✦ LIBER ✦

Fractal-like triplet-triplet annihilation kinetics in naphthalene-doped poly(methylmethacrylate)

✍ Scribed by E.Irene Newhouse; Raoul Kopelman

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 317 KB
Volume: 143
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(88)87020-9

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✦ Synopsis

Phospha~scence decays in naphthalene-doped ~ly(methylmethac~late) are non-ex~nent~l at high dopant levels. Delayed fluorescence can be readily observed, and its long-time limiting exponential decay time is less than 112 that of the phosphorescence, suggesting an effective fractai spectral dimension of 1.0 to 1.6. Other methods of presenting the data are consistent with this observation. Evidence that these anomalous kinetics are not due merely to energetic disorder in these samples is presented.