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The quantum yield of fluorescence of quinine bisulphate, azulene and 9,10-diphenylanthracene

โœ Scribed by B. Gelernt; A. Findeisen; A. Stein; D. Moore; J.A. Poole


Publisher
Elsevier Science
Year
1976
Weight
82 KB
Volume
5
Category
Article
ISSN
0047-2670

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๐Ÿ“œ SIMILAR VOLUMES


Relative fluorescence quantum yields usi
โœ William R. Ware; William Rothman ๐Ÿ“‚ Article ๐Ÿ“… 1976 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 502 KB

A new instrument intended for the measurement of relative fluorescence quantum yields is described. This instrument incorporates an integrating sphere to eliminate corrections due to polarization and to index of refraction phenomena. The primary standard was quinine bisulphate in 1'N H2SO4. Quantum

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The lifetimes of 9,10\_diphenylantllracenein dilute solutions ol cyclotexane and benzene at 25ยฐC have been found to k 7.58 2 0.04 and 6.95 \* 0.04 ns respccrively. hleasuwmcnts of the relative quanrun yields>how that the dependenca ': \_: on the solvent is caused by an incseased piobnbility for rmnk

Relative quantum yield of the S2 โ†’ S1 fl
โœ Dieter Klemp; Bernhard Nickel ๐Ÿ“‚ Article ๐Ÿ“… 1986 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 420 KB

The quantum yield ratio r=& +&+ . , ofthe &-So and +S, fluorescences from azulene has been redetermined. With azulene in isopentane at 190 K, r=455 & 100. This value agrees with the lower limit, given by Huppert, Jortner and Rentzepis, but is an order of magnitude lower than that given by Gillispie