Nonadiabatic dynamics simulations of photoexcited urocanic acid
Journal Article
·
· Chemical Physics
- Max-Planck-Institut fur Kohlenforschung, Mulheim an der Ruhr (Germany); Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Max-Planck-Institut fur Kohlenforschung, Mulheim an der Ruhr (Germany)
- Aix Marseille Univ., Marseille (France)
Urocanic acid (UA) is a UV filter found in human skin, which has been linked to photoimmunosuppression and the formation of skin cancer. Its UV-light-induced photoisomerization and radiationless deactivation mechanisms have been addressed previously by static calculations. In this paper, we present nonadiabatic trajectory-surface-hopping dynamics simulations of photoexcited UA using the semiempirical OM2/MRCI methodology and an adaptive-timestep algorithm. We have simulated almost 6000 trajectories, each for a simulation time of 1.6 ps, covering the entire conformational space of the E and Z isomers of both possible tautomers of the isolated neutral form of UA (overall 32 conformers). Here, the initial conditions for the excited-state dynamics were obtained from 1 ns ground-state dynamics simulations.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1493586
- Alternate ID(s):
- OSTI ID: 23115361
- Journal Information:
- Chemical Physics, Journal Name: Chemical Physics Journal Issue: C Vol. 515; ISSN 0301-0104
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
IN VIVO CHANGES IN UROCANIC ACID OF GUINEA PIG AND HUMAN EPIDERMIS BY ULTRAVIOLET LIGHT
Non-adiabatic dynamics investigation of the radiationless decay mechanism of trans-urocanic acid in the S{sub 2} state
Nonadiabatic Molecular Dynamics Study of the Relaxation Pathways of Photoexcited Cyclooctatetraene
Thesis/Dissertation
·
Sun Dec 31 23:00:00 EST 1961
·
OSTI ID:4694856
Non-adiabatic dynamics investigation of the radiationless decay mechanism of trans-urocanic acid in the S{sub 2} state
Journal Article
·
Thu Jul 28 00:00:00 EDT 2016
· Journal of Chemical Physics
·
OSTI ID:22679003
Nonadiabatic Molecular Dynamics Study of the Relaxation Pathways of Photoexcited Cyclooctatetraene
Journal Article
·
Mon Jun 14 20:00:00 EDT 2021
· Journal of Physical Chemistry Letters
·
OSTI ID:1922849
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ESIPT
UV filter
UV photostability
conical intersection
excited state deactivation
excited state dynamics
excited state intramolecular proton transfer
nonadiabatic dynamics
photoisomerization
photoisomerization quantum yield
quantum chemistry
semiempirical methods
trajectory surface hopping
ESIPT
UV filter
UV photostability
conical intersection
excited state deactivation
excited state dynamics
excited state intramolecular proton transfer
nonadiabatic dynamics
photoisomerization
photoisomerization quantum yield
quantum chemistry
semiempirical methods
trajectory surface hopping