sub-Angstrom resolution. Our observations, supported by ab initio multiple spawning simulations, provide new insights into the proton transfer mediated relaxation mechanism in o-nitrophenol.
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Affiliation(s)
- J P F Nunes
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, USA.
| | - M Williams
- SLAC National Accelerator Laboratory, Menlo Park, USA
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, USA
- Department of Chemistry, Stanford University, Stanford, USA
| | - J Yang
- SLAC National Accelerator Laboratory, Menlo Park, USA
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, USA
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China
| | - T J A Wolf
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, USA
| | - C D Rankine
- School of Natural and Environmental Sciences, Newcastle University, UK
| | - R Parrish
- SLAC National Accelerator Laboratory, Menlo Park, USA
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, USA
- Department of Chemistry, Stanford University, Stanford, USA
| | - B Moore
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, USA.
| | - K Wilkin
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, USA.
| | - X Shen
- SLAC National Accelerator Laboratory, Menlo Park, USA
| | - Ming-Fu Lin
- SLAC National Accelerator Laboratory, Menlo Park, USA
| | - K Hegazy
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, USA
- Department of Physics, Stanford University, Stanford, USA
| | - R Li
- SLAC National Accelerator Laboratory, Menlo Park, USA
| | - S Weathersby
- SLAC National Accelerator Laboratory, Menlo Park, USA
| | - T J Martinez
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, USA
- Department of Chemistry, Stanford University, Stanford, USA
| | - X J Wang
- SLAC National Accelerator Laboratory, Menlo Park, USA
- Physics Department, Universität Duisburg Essen, 47052 Duisburg, Research Center Chemical Sciences and Sustainability, Research Alliance Ruhr, 44780 Bochum, Germany
- Physics Department, Technische Universität Dortmund, 44221 Dortmund, Research Center Chemical Sciences and Sustainability, Research Alliance Ruhr, 44780 Bochum, Germany
| | - M Centurion
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, USA.
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2
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Liu Y, Sanchez DM, Ware MR, Champenois EG, Yang J, Nunes JPF, Attar A, Centurion M, Cryan JP, Forbes R, Hegazy K, Hoffmann MC, Ji F, Lin MF, Luo D, Saha SK, Shen X, Wang XJ, Martínez TJ, Wolf TJA. Rehybridization dynamics into the pericyclic minimum of an electrocyclic reaction imaged in real-time. Nat Commun 2023; 14:2795. [PMID: 37202402 DOI: 10.1038/s41467-023-38513-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 04/28/2023] [Indexed: 05/20/2023] Open
Abstract
Electrocyclic reactions are characterized by the concerted formation and cleavage of both σ and π bonds through a cyclic structure. This structure is known as a pericyclic transition state for thermal reactions and a pericyclic minimum in the excited state for photochemical reactions. However, the structure of the pericyclic geometry has yet to be observed experimentally. We use a combination of ultrafast electron diffraction and excited state wavepacket simulations to image structural dynamics through the pericyclic minimum of a photochemical electrocyclic ring-opening reaction in the molecule α-terpinene. The structural motion into the pericyclic minimum is dominated by rehybridization of two carbon atoms, which is required for the transformation from two to three conjugated π bonds. The σ bond dissociation largely happens after internal conversion from the pericyclic minimum to the electronic ground state. These findings may be transferrable to electrocyclic reactions in general.
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Affiliation(s)
- Y Liu
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY, 11790, USA
| | - D M Sanchez
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, CA, 94305, USA
- Design Physics Division, Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - M R Ware
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - E G Champenois
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - J Yang
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Center of Basic Molecular Science, Department of Chemistry, Mong Man Wai Building of Science and Technology, S-1027 Tsinghua University, Beijing, China
| | - J P F Nunes
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Theodore Jorgensen Hall 208, 855 N 16th Street, Lincoln, NE, 68588, USA
- Diamond Light Source, Harwell Science Campus, Fermi Ave, Didcot, OX11 0DE, UK
| | - A Attar
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - M Centurion
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Theodore Jorgensen Hall 208, 855 N 16th Street, Lincoln, NE, 68588, USA
| | - J P Cryan
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - R Forbes
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - K Hegazy
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - M C Hoffmann
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - F Ji
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - M-F Lin
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - D Luo
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - S K Saha
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Theodore Jorgensen Hall 208, 855 N 16th Street, Lincoln, NE, 68588, USA
| | - X Shen
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - X J Wang
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - T J Martínez
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, CA, 94305, USA.
