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Generalized trajectory-based ab initio surface-hopping (GTSH) methods simulate nonadiabatic dynamics in photochemistry. These advanced simulations cover molecular and extended systems, offering insights into complex photophysical processes.

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Area of Science:

  • Computational Chemistry
  • Chemical Dynamics
  • Photochemistry

Background:

  • Nonadiabatic effects are crucial in photophysical and photochemical processes.
  • Accurate simulation of these effects is essential for understanding molecular behavior after light absorption.

Purpose of the Study:

  • To introduce generalized trajectory-based ab initio surface-hopping (GTSH) dynamics simulation methods.
  • To showcase the application of these methods in diverse chemical and material systems.

Main Methods:

  • Development of generalized trajectory-based ab initio surface-hopping (GTSH) methods.
  • Numerical implementations at various computational levels.
  • Application to simulate internal conversion, intersystem crossing, energy transfer, and charge transfer.

Main Results:

  • GTSH methods successfully describe nonadiabatic processes in molecular systems.
  • Simulations cover photoinduced carrier dynamics in extended systems, with and without spin-orbit couplings.
  • Applications demonstrated on organic molecules, proteins, organometallic compounds, and periodic materials.

Conclusions:

  • Ab initio nonadiabatic dynamics simulations are powerful tools for studying complex phenomena.
  • GTSH methods provide a robust framework for investigating diverse photophysical and photochemical reactions.
  • Future work will address challenges and explore new frontiers in the field.