Electronic processes in hetero-excimers and the mechanism of fluorescence quenching

✍ Scribed by Noboru Mataga; Tadashi Okada; Noriyuki Yamamoto

• Publisher: Elsevier Science
• Year: 1967
• Tongue: English
• Weight: 306 KB
• Volume: 1
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(67)85003-6

✦ Synopsis

The electronic processes have been studied in the charge transfe r type complex of pyrene and N, N-dimethylanfline, which is formed only in the electronically excited state. The change of the electronic structure of the complex caused by the interaction with the polar solvent molecules has &en deimonstrated by measuring the fluorescence quantum yield and the fluorescence decay time of the complex in various solvents, and has heen interpreted by means of quantum chemical considerations. On the basis of these results, it has been pointed out that a strong charge transfer in the escitd state can lead to the fluorescence quenching without the ionic dissociation.