2012 Fiscal Year Final Research Report
Neutron Scattering Study on Dynamics of Small Molecules Stored in Cages of Polymer Crystal
| Project/Area Number |
21550015
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | Osaka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
OKUYAMA Kenji 大阪大学, 大学院・理学研究科, 特任研究員 (30038020)
KAWAGUCHI Tatsuya 大阪大学, 大学院・理学研究科, 助教 (10314353)
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| Project Period (FY) |
2009 – 2012
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| Keywords | 分子動力学 / 中性子散乱 / 高分子包接錯体 / 共結晶 / 中性子小角散乱 / X線散乱 / 拡散係数 / SAXS・WAXS同時測定 |
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| Research Abstract |
Syndiotactic polystyrene (sPS) forms co-crystals, where low-mass molecules are stored as guests in the crystal lattice of sPS. The guest exchange phenomenon in the sPS co-crystals were followed by time-resolved small-angle neutron scattering and time-resolved simultaneous small-angle and wide-angle X-ray scattering and also IR spectroscopy, which enabled to estimate the diffusion coefficients of guest molecules in the crystalline region of sPS co-crystals and clarified the changes in lattice and higher order structures. It has been also clarified that oligomeric compounds consisting of ethylene oxide repeat units can be introduced into sPS lattice as guests by guest exchange procedure.
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