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Observation of Enhanced Chiral Asymmetries in the Inner-Shell Photoionization of Uniaxially Oriented Methyloxirane Enantiomers.

Authors :
Tia M
Pitzer M
Kastirke G
Gatzke J
Kim HK
Trinter F
Rist J
Hartung A
Trabert D
Siebert J
Henrichs K
Becht J
Zeller S
Gassert H
Wiegandt F
Wallauer R
Kuhlins A
Schober C
Bauer T
Wechselberger N
Burzynski P
Neff J
Weller M
Metz D
Kircher M
Waitz M
Williams JB
Schmidt LPH
Müller AD
Knie A
Hans A
Ben Ltaief L
Ehresmann A
Berger R
Fukuzawa H
Ueda K
Schmidt-Böcking H
Dörner R
Jahnke T
Demekhin PV
Schöffler M
Source :
The journal of physical chemistry letters [J Phys Chem Lett] 2017 Jul 06; Vol. 8 (13), pp. 2780-2786. Date of Electronic Publication: 2017 Jun 08.
Publication Year :
2017

Abstract

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 direction-an 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.

Details

Language :
English
ISSN :
1948-7185
Volume :
8
Issue :
13
Database :
MEDLINE
Journal :
The journal of physical chemistry letters
Publication Type :
Academic Journal
Accession number :
28582620
Full Text :
https://doi.org/10.1021/acs.jpclett.7b01000