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Laser Separation of Geometrical Isomers of Weakly Bound Molecular Complexes
Charles Desfrançois, Hassan Abdoul-Carime, C. P. Schulz and Jean Pierre Schermann
New Series, Vol. 269, No. 5231 (Sep. 22, 1995), pp. 1707-1709
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/2888579
Page Count: 3
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Molecular assemblies held together by weak intermolecular bonds exhibit a rich variety of geometries. Even a simple complex formed by only two molecules can adopt several conformations corresponding to different geometrical isomers. Isomers of small polar dimers can be isolated nondestructively by taking advantage of a selective and reversible ionization process, with the use of a mass spectrometry method that allows the determination and control of the geometrical configuration of neutral or negatively charged molecular complexes in supersonic beams. Here, the method is applied to isolated nucleic acid base pairs that can be selected in stacked or H-bonded configurations.
Science © 1995 American Association for the Advancement of Science