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Phosphorescent lifetime and quantum yield measurements of K4Pt2(H2P2O5)4 from 1.6 to 300 K

✍ Scribed by J.T. Markert; D.P. Clements; M.R. Corson; J.K. Nagle

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 412 KB
Volume: 97
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(83)85011-8

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✦ Synopsis

l'hosphorcsccut lifetime mc.tsurements were performed on K~l't~(ll~l'~O~)~ in 2/l ethylene &col/u.mx solution. 3~ well as on green and brown crystalline forms, from 1.6 to 300 K. Quantum yield me.asurements on K4Pt2(l12P20S)J in solution were performed over the same temper&ure mngz Data for tbc dissolved sample were lit to yield a 4l.S cm-' cncrp splitting of the assumed 3A zu ewited term into E, (T = 4.2 ps) and A tu (r = 6.06 ms) components. The quantum yield for this sample vdried from 0.13 at 4.2 6 to 0.43 at 77 K. The green and brown crystalline fumls slwwc~i sinlilar bclwior. x\ith somex~hat shorter lifetimes. A purple crystalline form showed no detectable luminescence from 1.6 to 301) 1;.

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