Viscosity-dependent dual phosphorescence of phenyl alkyl ketones

✍ Scribed by P.J. Wagner; M. May; A. Haug

• Publisher: Elsevier Science
• Year: 1972
• Tongue: English
• Weight: 269 KB
• Volume: 13
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(72)85007-3

✦ Synopsis

Several phenyl alkyl ketones display two overlapping short-lived pilosphorescenccs at 77"K, with O-O bands at 384 nm (74.5 kcal) and 397 nm (72.0 kcal). The hgher energy emission (T = S-10 msec) is favored in rigid methylcyclohesane glasses, while the proportion of lowcr-encrgy emission (T = 4-5 msec) increases with increasing amounts of 2-methylbutanc