Publicação
Fastest non-ionic azo dyes and transfer of their thermal isomerisation kinetics into liquid-crystalline materials
| Resumo: | 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 matrixes enabling light-triggered oscillations in the optical density of the final material up to 11 kHz under ambient conditions. |
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| Autores principais: | Garcia-Amorós, J. |
| Outros Autores: | Castro, Maria Cidália Rodrigues; Coelho, P.; Raposo, M. Manuela M.; Velasco, D. |
| Assunto: | Photochromism Azo dyes Heterocycles Synthesis Liquid-crystalline materials Molecular switches Push-pull heterocyclic systems |
| Ano: | 2016 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | 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 matrixes enabling light-triggered oscillations in the optical density of the final material up to 11 kHz under ambient conditions. |
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