Fluorescence quenching by oxygen as derived from high excitation intensity experiments

✍ Scribed by I.B. Berlman; C.R. Goldschmidt; G. Stein; Y. Tomkiewicz; A. Weinreb

• Publisher: Elsevier Science
• Year: 1969
• Tongue: English
• Weight: 275 KB
• Volume: 4
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(69)80256-3

✦ Synopsis

The quenching by oxygen of the fluorescence of concentrated pyrene solutions in toluene occurs in less than 2 x lo-lo sec. The molecule of 02 is available for further quenching after this time. The results are interpreted in terms of a mechanism in v5hich a pyrene excimer is quenched by rapid reversible charge transfer complex formation with 02, followed by energy transfer to the ground state configuration thus formed.