✦ LIBER ✦

Phosphorescence investigation of xanthone in n-hexane at 77 and 4.2 K

✍ Scribed by Robert E. Connors; Paul S. Walsh

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 273 KB
Volume: 52
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(77)80481-8

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✦ Synopsis

The phosphorcsccncc spectrum of xdnthonc cmbeddcd in a polycrystallinc matrix of n-hcxanc has been measured at 77 and 4.2 K. Dramatic diffcrcnccs in spectral features and triplet lifetime arc evident at these two tempcraturcs. The cmitting species at 4.2 K is assigned as predominantly 3(zz*) in character; whereas. the phosphorcsccncc state observed at 77 K is clearly 3(nn*).

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