The new photochromic compounds of the invention have the formula of an indolino-spiro-oxazine comprising an indolinic part and an oxazine part, wherein said oxazine part comprises an unsaturated heterocycle with 5 links which comprises one or several atoms selected from nitrogen and sulphur. Preferably the heterocycle is orthocondensed with a benzenic ring of the oxazine part of the compound, and said heterocycle comprises an imine C.dbd.N-bond. The ozazine part may typically be comprised of a benzothiazol-oxazine group of of an indolino-oxazine group.
本发明的新型光致变色化合物具有以下
化学式:indolino-spiro-oxazine,包括一个indolinic部分和一个oxazine部分,其中所述的oxazine部分包括一个具有5个链的不饱和杂环,该杂环包括一个或多个从氮和
硫中选择的原子。优选地,该杂环与化合物的oxazine部分的苯环相邻,且该杂环包括一个imine C.dbd.N键。oxazine部分通常由benzothiazol-oxazine基团或indolino-oxazine基团组成。