10.1021/ol1013679.s001 Jaume Garcia-Amorós Jaume Garcia-Amorós Walter A. Massad Walter A. Massad Santi Nonell Santi Nonell Dolores Velasco Dolores Velasco Fast Isomerizing Methyl Iodide Azopyridinium Salts for Molecular Switches American Chemical Society 2010 irradiation sample mixture usefulness Large absorbance changes Molecular Switches nematic Fast Isomerizing Methyl Iodide Azopyridinium Salts azopyridinium methyl iodide salts 355 nm recovery 2010-08-06 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/Fast_Isomerizing_Methyl_Iodide_Azopyridinium_Salts_for_Molecular_Switches/2745349 The usefulness of azopyridinium methyl iodide salts for designing new promising light-controlled molecular switches is presented. Large absorbance changes have been produced in the samples by irradiation with light at λ = 355 nm. The thermal recovery of the initial state took place completely within 130−450 ms, which is much faster than that reported previously for other push−pull azobenzene-doped nematic mixtures.