Photochromism in spiroindolinonaphthoxazine dyes: Effects of alkyl and ester substituents on photochromic properties

Crystal structure of 4-(2-bromo-4-(6-morpholino-3-phenyl-3H-benzo[f]chromen-3-yl) cyclohexa-2,5-dien-1-yl)morpholine, C33H31BrN2O

“…In 1992, the family of biradical compounds was first explored by Toda and Tanaka [9]. During the past years, various types of organic photochromic compounds have aroused lots of interests because of their potential applications as photoswitchable molecular devices, optical memory storage media, as well as multi-color display [10][11][12][13][14][15][16][17]. For practical applications, some groups try to modulate the photochromic properties of diarylethenes, which has recently been reported.…”

Development of Photochromic Wood Material by Microcapsules

“…The colour returned to white when they were transferred indoors. The colour-changing phenomenon was evident and sensitive and could be ascribed to the reversible change of chemical structure in the spirooxazine compound (Partington and Towns 2014).…”

Ultrasound-aided dyeing of cotton fabric with spirooxazines and photochromic properties

“…Among the photochromic dyes, spirooxazines have been extensively investigated due to their ability to impart intense photocoloration in appropriate application media, excellent fatigue resistance and ease of synthesis [9][10][11][12][13][14]. Spirooxazines are generally colorless, however, they become intensely colored when exposed to UV light, and once again become colorless when the light source is removed.…”