A selector for structural isomers of neutral molecules

Details A selector for structural isomers of neutral molecules A selector for structural isomers of neutral molecules

2008-02-20

arxiv.org/abs/0802.2795v1

Phys. Rev. Lett 100, 133003 (2008)

Physics

Chemical Physics

4 pages, 4 figures (Revtex)

Scientific paper

10.1103/PhysRevLett.100.133003

We have selected and spatially separated the two conformers of 3-aminophenol (C$_6$H$_7$NO) present in a molecular beam. Analogous to the separation of ions based on their mass-to-charge ratios in a quadrupole mass filter, the neutral conformers are separated based on their different mass-to-dipole-moment ratios in an ac electric quadrupole selector. For a given ac frequency, the individual conformers experience different focusing forces, resulting in different transmissions through the selector. These experiments demonstrate that conformer-selected samples of large molecules can be prepared, offering new possibilities for the study of gas-phase biomolecules.

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