Diffractive Imaging of Conical Intersections Amplified by Resonant Infrared Fields.
J Am Chem Soc
; 143(34): 13806-13815, 2021 09 01.
Article
en En
| MEDLINE
| ID: mdl-34402612
ABSTRACT
The fate of virtually all photochemical reactions is determined by conical intersections. These are energetically degenerate regions of molecular potential energy surfaces that strongly couple electronic states, thereby enabling fast relaxation channels. Their direct spectroscopic detection relies on weak features that are often buried beneath stronger, less interesting contributions. For azobenzene photoisomerization, a textbook photochemical reaction, we demonstrate how a resonant infrared field can be employed during the conical intersection passage to significantly enhance its coherence signatures in time-resolved X-ray diffraction while leaving the product yield intact. This transition-state amplification holds promise to bring signals of conical intersections above the detection threshold.
Texto completo:
1
Bases de datos:
MEDLINE
Idioma:
En
Revista:
J Am Chem Soc
Año:
2021
Tipo del documento:
Article
País de afiliación:
Estados Unidos