Observation of Enhanced Chiral Asymmetries in the
Inner-Shell Photoionization of Uniaxially Oriented Methyloxirane Enantiomers
Version 2 2017-06-23, 18:34
Version 1 2017-06-08, 16:51
Posted on 2017-06-23 - 18:34
Most
large molecules are chiral in their structure: they exist
as two enantiomers, which are mirror images of each
other. Whereas the rovibronic sublevels of two enantiomers are almost
identical (neglecting a minuscular effect of the weak interaction),
it turns out that the photoelectric effect is sensitive to the absolute
configuration of the ionized enantiomer. Indeed, photoionization of
randomly oriented enantiomers by left or right circularly polarized
light results in a slightly different electron flux parallel or antiparallel
with respect to the photon propagation directionan effect
termed photoelectron circular dichroism (PECD). Our comprehensive
study demonstrates that the origin of PECD can be found in the molecular
frame electron emission pattern connecting PECD to other fundamental
photophysical effects such as the circular dichroism in angular distributions
(CDAD). Accordingly, distinct spatial orientations of a chiral molecule
enhance the PECD by a factor of about 10.
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Tia, Maurice; Pitzer, Martin; Kastirke, Gregor; Gatzke, Janine; Kim, Hong-Keun; Trinter, Florian; et al. (2017). Observation of Enhanced Chiral Asymmetries in the
Inner-Shell Photoionization of Uniaxially Oriented Methyloxirane Enantiomers. ACS Publications. Collection. https://doi.org/10.1021/acs.jpclett.7b01000
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AUTHORS (41)
MT
Maurice Tia
MP
Martin Pitzer
GK
Gregor Kastirke
JG
Janine Gatzke
HK
Hong-Keun Kim
FT
Florian Trinter
JR
Jonas Rist
AH
Alexander Hartung
DT
Daniel Trabert
JS
Juliane Siebert
KH
Kevin Henrichs
JB
Jasper Becht
SZ
Stefan Zeller
HG
Helena Gassert
FW
Florian Wiegandt
RW
Robert Wallauer
AK
Andreas Kuhlins
CS
Carl Schober
TB
Tobias Bauer
NW
Natascha Wechselberger
KEYWORDS
mirror imagesUniaxially Oriented Methyloxirane Enantiomerselectron fluxPECDphotoelectric effectdichroismenantiomerEnhanced Chiral Asymmetrieslight resultsright circularlyInner-Shell Photoionizationminuscular effectchiral moleculephotophysical effectsrovibronic sublevelsCDADframe electron emission pattern