1995 Fiscal Year Final Research Report Summary
Syntheses of Supramolecular Capsules with "On-off-type" Switch Functions
| Project/Area Number |
06453141
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Synthetic chemistry
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| Research Institution | KYUSHU UNIVERSITY |
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Principal Investigator |
SHINKAI Seiji Kyushu University, Faculty of Engineering, Professor, 工学部, 教授 (20038045)
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| Co-Investigator(Kenkyū-buntansha) |
IKEDA Atsuki Kyushu University, Faculty of Engineering, Research Associate, 工学部, 助手 (90274505)
TAKEUCHI Masayuki Kyushu University, Faculty of Engineering, Research Associate, 工学部, 助手 (70264083)
HAMACHI Itaru Kyushu University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (90202259)
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| Project Period (FY) |
1994 – 1995
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| Keywords | Inclusion / Molecular recognition / Calixarene / Molecular capsule / Metal recognition / Switch function |
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| Research Abstract |
Molecular capsules were synthesized by two different methods. The first method is to connect two upper edges of hemisphere-shaped calix [n] arenes. This methods were considerably difficult because of competition between intra-and intermolecular reactions. The capsule molecules composed of two calix [n] arenes show the enhanced affinity toward guest molecules. The second method is to cap or doubly-bridge one calix [n] arene. Capping of calix [6] arene with 1,3,5-tris (bromomethyl) benzene gave a molecule with a closed inner cavity. Double bridging of calix [8] arene with 1,2-bis (bromomethyl) benzene also gave a capsule molecule. They showed a kinetically suppressed exchange of guest ions and molecules.
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