| abstract |
The invention relates to the field of organic functional materials, and provides a multi-substituted indene-fused ring naphthopyran photochromic compound and its preparation method and application. The synthesis method does not produce isomer phenomenon when synthesizing intermediates and target products. Therefore, it is easy to separate and purify, increase the yield, and reduce production costs; on the other hand, it is easy to introduce a variety of substituents into the molecular skeleton of the indene-fused ring naphthopyran photochromic compound, thereby regulating the photochromic performance and expanding the photochromic properties. Range of applications for color-changing compounds. |