Photochromism of indolino-benzopyrans studied by NMR and UV-visible spectroscopy

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S. Delbaere; J. Berthet; M. A. Salvador; G. Vermeersch; M. M. Oliveira;

The synthesis of photochromic 3,3-di(4′-fluorophenyl)-3H-benzopyrans fused to an indole moiety is described. The structures of photomerocyanines elucidated by NMR spectroscopy and spectrokinetic data (λmax⁡ of colored form, colorability, and rate constant of bleachin... View more
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