Electronic relaxation rate constants for specific rotational levels of CH (A 'A and B \*Z-) have been measured. In contrast to similar measurements made earlier for other hydrides, the results obtained in the present work show an increase in the quenching efficiency upon rotational excitation. The e
Rotational effects on the quenching of electronically excited CH
β Scribed by E. Hontzopoulos; Y.P. Vlahoyannis; C. Fotakis
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 445 KB
- Volume
- 147
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Electronically excited CH was produced by multiphoton dissociation of acetone at 248 nm. Measurements of the electronic relaxation of specific rotational levels of CH( A 'A) by acetone show that the quenching efficiency decreases as N' is increased, in accordance with room temperature results on OH* and NH* and theoretical predictions.
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The quenching of n,p\* singlet-excited 2,3-diazabicyclo[2.2.2]oct-2-ene, a very weak electron acceptor, by 26 aliphatic and aromatic amines was investigated in benzene. This photoreaction entails fluorescence quenching through exciplex formation with subsequent hydrogen atom abstraction from the N-H
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