Abstract
The inclusion of ethylammonium, N-methylpyridinium cations and native L-α-amino acids by the watersoluble pentasulfonatocalix[5]arene 1 has been investigated at neutral pH by 1H NMR. The complexation behavior has been compared with that of the homologous tetrasulfonatocalix[4]arene 2. Unlike host 2, host 1 exhibits high selectivity in the recognition of the investigated guests.
Original language | English |
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Pages (from-to) | 598-603 |
Number of pages | 6 |
Journal | Letters in Organic Chemistry |
Volume | 6 |
Issue number | 8 |
DOIs | |
Publication status | Published - Dec 2009 |
Keywords
- 1H NMR titration
- Calixarenes
- Molecular recognition
- Water-soluble
ASJC Scopus subject areas
- Organic Chemistry
- Biochemistry