| | - T J A Wolf
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
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3
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Lin MF, Singh N, Liang S, Mo M, Nunes JPF, Ledbetter K, Yang J, Kozina M, Weathersby S, Shen X, Cordones AA, Wolf TJA, Pemmaraju CD, Ihme M, Wang XJ. Imaging the short-lived hydroxyl-hydronium pair in ionized liquid water. Science 2021; 374:92-95. [PMID: 34591617 DOI: 10.1126/science.abg3091] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- M-F Lin
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - N Singh
- Department of Mechanical Engineering, Stanford University , Stanford, CA 94305, USA
| | - S Liang
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - M Mo
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - J P F Nunes
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - K Ledbetter
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.,Department of Physics, Stanford University, Stanford, CA 94305, USA
| | - J Yang
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.,Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - M Kozina
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - S Weathersby
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - X Shen
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - A A Cordones
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - T J A Wolf
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.,Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - C D Pemmaraju
- SIMES, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - M Ihme
- Department of Mechanical Engineering, Stanford University , Stanford, CA 94305, USA
| | - X J Wang
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
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4
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Ledbetter K, Biasin E, Nunes JPF, Centurion M, Gaffney KJ, Kozina M, Lin MF, Shen X, Yang J, Wang XJ, Wolf TJA, Cordones AA. Photodissociation of aqueous I 3 - observed with liquid-phase ultrafast mega-electron-volt electron diffraction. Struct Dyn 2020; 7:064901. [PMID: 33415183 PMCID: PMC7771998 DOI: 10.1063/4.0000051] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 11/22/2020] [Indexed: 05/26/2023]
Abstract
Developing femtosecond resolution methods for directly observing structural dynamics is critical to understanding complex photochemical reaction mechanisms in solution. We have used two recent developments, ultrafast mega-electron-volt electron sources and vacuum compatible sub-micron thick liquid sheet jets, to enable liquid-phase ultrafast electron diffraction (LUED). We have demonstrated the viability of LUED by investigating the photodissociation of tri-iodide initiated with a 400 nm laser pulse. This has enabled the average speed of the bond expansion to be measured during the first 750 fs of dissociation and the geminate recombination to be directly captured on the picosecond time scale.
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Affiliation(s)
| | - E. Biasin
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - J. P. F. Nunes
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
| | - M. Centurion
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
| | - K. J. Gaffney
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - M. Kozina
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - M.-F. Lin
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - X. Shen
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | | | - X. J. Wang
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - T. J. A. Wolf
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - A. A. Cordones
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
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5
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Nunes JPF, Ledbetter K, Lin M, Kozina M, DePonte DP, Biasin E, Centurion M, Crissman CJ, Dunning M, Guillet S, Jobe K, Liu Y, Mo M, Shen X, Sublett R, Weathersby S, Yoneda C, Wolf TJA, Yang J, Cordones AA, Wang XJ. Liquid-phase mega-electron-volt ultrafast electron diffraction. Struct Dyn 2020; 7:024301. [PMID: 32161776 PMCID: PMC7062553 DOI: 10.1063/1.5144518] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 02/13/2020] [Indexed: 05/23/2023]
Abstract
The conversion of light into usable chemical and mechanical energy is pivotal to several biological and chemical processes, many of which occur in solution. To understand the structure-function relationships mediating these processes, a technique with high spatial and temporal resolutions is required. Here, we report on the design and commissioning of a liquid-phase mega-electron-volt (MeV) ultrafast electron diffraction instrument for the study of structural dynamics in solution. Limitations posed by the shallow penetration depth of electrons and the resulting information loss due to multiple scattering and the technical challenge of delivering liquids to vacuum were overcome through the use of MeV electrons and a gas-accelerated thin liquid sheet jet. To demonstrate the capabilities of this instrument, the structure of water and its network were resolved up to the 3 rd hydration shell with a spatial resolution of 0.6 Å; preliminary time-resolved experiments demonstrated a temporal resolution of 200 fs.
