The photostability of two fluorescent dyes
Zhuang Ya-l · Dyeing & Finishing · 2013
Acrylic dyeings with self-made stilbene-type Fluorescent Orange DHEASPBr-C 2 and commercial cationic Fluorescent Yellow X-10GFF are exposed to the xenon lamp respectively,and the photostability of these two fluorescent dyes are explored. Fluorescence intensity of Fluorescent Yellow X-10GFF dyeings is greater than that of Fluorescent Orange DHEASPBr-C 2 dyeings with 0. 05%( omf) of dyes. Light fading of two dyeings occurs under xenon light conditions,and the latter is more serious. The photodegradation mechanism of the two dyes is demonstrated with density functional theory( DFT). Light fading of cationic Fluorescent Orange DHEASPBr-C 2 occurs more likely due to its much more active sites.