Identification of absolute geometries of cis and trans molecular isomers by Coulomb Explosion Imaging
Open Access
- 2 December 2016
- journal article
- research article
- Published by Springer Nature in Scientific Reports
- Vol. 6 (1) , 38202
Abstract
An experimental route to identify and separate geometric isomers by means of coincident Coulomb explosion imaging is presented, allowing isomer-resolved photoionization studies on isomerically mixed samples. We demonstrate the technique on cis/trans 1,2-dibromoethene (C2H2Br2). The momentum correlation between the bromine ions in a three-body fragmentation process induced by bromine 3d inner-shell photoionization is used to identify the cis and trans structures of the isomers. The experimentally determined momentum correlations and the isomer-resolved fragment-ion kinetic energies are matched closely by a classical Coulomb explosion model.Keywords
This publication has 34 references indexed in Scilit:
- Femtosecond structural dynamics drives the trans/cis isomerization in photoactive yellow proteinScience, 2016
- Discovery of protein acetylation patterns by deconvolution of peptide isomer mass spectraNature Communications, 2015
- Visualizing Recurrently Migrating Hydrogen in Acetylene Dication by Intense Ultrashort Laser PulsesPhysical Review Letters, 2007
- Structural basis for reversible photobleaching of a green fluorescent protein homologueProceedings of the National Academy of Sciences, 2007
- Ab Initio Excited-State Dynamics of the Photoactive Yellow Protein ChromophoreJournal of the American Chemical Society, 2003
- Photoelectron-Photoion Momentum Spectroscopy as a Clock for Chemical Rearrangements: Isomerization of the Di-Cation of Acetylene to the Vinylidene ConfigurationPhysical Review Letters, 2003
- Structure at 0.85 Å resolution of an early protein photocycle intermediateNature, 1998
- Laser Separation of Geometrical Isomers of Weakly Bound Molecular ComplexesScience, 1995
- The First Step in Vision: Femtosecond Isomerization of RhodopsinScience, 1991
- Cis-trans Isomers of Vitamin A and Retinene in VisionScience, 1952