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Specific Solvation of Benzyl Methacrylate in 1-Ethyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)amide Ionic Liquid
被引:28
作者:
Matsugami, Masaru
[1
]
Fujii, Kenta
[2
]
Ueki, Takeshi
[3
]
Kitazawa, Yuzo
[4
]
Umebayashi, Yasuhiro
[5
]
Watanabe, Masayoshi
[4
]
Shibayama, Mitsuhiro
[2
]
机构:
[1] Kumamoto Natl Coll Technol, Fac Liberal Studies, Koshi, Kumamoto 8611102, Japan
[2] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
[3] Univ Tokyo, Grad Sch Engn, Dept Mat Engn, Bunkyo Ku, Tokyo 1138656, Japan
[4] Yokohama Natl Univ, Dept Chem & Biotechnol, Yokohama, Kanagawa 2408501, Japan
[5] Kyushu Univ, Fac Sci, Dept Chem, Higashi Ku, Fukuoka 8128581, Japan
关键词:
SOLUTION TEMPERATURE BEHAVIOR;
POLY(BENZYL METHACRYLATE);
PHASE-TRANSITION;
BEAMLINE;
BL04B2;
D O I:
10.2116/analsci.29.311
中图分类号:
O65 [分析化学];
学科分类号:
070302 ;
081704 ;
摘要:
It has been established that poly(benzyl methacrylate) in a room-temperature ionic liquid, 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide ([C(2)mIm(+)] [TFSA(-)]), exhibits lower critical solution temperature (LCST)-type phase separation. In this work we investigated the solvation structure of benzyl methacrylate monomer in the ionic liquid by using high-energy X-ray diffraction with the aid of a molecular dynamics simulation. It was found that the C(2)mIm cation orderly distributes above and below a benzyl group within benzil methacrylate (BnMA), while the TFSA anion distributes around the equatorial position of the benzyl group where no cation distribution is found, with a weak interaction between TFSA and BnMA. The relationship between specific solvation and the LCST phase separation mechanism was considered at the molecular level.
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页码:311 / 314
页数:4
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