Journal
CHEMICAL SCIENCE
Volume 13, Issue 35, Pages 10327-10335Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2sc02768b
Keywords
-
Categories
Funding
- National Science Foundation [CHE-1953045]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-FG02-04ER15571]
- U.S. Department of Energy (DOE) [DE-FG02-04ER15571] Funding Source: U.S. Department of Energy (DOE)
Ask authors/readers for more resources
The ring current of Mg-phthalocyanine varies with time under UV excitation, showing migration of current density among different regions. By calculating the X-ray circular dichroism spectrum, we can obtain the current signals induced by different excited state pairs.
The coherent ring current of Mg-phthalocyanine created by a broad band UV-visible pump pulse shows variation with time, where the ring currents at the corner benzene rings, around the Mg cation and on the outer ring oscillate with different time periods and the current density migrates among these regions. The 7 pairs of E-u degenerate excited states populated upon photoexcitation, generate 21 distinct coherent ring currents. We further calculate the time-resolved X-ray circular dichroism (TRXCD) spectrum of the coherences contributing to the ring current obtained by an attosecond X-ray probe pulse resonant with the nitrogen K-edge. A frequency domain TRXCD signal obtained by a Fourier transform of the signal with respect to the pump-probe delay time clearly separates the currents induced by different state pairs.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available