2024-03-29T13:08:31Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02005180
2022-10-31T02:31:58Z
1642837622505:1642837957109:1642837969834
1642838403551:1642838406414
Franck-Condon Analysis for the Carbonyl Stretching Progression Bands in Phosphorescence Spectra of 4-Chromanone at 4.2K
Miyagi, Yusei
宮城, 雄清
Phosphorescence spectra of 4-chromanone have been studied optically at 4.2 K in methyicyclohexane host. The energy level of the lowest excited triplet state is determined. The Franck-Condon envelope of the 4-chromanone phosphorescence ixhibits predominantly a three quanta v_<c=0> progression. The observation of the v_<c=0> sequence bands suggests a geometry change between the ground and T_1 states involving the carbonyl local site. From the Franck-Condon analysis for v_<c=0> sequence bands, the stable C = O bond distance in the phosphorescent state is estimated to be lengthening by 6.2 per cent of the ground state equilibrium distance upon electronic excitation to the T_1 state.
紀要論文
http://purl.org/coar/resource_type/c_6501
琉球大学理学部
1992-10
VoR
http://hdl.handle.net/20.500.12000/14212
0286-9640
AN00250774
琉球大学理学部紀要
Bulletin of the College of Science. University of the Ryukyus
54
39
35
eng
open access