Excited-state dynamics of pentacene derivatives with stable radical substituents.
The excited-state dynamics of pentacene derivatives with stable radical substituents were evaluated in detail through transient absorption measurements. The derivatives showed ultrafast formation of triplet excited state(s) in the pentacene moiety from a photoexcited singlet state through the contributions of enhanced intersystem crossing and singlet fission. Detailed kinetic analyses for the transient absorption data were conducted to quantify the excited-state characteristics of the derivatives.
Division of Molecular Materials Science, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585 (Japan).
Akitaka
A
Ito
Akihiro
A
Shimizu
Noriaki
N
Kishida
Yusuke
Y
Kawanaka
Daisuke
D
Kosumi
Hideki
H
Hashimoto
Yoshio
Y
Teki
intersystem crossing; pentacene derivatives; radicals; singlet fission; time-resolved spectroscopy