Spiropyrans and spirooxazines 6. the spectral and kinetic properties of 5-(4,5-diphenyl-1,3-oxazol-2-yl)-substituted spironaphthopyrans: An experimental and theoretical study

Article abstract of DOI:10.1007/s11172-011-0072-4

The spectral and kinetic properties of 5-(4,5-diphenyl-1,3-oxazol-2-yl) spiro[indoline-naphthopyran] derivatives were studied by experimental and theoretical methods. The additional long-wavelength maximum in the absorption spectra of compounds studied is due to the introduction of a diphenyloxazole fragment and corresponds to a π-π*electronic transition with a partial charge transfer character. Substituents have little effect on the kinetic parameters of the spironaphthopyrans studied.