TY  - JOUR
  - Wick, M. T.,Nickel, B.,Ruth*, A. A.
  - 1993
  - November
  - Chemical Physics Letters
  - The S0->S3 Transition in 1,2-Benzanthracene: Experimental-Evidence for the Statistical Limit of Vibronic Coupling of S3 with S2
  - Validated
  - ()
  - 215
  - 1-3
  - 243
  - 250
  - The spectroscopic properties of an excited singlet electronic state S(n) (n greater-than-or-equal-to 1) of an aromatic compound depend on the type of vibronic coupling of S(n) with S(n-1). The main spectroscopic criterion for the statistical limit of vibronic coupling is a definite 0,0 transition S0.0-->S(n,0) whose homogeneous lineshape is Lorentzian. This criterion is satisfied by the S0-->S3 absorption band of 1,2-benzanthracene. In the excitation spectrum of the S1-->S0 fluorescence from isolated 1,2-benzanthracene molecules in a supersonic jet, the origin of the S0-->S3 absorption band consists of a single Lorentzian line with a width (fwhm) of 39 cm-1. Practically the same Lorentzian width is obtained with 1,2-benzanthracene in polymethylmethacrylate by transient spectral hole-burning. The corresponding lifetime of S3,0 is tau3,0=136 fs. The same order of magnitude Of tau3,0 is obtained from the quantum yield of the S3-->S0 fluorescence and the calculated radiative lifetime Of S3.The spectroscopic properties of an excited singlet electronic state S(n) (n greater-than-or-equal-to 1) of an aromatic compound depend on the type of vibronic coupling of S(n) with S(n-1). The main spectroscopic criterion for the statistical limit of vibronic coupling is a definite 0,0 transition S0.0-->S(n,0) whose homogeneous lineshape is Lorentzian. This criterion is satisfied by the S0-->S3 absorption band of 1,2-benzanthracene. In the excitation spectrum of the S1-->S0 fluorescence from isolated 1,2-benzanthracene molecules in a supersonic jet, the origin of the S0-->S3 absorption band consists of a single Lorentzian line with a width (fwhm) of 39 cm-1. Practically the same Lorentzian width is obtained with 1,2-benzanthracene in polymethylmethacrylate by transient spectral hole-burning. The corresponding lifetime of S3,0 is tau3,0=136 fs. The same order of magnitude Of tau3,0 is obtained from the quantum yield of the S3-->S0 fluorescence and the calculated radiative lifetime Of S3.
  - 0009-26140009-2614
  - ://A1993MJ42200043 ://A1993MJ42200043
DA  - 1993/11
ER  - 

@article{V67924429,
   = {Wick,  M. T. and Nickel,  B. and Ruth*,  A. A. },
   = {1993},
   = {November},
   = {Chemical Physics Letters},
   = {The S0->S3 Transition in 1,2-Benzanthracene: Experimental-Evidence for the Statistical Limit of Vibronic Coupling of S3 with S2},
   = {Validated},
   = {()},
   = {215},
   = {1-3},
  pages = {243--250},
   = {{The spectroscopic properties of an excited singlet electronic state S(n) (n greater-than-or-equal-to 1) of an aromatic compound depend on the type of vibronic coupling of S(n) with S(n-1). The main spectroscopic criterion for the statistical limit of vibronic coupling is a definite 0,0 transition S0.0-->S(n,0) whose homogeneous lineshape is Lorentzian. This criterion is satisfied by the S0-->S3 absorption band of 1,2-benzanthracene. In the excitation spectrum of the S1-->S0 fluorescence from isolated 1,2-benzanthracene molecules in a supersonic jet, the origin of the S0-->S3 absorption band consists of a single Lorentzian line with a width (fwhm) of 39 cm-1. Practically the same Lorentzian width is obtained with 1,2-benzanthracene in polymethylmethacrylate by transient spectral hole-burning. The corresponding lifetime of S3,0 is tau3,0=136 fs. The same order of magnitude Of tau3,0 is obtained from the quantum yield of the S3-->S0 fluorescence and the calculated radiative lifetime Of S3.The spectroscopic properties of an excited singlet electronic state S(n) (n greater-than-or-equal-to 1) of an aromatic compound depend on the type of vibronic coupling of S(n) with S(n-1). The main spectroscopic criterion for the statistical limit of vibronic coupling is a definite 0,0 transition S0.0-->S(n,0) whose homogeneous lineshape is Lorentzian. This criterion is satisfied by the S0-->S3 absorption band of 1,2-benzanthracene. In the excitation spectrum of the S1-->S0 fluorescence from isolated 1,2-benzanthracene molecules in a supersonic jet, the origin of the S0-->S3 absorption band consists of a single Lorentzian line with a width (fwhm) of 39 cm-1. Practically the same Lorentzian width is obtained with 1,2-benzanthracene in polymethylmethacrylate by transient spectral hole-burning. The corresponding lifetime of S3,0 is tau3,0=136 fs. The same order of magnitude Of tau3,0 is obtained from the quantum yield of the S3-->S0 fluorescence and the calculated radiative lifetime Of S3.}},
  issn = {0009-26140009-2614},
   = {://A1993MJ42200043 ://A1993MJ42200043},
  source = {IRIS}
}