Polarized Absorption Spectra of TCNNQ-Aromatic Hydrocarbon Molecular Complexes
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概要
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Polarized absorption spectra of TCNNQ and TCNNQ-anthracene, pyrene, phenanthrene (Group 1), 1,2-benzanthracene, chrysene and triphenylene (Group 2) molecular complexes were measured in the frequency range of 13.5–42 kK at room temperature and 80°K. The mole ratio of donor to acceptor was found to be 2 : 1 for Group 1 complexes and 1 : 1 for Group 2 complexes. Two broad bands observed in each spectrum of these complexes were assigned to be the first and the second charge-transfer (CT) bands. The CT bands were enhanced in intensity and displaced to the red at 80°K. The first CT bands were confirmed to be associated with the charge transfer from the highest occupied molecular orbital (HOMO) of donor to the lowest vacant molecular orbital (LVMO) of acceptor. The charge transfer mechanism for the second CT bands may be divided into two classes; for Group 1 complexes it is mainly due to the second LVMO of acceptor, while for Group 2 complexes, in addition to this, there is a possibility of the charge transfer from the second HOMO of donor to the LVMO of acceptor.
- 公益社団法人 日本化学会の論文
著者
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Suzuki Noboru
Department Of Advanced Interdisciplinary Sciences Graduate School Of Engineering Utsunomiya Universi
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Yunoki Toru
Department of Materials Science, The University of Electro-Communications
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Suzuki Noboru
Department of Materials Science, The University of Electro-Communications
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