| SOLID-STATE HIGH RESOLUTION NMR STUDY ON POLY (2, 6-DIMETHYL-1,4-PHENYLENE OXIDE) |
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| 引用本文： | 晏欣,胡建治,姚树人,叶朝辉,张宝真. SOLID-STATE HIGH RESOLUTION NMR STUDY ON POLY (2, 6-DIMETHYL-1,4-PHENYLENE OXIDE)[J]. 高分子科学, 1995, 0(3): 252-258 |
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| 作者姓名： | 晏欣 胡建治 姚树人 叶朝辉 张宝真 |
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| 作者单位： | Lab. of Polymer Research，Naval Academy of Engineering，Wuhan 430033，Lab. of Magnetic Resonance and Atomic and Molecular Physics，The Chinese Academy of Sciences，Wuhan 430071，Lab. of Polymer Research，Naval Academy of Engineering，Wuhan 430033，Lab. of Magnetic Resonance and Atomic and Molecular Physics，The Chinese Academy of Sciences，Wuhan 430071，Lab. of Polymer Research，Naval Academy of Engineering，Wuhan 430033 |
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| 摘 要： | Experiments including ~(13)C spin-lattice relaxation, ~(13)C heteronuclear dipolar dephasing and~1H spin diffusion are performed on poly (2, 6-dimethyl-1, 4-phenylene oxide) (PPO). Theresults show that the rotation of the methyl groups in solid PPO is partially restricted, whichresults in a surprisingly efficient spin diffusion between the aromatic proton and methyl protoncharacterized by a diffusion time of 150μs. The results also show that the aromatic ring insolid PPO is rigid and twisted, which causes all aromatic carbons to be chemicallyunequivalent.
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| 收稿时间： | 1994-03-07 |
SOLID-STATE HIGH RESOLUTION NMR STUDY ON POLY (2, 6-DIMETHYL-1, 4-PHENYLENE OXIDE) |
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| YAN Xin,HU Jianzhi,YAO Shuren,YE Chaohui,ZHANG Baozhen. SOLID-STATE HIGH RESOLUTION NMR STUDY ON POLY (2, 6-DIMETHYL-1, 4-PHENYLENE OXIDE)[J]. Chinese Journal of Polymer Science, 1995, 0(3): 252-258 |
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| Authors: | YAN Xin HU Jianzhi YAO Shuren YE Chaohui ZHANG Baozhen |
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| Affiliation: | Lab. of Polymer Research; Naval Academy of Engineering; Wuhan 430033 Lab. of Magnetic Resonance and Atomic and Molecular Physics; The Chinese Academy of Sciences; Wuhan430071 |
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| Abstract: | Experiments including 13C spin-lattice relaxation,13C heteronuclear dipolar dephasing and1H spin diffusion are performed on poly (2, 6-dimethyl-1, 4-phenylene oxide) (PPO). Theresults show that the rotation of the methyl groups in solid PPO is partially restricted, whichresults in a surprisingly efficient spin diffusion between the aromatic proton and methyl protoncharacterized by a diffusion time of 150μs. The results also show that the aromatic ring insolid PPO is rigid and twisted, which causes all aromatic carbons to be chemically unequivalent. |
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| Keywords: | Solid-state high resolution NMR ~(13)C Spin-lattice relaxation ~(13)C Heteronuclear dipolar dephasing ~1H Spin diffusion Poly (2 6-dimethyl-1 4-phenylene oxide) |
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