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A search for circular dichroism in the VUV photofragmentation mass spectra of 2‐amino‐1‐butanol
Author(s) -
Mackie R.A.,
Browning R.,
Latimer C.J.,
Scully S.W.J.,
Dunn K.F.
Publication year - 2002
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.10074
Subject(s) - chemistry , homochirality , photoionization , circular dichroism , chirality (physics) , vibrational circular dichroism , mass spectrum , circular polarization , spectral line , synchrotron radiation , enantiomer , photodissociation , crystallography , photochemistry , stereochemistry , mass spectrometry , ionization , physics , optics , organic chemistry , ion , chiral symmetry breaking , quark , chromatography , quantum mechanics , nambu–jona lasinio model , astronomy , microstrip
The dissociative photoionization of a single‐enantiomer chiral molecule by circularly polarized synchrotron radiation was investigated, for the first time, in the gas phase. Photoion mass spectra were produced by the interaction of (+)‐(S)‐, (−)‐(R)‐ and rac‐ 2‐amino‐l‐butanol with circularly polarized light. Comparison of these spectra places an upper bound of approximately 2% on circular dichroism in the dissociative photoionization of 2‐amino‐l‐butanol at 21 eV, which may have consequences for the theory that the origin of biological homochirality was predominantly enantioselective photofragmentation by circularly polarized light. We have also identified and elucidated many of the difficulties of performing gas phase CD measurements in crossed beam experiments. Chirality 14:478–483, 2002. © 2002 Wiley‐Liss, Inc.