A. A. Ruth*, T. Fernholz, R. P. Brint and M. W. D. Mansfield;

1998

May

Chemical Physics Letters

The cavity ring-down absorption spectrum of the S0->T and S0-> S1 transition of jet-cooled 4-H-1-benzopyrane-4-thione

Validated

()

287

403

411

The very sensitive cavity ring-down method has been applied to the measurement of the absorption of 4-H-1-benzo-
pyrane-4-thione (BPT).in a supersonic jet in the wavelength region of the S0->S1 transition between 15800 and 16650 cm-1. The absorption energies of vibronic states corroborate previous assignments in the multi-photon excitation
and S0->T1phosphorescence excitation spectra of jet-cooled BPT. The symmetry forbidden 0,0 transition, S0,0->S1,0at
16522 cm-1, was found to be 7.5 times weaker than the absorption transition to the triplet origin, S0,0->T1z,0.

Elsevier

http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TFN-3T3KBR3-10-3N&_cdi=5231&_user=77869&_pii=S0009261498001766&_orig=search&_coverDate=05%2F01%2F1998&_sk=997129996&view=c&wchp=dGLzVtz-zSkzS&md5=c4fbc36703e32e08feb962cd83458f05&ie=/sdarticle.pdf

doi:10.1016/S0009-2614(98)00176-6