TY  - JOUR
  - Ruth*, A. A.,Okeeffe, F. J.,Brint, R. P.,Mansfield, M. W. D.
  - 1997
  - April
  - Chemical Physics
  - The phosphorescence excitation spectrum of jet-cooled 4-H-1-benzopyrane-4-thione
  - Validated
  - ()
  - 217
  - 1
  - 83
  - 98
  - The phosphorescence excitation spectrum of isolated 4-H-1-benzopyrane-4-thione molecules (BPT) in a pulsed supersonic jet was investigated by direct excitation of the first excited triplet state, S-0 --> T-1. The electronic origin at 15828 cm(-1) is assigned to the transition S-0,S-0 --> T-1z,T-0, the transition S-0,S-0 reversible arrow T-1(xy,0) is too weak to be detected with this method. The triplet lifetime tau(T1z,0) approximate to 11 mu s is compatible with extrapolated values for BPT in dilute solutions. Vibronic transitions S-0,S-0 --> T-1z,T-v were measured up to similar to 1940 cm(-1) above the origin; the vibrational structure of TI was compared with the vibrational structure of S-2. S-0,S-0 --> S-1,S-v absorptions were not observed in the laser-induced phosphorescence experiment. Hot bands were observed under specific experimental conditions. (C) 1997 Elsevier Science B.V.The phosphorescence excitation spectrum of isolated 4-H-1-benzopyrane-4-thione molecules (BPT) in a pulsed supersonic jet was investigated by direct excitation of the first excited triplet state, S-0 --> T-1. The electronic origin at 15828 cm(-1) is assigned to the transition S-0,S-0 --> T-1z,T-0, the transition S-0,S-0 reversible arrow T-1(xy,0) is too weak to be detected with this method. The triplet lifetime tau(T1z,0) approximate to 11 mu s is compatible with extrapolated values for BPT in dilute solutions. Vibronic transitions S-0,S-0 --> T-1z,T-v were measured up to similar to 1940 cm(-1) above the origin; the vibrational structure of TI was compared with the vibrational structure of S-2. S-0,S-0 --> S-1,S-v absorptions were not observed in the laser-induced phosphorescence experiment. Hot bands were observed under specific experimental conditions. (C) 1997 Elsevier Science B.V.
  - 0301-01040301-0104
  - ://A1997WT72800007 ://A1997WT72800007
DA  - 1997/04
ER  - 

@article{V67924403,
   = {Ruth*,  A. A. and Okeeffe,  F. J. and Brint,  R. P. and Mansfield,  M. W. D. },
   = {1997},
   = {April},
   = {Chemical Physics},
   = {The phosphorescence excitation spectrum of jet-cooled 4-H-1-benzopyrane-4-thione},
   = {Validated},
   = {()},
   = {217},
   = {1},
  pages = {83--98},
   = {{The phosphorescence excitation spectrum of isolated 4-H-1-benzopyrane-4-thione molecules (BPT) in a pulsed supersonic jet was investigated by direct excitation of the first excited triplet state, S-0 --> T-1. The electronic origin at 15828 cm(-1) is assigned to the transition S-0,S-0 --> T-1z,T-0, the transition S-0,S-0 reversible arrow T-1(xy,0) is too weak to be detected with this method. The triplet lifetime tau(T1z,0) approximate to 11 mu s is compatible with extrapolated values for BPT in dilute solutions. Vibronic transitions S-0,S-0 --> T-1z,T-v were measured up to similar to 1940 cm(-1) above the origin; the vibrational structure of TI was compared with the vibrational structure of S-2. S-0,S-0 --> S-1,S-v absorptions were not observed in the laser-induced phosphorescence experiment. Hot bands were observed under specific experimental conditions. (C) 1997 Elsevier Science B.V.The phosphorescence excitation spectrum of isolated 4-H-1-benzopyrane-4-thione molecules (BPT) in a pulsed supersonic jet was investigated by direct excitation of the first excited triplet state, S-0 --> T-1. The electronic origin at 15828 cm(-1) is assigned to the transition S-0,S-0 --> T-1z,T-0, the transition S-0,S-0 reversible arrow T-1(xy,0) is too weak to be detected with this method. The triplet lifetime tau(T1z,0) approximate to 11 mu s is compatible with extrapolated values for BPT in dilute solutions. Vibronic transitions S-0,S-0 --> T-1z,T-v were measured up to similar to 1940 cm(-1) above the origin; the vibrational structure of TI was compared with the vibrational structure of S-2. S-0,S-0 --> S-1,S-v absorptions were not observed in the laser-induced phosphorescence experiment. Hot bands were observed under specific experimental conditions. (C) 1997 Elsevier Science B.V.}},
  issn = {0301-01040301-0104},
   = {://A1997WT72800007 ://A1997WT72800007},
  source = {IRIS}
}