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Sensitized triplet-triplet absorption of biphenylene

โœ Scribed by C. Tetreau; D. Lavalette; E.J. Land; F. Peradejordi


Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
402 KB
Volume
17
Category
Article
ISSN
0009-2614

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โœฆ Synopsis


Triplet-triplet absorption of biphenylene was sensitized by naphthalene. A band is observed at 29 500 cm-l and is assigned to a predicted 3B& + 3B& transition. Triplet biphenylene has a lifetime of 100 psec in solution. Nonradiative processes are thought to affect mainly the first singlet state of biphenylene.


๐Ÿ“œ SIMILAR VOLUMES


Triplet-triplet absorption of biphenyl
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Biphenyl in a cooled alcoholic solution shows structured TT absorption bands, weak in the visible and strong in the UV with a maximum at 3'7OOA and en Er= 50 000 litre mole-1 cm-I. Calculations using the PPP SCF method with a large configuration interaction are done using a planar model. The influen

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Triplet-triplet absorption spectra of coumarin and 7-hydrox~coumarin in rigid alcoholic solutions at 1 IFE; were reco&ed. Measurement of ground state depletion allowed the determination of the molar extinction coefficients of the triplet bands, for both compounds. CNDO/S calculations of the triplet-