Using laser-induced Coulomb explosion of aligned chiral molecules to determine their absolute configuration

Using laser-induced Coulomb explosion of aligned chiral molecules to determine their absolute configuration

The absolute configuration of chiral molecules in the gas phase is determined by femtosecond laser-induced Coulomb explosion and recording of the emission direction of critical ionic fragments. The spatial orientation of the 3,5-dibromo-3′,5′-diflouro-4′-cyanobiphenyl molecules studied is determined...

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Dades bibliogràfiques
Autors principals: Christensen, L, Nielsen, J, Slater, C, Lauer, A, Brouard, M, Stapelfeldt, H
Format: Journal article
Publicat: American Physical Society 2015
Descripció
Sumari:The absolute configuration of chiral molecules in the gas phase is determined by femtosecond laser-induced Coulomb explosion and recording of the emission direction of critical ionic fragments. The spatial orientation of the 3,5-dibromo-3′,5′-diflouro-4′-cyanobiphenyl molecules studied is determined by a combination of laser-induced alignment and time-of-flight measurement of F+ ion recoils. Hereby, the enatiomeric state of the molecules could be uniquely identified through analysis of the correlation of the angular distribution of F+ and Br+ ions. The method will apply to a range of molecules and allow imaging of chiral changes on ultrafast time scales.

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