Optical absorption by X-traps in anthracene

✍ Scribed by A. Brillante; D.P. Craig; A.W.-H. Mau; J. Rajikan

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 455 KB
• Volume: 31
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(75)85005-6

✦ Synopsis

X-traps in anthracene crystal (host) induced by pyrenc and 2-hydroxyanthracene as impurities,(yests) have been measured in absorption. 'Ihe pyrene X-trap is already well known in fluorescence; the absorption m~surements show that the concentrations of X-traps and of the pyrcne 'de equal to within an order of magnitude. ihe 2hq'droxyanthracene induced 'X-trap, not hitherto observed, gives a strong absorption, at 24988 cm -r (vat.

). An extremely weak fluorescence line, almost totaly quenched, has now been found at 24986 cm -'. The trap concenkation k a@o of the same order as that of the inducing impurity.