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Polarized absorption, fluorescence and phosphorescence spectra of coronene in triphenylene matrix at 4.2 °K

✍ Scribed by Koichi Ohno; Hiroo Inokuchi

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
485 KB
Volume
23
Category
Article
ISSN
0009-2614

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✦ Synopsis

Highly resolved absorption. fluorcscencl: and phosphorescence spectra of coroncne molecules dissolved in a triphenylene solid-state matrix have been observed at 4.2"K. It is found that each spectrum is composed of two subspectra with difkrent polarization: one of them, subspecrrum I, consists of the bands allowed via intramolcculor vibronic interactions and the other, subspectrum 11, contains not only a rcmarknbly enhanced 0,O transition band in contrast to those observed for n-panffine solid solutions but also comprises some new bands. From the results of the analysis of these spectra it is su=cstcd that the coroncnc molecules in P triphenylene matrix arc distorted into ;1 symmetry lower than the D,h _ svmmetry of lrce coroncne molecules.

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