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Intersystem crossing in pyrene-h10 and pyrene-d10

โœ Scribed by P.F. Jones; S. Siegel

Book ID
103010432
Publisher
Elsevier Science
Year
1968
Tongue
English
Weight
281 KB
Volume
2
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

The phosphorescence intensity. phosphorescence Ufeetinie. nnd fleorescexm~ lUct!me a? pyfeac-hjo and pyrene-d termfned the t 0 were measured as a functlon of temp,rrrature from W'K to 300%. Us&g thte &U WP &A emperature dapendence of the rate constant for Mersy~&m craslng. We find thrill tire are two different routes for intersystem crossing from the Ioweet eu%ed sl.n@et sl8tc SI to ti ~UUMZS~ triplet state T,. In addition to a thermally activated traneltion from 8 lo the fIrsI ~~&t.ed trlplct t?tOti T,, intersystem crossing occur6 directly from 61 to To. Below -1 du

๐Ÿ“œ SIMILAR VOLUMES

Temperature dependence of intersystem cr
Temperature dependence of intersystem crossing of pyrene
โœ Hiroshi Hirano; Tohru Azumi ๐Ÿ“‚ Article ๐Ÿ“… 1982 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 68 KB

The temperature dependence of the rate constant for intersystem crossmg from St of pyrene w;ts dctcmuncd by mans of a method proposed prcnously. In contrast to the conclusions of Stevens, Thomaz and Jones, and of Kropp, Dawson snd Wmdsor, we conclude that both temperature-mdependenr and trmpcr~tured

Electronic structure and intersystem cro
Electronic structure and intersystem crossing in 9,10-diphenylanthracene
โœ Chen-Hanson Ting ๐Ÿ“‚ Article ๐Ÿ“… 1967 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 162 KB

The electronic structure of 9.10-dillhen2-!nnthraccnc (DPA) is calculated with Pariser-Parr m&hoi. The unique luminescent behavior of DPA can be understood from the energy shifts of triplet states relative \*': the -1La state.

Evidence for enhanced intersystem crossi
Evidence for enhanced intersystem crossing on pyrene fluorescence quenching with stable free radicals
โœ Tadashi Suzuki; Kinichi Obi ๐Ÿ“‚ Article ๐Ÿ“… 1995 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 331 KB

The quenching mechanism for pyrene fluorescence by TEMPO and galvinoxyl radicals has been studied by measuring the time evolution of the transient absorption. The quenching rate constants by both radicals were determined to be 1.6 x 101ยฐ mo1-1 dm 3 s -1 for TEMPO and 1.2 x 101ยฐ tool -1 dm 3 s -~ for