An anomalous fluorcsccnce near 380 nm is dctcctcd from heptanc soluuons on naphtho[ l,S-cd][ 1,2,6] thrsdrazmc (I), 6,7drhydroaccnaphthoI5.6-cd] [ I,?,61 thiadrxonc (2), Its unsaturated dcnvatrvc (4). and the tctrachloro denvattvc of I (3), when these substances arc excrtcd Into theSo -S2 absorpuon
โฆ LIBER โฆ
Raman excitation profiles, fluorescence spectra and excited state proton transfer of solid 1.8 dihydroxyanthraquinone at 8 K
โ Scribed by G. Smulevich; M.P. Marzocchi
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 223 KB
- Volume
- 141
- Category
- Article
- ISSN
- 0022-2860
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Trigonal crystals of K\*ReF, show intense r7 ( 2Tzs) -+r r ( 4AZg) luminescence at 4 and 77 K under 5 14 nm excitation. Extensive vibronic structure is resolved which is dominated by the vibronic origins due to the trigonal components ofthe Ye, vq and Y) modes of the ReFa-ion. The vibrational disper