Time-resolved resonance Raman spectra were observed with the pump/probe technique using two 7 ns pulsed lasers for octaethylporphinato Cu(II) [(OEP)Cu] and its isotopomers (OEP-meso-d 4 and OEP-lSN) in the lowest excited triplet state. Raman bands were assigned on the basis of depolarization ratios
Triplet state time-resolved Raman investigation of biphenyl in the ultraviolet
β Scribed by G. Buntinx; A. Benbouazza; O. Poizat; V. Guichard
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 489 KB
- Volume
- 153
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Time-resolved resonance Raman spectra of the first triplet state of biphenyl derivatives are reported in the range 300-1800 cm-'. Convincing assignments and satisfactory correlation with the ground-state assignments are proposed. The DZh planar quinoidal character of T, biphenyl is shown by various characteristic spectral features which provide a fingerprint for this type of distortion.
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Resonance Raman spectra of the lowest excited triplet state of chlorophyll a are obtained in benzene and in methanol by pumping at 660 nm in the Q, band and pmbing at 460 nm which is close to the absorption maximum of the T, state. Tbe spectrum observed in polar methanol differs significantly from t
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