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Rotational effects on fluorescence quantum yields of pyrazine and pyrimidine in the vapor phase

✍ Scribed by Hiroaki Baba; Masahisa Fujita; Katsuo Uchida


Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
333 KB
Volume
73
Category
Article
ISSN
0009-2614

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✦ Synopsis


Fluorescence-excitation and quantum-yield spectra were measured along the rotational contours of the O-O and lOa: bands of pyrazme and the O-O band of pyrimidme in the vapor phase at low pressure. A marked variation in quantum yield was observed. The yield spectra for the O-O bands exhiiit a very sharp peak near the band origin_ It is sumsted that the S-T coupling is enhanced with increasing rotation.


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