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Your search keyword '"Alexander Britz"' showing total 2 results
Start Over Author "Alexander Britz" Journal the journal of physical chemistry. b
2 results on '"Alexander Britz"'

1. The Photoactive Excited State of the B

Author

Nicholas A, Miller, April K, Kaneshiro, Arkaprabha, Konar, Roberto, Alonso-Mori, Alexander, Britz, Aniruddha, Deb, James M, Glownia, Jake D, Koralek, Leena, Mallik, Joseph H, Meadows, Lindsay B, Michocki, Tim B, van Driel, Markos, Koutmos, S, Padmanabhan, Montserrat, Elías-Arnanz, Kevin J, Kubarych, E Neil G, Marsh, James E, Penner-Hahn, and Roseanne J, Sension

Subjects
Cobalt
Abstract

We have used transient absorption spectroscopy in the UV-visible and X-ray regions to characterize the excited state of CarH, a protein photoreceptor that uses a form of B

Published
2020

2. Probing the Excited State of Methylcobalamin Using Polarized Time-Resolved X-ray Absorption Spectroscopy

Author

Jake Koralek, Nicholas A. Miller, James M. Glownia, Kevin J. Kubarych, Roseanne J. Sension, Danielle L. Sofferman, James E. Penner-Hahn, April K Kaneshiro, Lindsay B Michocki, Pawel M. Kozlowski, Roberto Alonso-Mori, Joseph H Meadows, Megan J. Toda, Alexander Britz, Arkaprabha Konar, Sanghoon Song, Aniruddha Deb, and Tim Brandt van Driel

Subjects
Materials science, 010304 chemical physics, Optical polarization, 010402 general chemistry, 01 natural sciences, Molecular physics, XANES, 0104 chemical sciences, Surfaces, Coatings and Films, Photoexcitation, Microsecond, Excited state, Picosecond, 0103 physical sciences, Ultrafast laser spectroscopy, Materials Chemistry, Physical and Theoretical Chemistry, Absorption (electromagnetic radiation)
Abstract

We use picosecond time-resolved polarized X-ray absorption near-edge structure (XANES) measurements to probe the structure of the long-lived photoexcited state of methylcobalamin (MeCbl) and the cob(II)alamin photoproduct formed following photoexcitation of adenosylcobalamin (AdoCbl, coenzyme B12). For MeCbl, we used 520 nm excitation and a time delay of 100 ps to avoid the formation of cob(II)alamin. We find only small spectral changes in the equatorial and axial directions, which we interpret as arising from small (

Published
2019

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