TY - JOUR
T1 - Isolated ultracold porphyrins in supersonic expansions. I. Free-base tetraphenylporphyrin and Zn-tetraphenylporphyrin
AU - Even, Uzi
AU - Magen, Jacob
AU - Jortner, Joshua
AU - Friedman, Joel
AU - Levanon, Haim
PY - 1982/1/1
Y1 - 1982/1/1
N2 - In this paper we report the results of an experimental study of the fluorescence excitation spectra and of the time-resolved emission of Zn-tetraphenylporphyrin (ZnTPP) and of free-base tetraphenylporphyrin (H2TPP) seeded in pulsed supersonic expansions of He. We have studied the S 0→S1 transition (the Q band) and the S 0→S2 transition (the Soret, B band) of ZnTPP, as well as the S0→S1α, transition (the Qx band), the S0→S1y transition (the Qy band), and the S0→S2x transition (the Bx band) of H2TPP. Information was obtained on the electronic energy levels, the vibrational level structure, the details of low-frequency nuclear motion, and some characteristics of electronic relaxation.
AB - In this paper we report the results of an experimental study of the fluorescence excitation spectra and of the time-resolved emission of Zn-tetraphenylporphyrin (ZnTPP) and of free-base tetraphenylporphyrin (H2TPP) seeded in pulsed supersonic expansions of He. We have studied the S 0→S1 transition (the Q band) and the S 0→S2 transition (the Soret, B band) of ZnTPP, as well as the S0→S1α, transition (the Qx band), the S0→S1y transition (the Qy band), and the S0→S2x transition (the Bx band) of H2TPP. Information was obtained on the electronic energy levels, the vibrational level structure, the details of low-frequency nuclear motion, and some characteristics of electronic relaxation.
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U2 - 10.1063/1.444438
DO - 10.1063/1.444438
M3 - Article
AN - SCOPUS:0000499643
SN - 0021-9606
VL - 77
SP - 4374
EP - 4383
JO - The Journal of Chemical Physics
JF - The Journal of Chemical Physics
IS - 9
ER -