1.
Org Lett
; 10(21): 4823-6, 2008 Nov 06.
Artigo
em Inglês
| MEDLINE
| ID: mdl-18826232
RESUMO
Two coumarin-based spiropyran derivatives were synthesized and characterized in two steps to explore their photochromic properties. Both prepared compounds are sensitive to UV light and change colors upon irradiation. The resulting photogenerated zwitterions revert to the original compounds while being heated. A new family of organic photochromic colorants is introduced.