title: Tuning the Activation Wavelength of Photochromic Oxazines.
abstract: The activation wavelength of a photochromic oxazine can be shifted bathochromically with the introduction of a methoxy substituent on the chromophore responsible for initiating the photochemical transformation. This structural modification permits switching under mild illumination conditions, enhances the photoisomerization quantum yield and ensures outstanding fatigue resistance. Thus, these results can guide the design of new members of this family of photoresponsive molecular switches with improved photochemical and photophysical properties.
authors.affiliation: Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Florida, 33146-0431, USA.
authors.forename: Subramani
authors.initials: S
authors.lastname: Swaminathan
authors.affiliation: Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Florida, 33146-0431, USA.|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.
authors.forename: Jaume
authors.initials: J
authors.lastname: Garcia-Amorós
authors.affiliation: Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Florida, 33146-0431, USA.
authors.forename: Ek Raj
authors.initials: ER
authors.lastname: Thapaliya
authors.affiliation: Grup O'Enginyeria Molecular, Institut Químic de Sarrià, Universitat Ramón Llull, Via Augusta 390, E-08017, Barcelona, Spain.
authors.forename: Santi
authors.initials: S
authors.lastname: Nonell
authors.affiliation: Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Florida, 33146-0431, USA.
authors.forename: Burjor
authors.initials: B
authors.lastname: Captain
authors.affiliation: Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Florida, 33146-0431, USA. fraymo@miami.edu.
authors.forename: Françisco M
authors.initials: FM
authors.lastname: Raymo
keywords: heterocycles; isomerization; molecular switches; oxazines; photochromism