TY - JOUR
T1 - Exciton transition energy and temperature dependence of ultrafast relaxation of self-trapped excitons in polydiacetylenes
AU - Yoshizawa, Masayuki
AU - Nishiyama, Katsuhiko
AU - Fujihira, Masamichi
AU - Kobayashi, Takayoshi
N1 - Funding Information:
The authors thank Dr. M. Taiji for his contribution in the construction of the amplifier of the femtosecond continuum to obtain a tunable femtoseo ond pump pulse. This research was partly supported by a Grant-in-Aid for Encouragement of Young Scientists (03740159) from the Ministry of Education, Science, and Culture of Japan and a grant from the Murata Science Foundation to M. Yoshizawa and grants from the Iketani Science Foundation and the Nagase Science Foundation to T. Kobayashi.
PY - 1993/5/28
Y1 - 1993/5/28
N2 - Exciton transition energies and temperature dependence of ultrafast relaxation processes have been investigated in polydiacetylene (PDA-(12,8) Langmuir-Blodgett films with several exciton transition energies using femtosecond absorption spectroscopy. The relaxation from self-trapped exciton to the ground state in PDA with 1.88 eV exciton energy is faster than that relaxation in PDA with larger exciton energy. The decay kinetics in PDAs can be explained in terms of tunneling in the configuration space from the self-trapped exciton to the ground state.
AB - Exciton transition energies and temperature dependence of ultrafast relaxation processes have been investigated in polydiacetylene (PDA-(12,8) Langmuir-Blodgett films with several exciton transition energies using femtosecond absorption spectroscopy. The relaxation from self-trapped exciton to the ground state in PDA with 1.88 eV exciton energy is faster than that relaxation in PDA with larger exciton energy. The decay kinetics in PDAs can be explained in terms of tunneling in the configuration space from the self-trapped exciton to the ground state.
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U2 - 10.1016/0009-2614(93)89030-L
DO - 10.1016/0009-2614(93)89030-L
M3 - Article
AN - SCOPUS:0000992060
SN - 0009-2614
VL - 207
SP - 461
EP - 467
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 4-6
ER -