Singlet Excitation Energy Transfer in the Vinyl Polymers with Pendant Carbazolyl Groups
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- Akira Itaya
- Department of Chemical Engineering, Faculty of Engineering, Yamaguchi University
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- Ken-ichi Okamoto
- Department of Chemical Engineering, Faculty of Engineering, Yamaguchi University
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- Shigekazu Kusabayashi
- Department of Chemical Engineering, Faculty of Engineering, Yamaguchi University
書誌事項
- 公開日
- 1977-01-01
- 権利情報
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- https://academic.oup.com/pages/standard-publication-reuse-rights
- DOI
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- 10.1246/bcsj.50.22
- 10.1246/bcsj.49.2037
- 公開者
- Oxford University Press (OUP)
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説明
<jats:title>Abstract</jats:title> <jats:p>The migration of electronic excitation energy in films of poly(N-vinylcarbazole) (PVCz) prepared by the radical and cationic polymerizations(PVCz(r) and PVCz(c) respectively), poly[2-(9-carbazolyl)ethyl vinyl ether] (PCz-EVE), brominated PVCz(BPVCz), and poly(9-acryloylcarbazole) (PACz) has been studied by means of fluorescence-quenching experiments, using dimethyl terephthalate or perylene as a guest molecule. No clear difference in the concentration of the effective intrinsic trap sites was observed between PVCz(r) and PVCz(c) films. The concentration of the sandwich-like excimer site(cE) in a PVCz(r) film was nearly equal to that in a PVCz(c) film, while the concentration of the second excimer site (cS) in a PVCz(r) film was higher than that in a PVCz(c) film by a factor of about 1.6. The value of cE was much larger than that of cS for both films. The second excimer site seems to be a shallow trap. The number of carbazolyl chromophores covered by a singlet exciton during the lifetime was in the following order: PCzEVE>PVCz(r)≈PVCz(c)>PACz≈BPVCz. This order was explained by the concentration of the intrinsic trap sites depending on the distance between neighboring Cz chromophores, the lifetime of the singlet exciton, and the concentration of extrinsic trap sites.</jats:p>
収録刊行物
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- Bulletin of the Chemical Society of Japan
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Bulletin of the Chemical Society of Japan 50 (1), 22-26, 1977-01-01
Oxford University Press (OUP)
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詳細情報 詳細情報について
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- CRID
- 1360002219100743552
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- NII論文ID
- 130001971310
- 130001971029
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- ISSN
- 13480634
- 00092673
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