Sequential Activation of Molecular Breathing and Bending during Spin-Crossover Photoswitching Revealed by Femtosecond Optical and X-Ray Absorption Spectroscopy - Archive ouverte HAL Access content directly
Journal Articles Physical Review Letters Year : 2014

Sequential Activation of Molecular Breathing and Bending during Spin-Crossover Photoswitching Revealed by Femtosecond Optical and X-Ray Absorption Spectroscopy

Abstract

We study the basic mechanisms allowing light to photoswitch at molecular scale a spin-crossover material from low-to high-spin state. Combined femtosecond x-ray absorption performed at LCLS X-FEL and optical spectroscopy reveal that the structural stabilization of the photoinduced HS state results from a two step structural trapping. Molecular breathing vibrations are first activated and rapidly damped as part of the energy is sequentially transferred to molecular bending vibrations. During the photoswitching, the system follows a curved trajectory on the potential energy surface.
Fichier principal
Vignette du fichier
Cammarata Accepted.pdf (1.28 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01088100 , version 1 (28-11-2014)

Identifiers

Cite

Marco Cammarata, Roman Bertoni, Maciej Lorenc, Hervé Cailleau, Sergio Di Matteo, et al.. Sequential Activation of Molecular Breathing and Bending during Spin-Crossover Photoswitching Revealed by Femtosecond Optical and X-Ray Absorption Spectroscopy. Physical Review Letters, 2014, 113 (22), pp.227402. ⟨10.1103/PhysRevLett.113.227402⟩. ⟨hal-01088100⟩
546 View
439 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More