With hqwd \_wlutlons of the aromstlc ketones anthraqumone and 'lamhone, a P-type delayed fluorescence from upper ewited smglet states, resultmg from tnplet-tnplet annihdation, has been obsened. Some peculurltles of the triplet-triplet annihilation of aromatlc ketones are dacussed.
Biphotonic laser excitation of upper singlet state fluorescence in organic dyes
โ Scribed by Gail C. Orner; Michael R. Topp
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 537 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
Fluorcscencc spectra are presented, originstins from upper excited singlet stntcs in three santhene dyes. The cxpcrimentnl method, using biphoknic pulsed laser escitation, is shown to have advantages over sir&-photon ultraviolet irradiation. It is further shown that the observed spectra dcpcnd on the nature 2nd timing of the cscitntion Crcquencies.
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