TY - JOUR
T1 - Time-resolved fluorescence spectroscopy of porphyrin J-aggregates using optical Kerr gate methods
AU - Kano, Hideaki
AU - Kobayashi, Takayoshi
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2000
Y1 - 2000
N2 - We observed for the first time ultra-fast relaxation process due to internal conversion from S2 -exciton to S1-exciton in porphyrin J-aggregates using the optical Kerr gate method. The S2 fluorescence shows sharp spectra with almost zero Stokes shift. The decay time is less than the instrumental function and cannot be time-resolved by the Kerr gate method. The relaxation time of the S2-exciton was also measured by pump-probe spectroscopy with about 10 fs resolution, and the decay time, 130 ± 10 fs, was consistently obtained with that of the S2 fluorescence.
AB - We observed for the first time ultra-fast relaxation process due to internal conversion from S2 -exciton to S1-exciton in porphyrin J-aggregates using the optical Kerr gate method. The S2 fluorescence shows sharp spectra with almost zero Stokes shift. The decay time is less than the instrumental function and cannot be time-resolved by the Kerr gate method. The relaxation time of the S2-exciton was also measured by pump-probe spectroscopy with about 10 fs resolution, and the decay time, 130 ± 10 fs, was consistently obtained with that of the S2 fluorescence.
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U2 - 10.1002/jccs.200000114
DO - 10.1002/jccs.200000114
M3 - Article
AN - SCOPUS:0007724988
SN - 0009-4536
VL - 47
SP - 859
EP - 861
JO - Journal of the Chinese Chemical Society
JF - Journal of the Chinese Chemical Society
IS - 4 A
ER -