On the relationship between fluorescence and molecular geometry. Formation of a luminescent intramolecular anthracene-ethylene exciplex by electronic excitation of lepidopterene

✍ Scribed by Hans-Dieter Becker; Kjell Sandros

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 500 KB
• Volume: 55
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(78)84022-6

✦ Synopsis

Electronic excitation of the bridged benzenoid hydrocarbon Iepidopterene @.) in the crysWine state and in soiution gives rise to an anomalous luminescence which is attributed to the radiative deactivation of an intramolecular anthraceneethylene exciplex E*. The formation of E* and the regeneration of L are discussed in terms of a geometry-dependent reversible 14 + 21 cycIoaddition_ Relevant qmmtum yield data are presented in an energy Ievel diagram.