title: Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials.
abstract: Push-pull bithienylpyrrole-based azo dyes exhibit thermal isomerisation rates as fast as 1.4 μs in acetonitrile at 298 K becoming, thus, the fastest neutral azo dyes reported so far. These remarkably low relaxation times can be transferred into liquid-crystalline matrices enabling light-triggered oscillations in the optical density of the final material up to 11 kHz under ambient conditions.
authors.affiliation: Grup de Materials Orgànics, Institut de Nanociència i Nanotecnologia (IN2UB), Departament de Química Orgànica, Universitat de Barcelona, Martí i Franqués 1, E-08028, Barcelona, Spain. dvelasco@ub.edu.
authors.forename: Jaume
authors.initials: J
authors.lastname: Garcia-Amorós
authors.forename: M Cidália R
authors.initials: MC
authors.lastname: Castro
authors.forename: Paulo
authors.initials: P
authors.lastname: Coelho
authors.forename: M Manuela M
authors.initials: MM
authors.lastname: Raposo
authors.forename: Dolores
authors.initials: D
authors.lastname: Velasco