Alcohol size as a factor in the ternary complexes formed with pyrene and .beta.-cyclodextrin
| Autor: | Isiah M. Warner, D. H. Live, A. Munoz de la Pena, Jonathan B. Zung, K. L. Greene, Thilivhali T. Ndou |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
chemistry.chemical_classification
Cyclodextrin Alcohol General Chemistry Biochemistry Catalysis Inclusion compound chemistry.chemical_compound Colloid and Surface Chemistry chemistry Stability constants of complexes Organic chemistry Pyrene Physical chemistry Ternary operation Stoichiometry Equilibrium constant |
| Zdroj: | Journal of the American Chemical Society. 113:1572-1577 |
| ISSN: | 1520-5126 0002-7863 |
| DOI: | 10.1021/ja00005a019 |
| Popis: | The of alcohols on the β-cyclodextrin (CD)/pyrene complex has been examined by using steady-state fluorescence measurements. A 1:1 stoichiometric ratio has been found between the alcohol and β-CD/pyrene/alcohol is proposed. Apparent formation constants in the presence of different alcohols have been determined by using the variation of the I/III vibronic band ration of pyrene with increasing cyclodextrin concentration. The 2:1 β−CD/pyrene stoichiometry for the binary complex has also been confirmed. The present study demonstrates that proper size matching among the pyrene, the cyclodextrin, and the alcohol leads to substantially larger equilibrium constants for the ternary complexes |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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