Urbanek-Chodorow Postdoctral Fellow at Stanford PULSE Institute
Honors & Awards
Urbanek-Chodorow Postdoctral Fellowship, Stanford University (2020-2023)
Funai Overseas Scholarship, Funai Foundation for Information and Technology (2015-2018)
Ph.D, University of California, Berkeley, Chemistry (2020)
B.S., University of Tokyo, Chemistry (2015)
Tony Heinz, Postdoctoral Faculty Sponsor
- Probing electron-hole coherence in strongly driven 2D materials using high-harmonic generation OPTICA 2022; 9 (5): 512-516
- Visualizing coherent vibrational motion in the molecular iodine B- 3 Pi(0+u) state using ultrafast XUV transient-absorption spectroscopy PHYSICAL REVIEW A 2021; 104 (2)
X-ray transient absorption reveals the 1Au (npi*) state of pyrazine in electronic relaxation.
2021; 12 (1): 5003
Electronic relaxation in organic chromophores often proceeds via states not directly accessible by photoexcitation. We report on the photoinduced dynamics of pyrazine that involves such states, excited by a 267nm laser and probed with X-ray transient absorption spectroscopy in a table-top setup. In addition to the previously characterized 1B2u (pipi*) (S2) and 1B3u (npi*) (S1) states, the participation of the optically dark 1Au (npi*) state is assigned by a combination of experimental X-ray core-to-valence spectroscopy, electronic structure calculations, nonadiabatic dynamics simulations, and X-ray spectral computations. Despite 1Au (npi*) and 1B3u (npi*) states having similar energies at relaxed geometry, their X-ray absorption spectra differ largely in transition energy and oscillator strength. The 1Au (npi*) state is populated in 200±50 femtoseconds after electronic excitation and plays a key role in the relaxation of pyrazine to the ground state.
View details for DOI 10.1038/s41467-021-25045-0
View details for PubMedID 34408141