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Affiliation(s)
- J P F Nunes
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
| | | | - M Lin
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - M Kozina
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - D P DePonte
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - E Biasin
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - M Centurion
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
| | - C J Crissman
- Department of Applied Physics, Stanford University, Stanford, California 94305, USA
| | - M Dunning
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - S Guillet
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - K Jobe
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Y Liu
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794, USA
| | - M Mo
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - X Shen
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - R Sublett
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - S Weathersby
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - C Yoneda
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - T J A Wolf
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | | | - A A Cordones
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - X J Wang
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
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6
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Shen X, Nunes JPF, Yang J, Jobe RK, Li RK, Lin MF, Moore B, Niebuhr M, Weathersby SP, Wolf TJA, Yoneda C, Guehr M, Centurion M, Wang XJ. Femtosecond gas-phase mega-electron-volt ultrafast electron diffraction. Struct Dyn 2019; 6:054305. [PMID: 31649964 PMCID: PMC6796191 DOI: 10.1063/1.5120864] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 09/24/2019] [Indexed: 05/16/2023]
Abstract
The development of ultrafast gas electron diffraction with nonrelativistic electrons has enabled the determination of molecular structures with atomic spatial resolution. It has, however, been challenging to break the picosecond temporal resolution barrier and achieve the goal that has long been envisioned-making space- and-time resolved molecular movies of chemical reaction in the gas-phase. Recently, an ultrafast electron diffraction (UED) apparatus using mega-electron-volt (MeV) electrons was developed at the SLAC National Accelerator Laboratory for imaging ultrafast structural dynamics of molecules in the gas phase. The SLAC gas-phase MeV UED has achieved 65 fs root mean square temporal resolution, 0.63 Å spatial resolution, and 0.22 Å-1 reciprocal-space resolution. Such high spatial-temporal resolution has enabled the capturing of real-time molecular movies of fundamental photochemical mechanisms, such as chemical bond breaking, ring opening, and a nuclear wave packet crossing a conical intersection. In this paper, the design that enables the high spatial-temporal resolution of the SLAC gas phase MeV UED is presented. The compact design of the differential pump section of the SLAC gas phase MeV UED realized five orders-of-magnitude vacuum isolation between the electron source and gas sample chamber. The spatial resolution, temporal resolution, and long-term stability of the apparatus are systematically characterized.
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Affiliation(s)
- X. Shen
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - J. P. F. Nunes
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
| | | | - R. K. Jobe
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - R. K. Li
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Ming-Fu Lin
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - B. Moore
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
| | - M. Niebuhr
- Institut für Physik und Astronomie, Universität Potsdam, 14476 Potsdam, Germany
| | - S. P. Weathersby
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - T. J. A. Wolf
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - C. Yoneda
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - Markus Guehr
- Institut für Physik und Astronomie, Universität Potsdam, 14476 Potsdam, Germany
| | - Martin Centurion
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
| | - X. J. Wang
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
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Rankine CD, Nunes JPF, Robinson MS, Lane PD, Wann DA. A theoretical investigation of internal conversion in 1,2-dithiane using non-adiabatic multiconfigurational molecular dynamics. Phys Chem Chem Phys 2016; 18:27170-27174. [PMID: 27722509 DOI: 10.1039/c6cp05518d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Non-adiabatic multireference molecular dynamics simulations have revealed a motion in 1,2-dithiane that activates on absorption of light in the mid-UV and expedites the S1/S0 internal conversion process.
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Affiliation(s)
- C. D. Rankine
- Department of Chemistry
- University of York
- Heslington
- UK
| | | | | | - P. D. Lane
- Department of Chemistry
- University of York
- Heslington
- UK
| | - D. A. Wann
- Department of Chemistry
- University of York
- Heslington
- UK
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