Selective recognition of the ditopic trimethylammonium cations by water-soluble aminocalix[4]arene |
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Authors: | Satish Balasaheb NimseJunbae Kim Keum-Soo Song Junghoon Kim Jeong Tae LeeVan-Thuan Nguyen Van-Thao TaTaisun Kim |
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Institution: | a Institute for Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 200-702, Republic of Korea b Biometrix Technology, Inc. 202 BioVenture Plaza, Chuncheon 200-161, Republic of Korea |
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Abstract: | In this Letter, the role of the depth of the cavity in the recognition processes of the guests by the hosts has been investigated. The hosts 2, 3 interact with both the cationic function and the aromatic moiety in the guests 5, 6 but with a slight preference for the cationic functions. The host 4 selectively recognizes the trimethylammonium functions of the guests 5 and 6. However, the host 1 selectively recognizes the aromatic moiety of the ditopic trimethylammonium guests 5 and 6. The recognition and orientation of the guest in the cavity of the host are directly dependent on the depth of the hydrophobic cavity of the host. |
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Keywords: | Calix[4]arene Host-guest Molecular recognition Cavity Water-soluble |
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