575451-96-6Relevant articles and documents
Control of the fading properties of photochromic 3,3-diaryl-3H-naphtho[2,1-b]pyrans
Gabbutt, Christopher D.,Heron, B. Mark,Instone, Alicia C.
, p. 843 - 855 (2007/10/03)
The synthesis and spectroscopic properties of some novel photochromic 3H-naphtho[2,1-b]pyrans are reported. Varying the size of an ortho-substituent on one of the geminal aryl rings allows the rate of fade of the photogenerated color to be controlled.