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Updated: Jun 21, 2026

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
Published on: May 29, 2018
Successive dynamical steps of photoinduced switching of a molecular Fe(III) spin-crossover material by time-resolved
1Institut de Physique de Rennes, Université de Rennes 1-CNRS, UMR 6251, 35042 Rennes, France.
Abstract:
We investigate the out-of-equilibrium switching dynamics of a molecular Fe(III) spin-crossover solid triggered by a femtosecond laser flash. The time-resolved x-ray diffraction and optical results show that the dynamics span from subpicosecond local photoswitching followed by volume expansion (nanosecond) and thermal switching (microsecond). We present a physical picture of the consecutive steps in the photoswitching of molecular materials.
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