Synthesis and Photochromism of Naphthacenequinone Phenolic Resin

A new photochromic phenolic resin(3) was synthesized by a one-step method, i.e.6-chloro-5,12-naphthacenequinone(1) reacting with phenolic resin. The polymer(3) has similar photochromic properties with photochromic compound 6-4-\phenoxy-5,12-naphthaceneq