期刊
TETRAHEDRON LETTERS
卷 41, 期 48, 页码 9327-9330出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(00)01687-7
关键词
calixarenes; molecular recognition; NMR
The inclusion of small neutral organic guests (alcohols, ketones and nitriles) by water-soluble calix[4]arene receptors was studied by H-1 NMR spectroscopy at neutral pH. The guests are included into the host hydrophobic cavity by their apolar aliphatic residues. The binding constants, determined by H-1 NMR titrations, confirm the importance of charge assistance in the apolar binding of guests inside calixarene cavities and highlight the role played by the conformational properties of the receptors in the recognition process. (C) 2000 Elsevier Science Ltd. All rights reserved.
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