Author/Authors :
Paulo J Coelho، نويسنده , , Luis M Carvalho، نويسنده , , Sofia Abrantes، نويسنده , , M Manuel Oliveira، نويسنده , , Ana M.F Oliveira-Campos، نويسنده , , André Samat، نويسنده , , Robert Guglielmetti، نويسنده ,
Abstract :
Several new spiro[thioxanthene-naphthopyrans] were prepared from substituted naphthols using a one step reaction. The photochromic properties of the new compounds were studied under flash photolysis and continuous irradiation. Compared to reference compounds general significant bathochromic shifts in the absorption spectra of the open forms, faster thermal bleaching kinetics and interesting fatigue resistances were observed.
Keywords :
Photochromism , naphthopyrans , Heterocycles , spectrokinetics
