Investigating the UV-induced isomerization of Norbornadiene to Quadricyclane using ultrafast X-ray scattering

ORAL

Abstract

The UV-induced isomerization of norbornadiene (NB) to quadricyclane (QC) is investigated using femtosecond gas-phase X-ray (16 keV) scattering. The 200-nm UV excites NB to the 3p Rydberg state, from where it isomerizes to QD via a conical intersection within sub-100-fs. Our preliminary results indicate that subsequent to the isomerization, which can be resolved due to the short pulse durations of both UV and X-ray pulses, the molecule is likely to dissociate into smaller products. Time-resolved identification of the isomerization and dissociation products and involved transient intermediates will elucidate this photochemical reaction. These findings are supported by ab initio calculations.

*This project is supported by the Chemical Science, Geosciences, and Bio-Science division, Office of Basic Energy Science, Office of Science, U.S. Department of Energy, grants no. DE-SC0020276 and DE-FG02-86ER13491, and by the National Science Foundation grant no. PHYS-1753324.

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Presenters

  • Surjendu Bhattacharyya

    • J.R. Macdonald Laboratory, Kansas State University
    • J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA
    • Kansas State University

Authors

  • Surjendu Bhattacharyya

    • J.R. Macdonald Laboratory, Kansas State University
    • J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA
    • Kansas State University

  • Artem Rudenko

    • J.R. Macdonald Laboratory, Kansas State University
    • J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA
    • Kansas State University

  • Peter M Weber

    • Brown University

  • Martin Centurion

    • University of Nebraska - Lincoln
    • Department of Physics and Astronomy, University of Nebraska–Lincoln, Lincoln, NE, USA

  • Michael Minitti

    • SLAC National Accelerator Laboratory
    • SLAC Natl Accelerator Lab

  • Adam Kirrander

    • University of Oxford
    • Oxford University

  • Daniel Rolles

    • J.R. Macdonald Laboratory, Kansas State University
    • J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA
    • Kansas State
    • Kansas State University