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Mohamed MH, Wilson LD, Headley JV. Estimation of the surface accessible inclusion sites of β-cyclodextrin based copolymer materials. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2009.11.014] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Mohamed MH, Wilson LD, Headley JV, Peru KM. A spectral displacement study of cyclodextrin/naphthenic acids inclusion complexes. CAN J CHEM 2009. [DOI: 10.1139/v09-140] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The spectral displacement technique has been used to obtain 1:1 β-cyclodextrin (β-CD)/carboxylate anion equilibrium binding constants (K2) for some complex mixtures of naphthenic acids (NAs) and some examples of single-component NAs in aqueous solution. Three specific examples of single-component NAs were chosen with variable Z values as follows: 2-hexyldecanoic acid (Z = 0; S1), trans-4-pentylcyclohexanecarboxylic acid (Z = –2; S2), and dicyclohexylacetic acid (Z = –4; S3). The estimated K2 values for S1, S2, and S3 are as follows: 1.42 × 103 M–1, 52.2 × 104 M–1, and 13.1 × 104 M–1, respectively. The corresponding K2 values are 2.34 × 104 M–1 and 1.27 × 104 M–1 for commercial (Fluka) and industrial (Syncrude) sourced NAs, respectively. The magnitude of K2 for 1:1 complexes formed between β-CD and S1, S2, or S3 did not correlate with the degree of hydrogen deficiency (Z-series) but there was a correlation with the size of the guest molecules (n) examined in this study. The correlation between complex stability and the relative size of the lipophilic fragments of the guest molecule are related to the importance of the hydrophobic effect for inclusion of such carboxylic acid guest molecules within β-CD.
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Affiliation(s)
- Mohamed H. Mohamed
- Department of Chemistry, Thorvaldson Building, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
- Water Science and Technology Directorate, Environment Canada, 11 Innovation Boulevard, Saskatoon, SK S7N 3H5, Canada
| | - Lee D. Wilson
- Department of Chemistry, Thorvaldson Building, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
- Water Science and Technology Directorate, Environment Canada, 11 Innovation Boulevard, Saskatoon, SK S7N 3H5, Canada
| | - John V. Headley
- Department of Chemistry, Thorvaldson Building, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
- Water Science and Technology Directorate, Environment Canada, 11 Innovation Boulevard, Saskatoon, SK S7N 3H5, Canada
| | - Kerry M. Peru
- Department of Chemistry, Thorvaldson Building, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
- Water Science and Technology Directorate, Environment Canada, 11 Innovation Boulevard, Saskatoon, SK S7N 3H5, Canada
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Li DX, Chen CL, Liu BL, Liu YS. Molecular simulation of β-cyclodextrin inclusion complex with 2-phenylethyl alcohol. MOLECULAR SIMULATION 2009. [DOI: 10.1080/08927020802419334] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Nikitin K, Müller-Bunz H. Encapsulation of 4,4′-bipyridinium cations by two crown ether molecules: formation and structure of [3]pseudorotaxanes. NEW J CHEM 2009. [DOI: 10.1039/b9nj00414a] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Effects of cyclodextrins and saccharides on dual fluorescence of N,N-dimethyl-4-aminophenylboronic acid in water. J INCL PHENOM MACRO 2007. [DOI: 10.1007/s10847-007-9373-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yamauchi A, Sakashita Y, Hirose K, Hayashita T, Suzuki I. Pseudorotaxane-type fluorescent receptor exhibiting unique response to saccharides. Chem Commun (Camb) 2006:4312-4. [PMID: 17047851 DOI: 10.1039/b606342j] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pseudorotaxane formed by reacting beta-cyclodextrin bearing a phenylboronic acid residue with 1-heptyl-4-(4'-dimethylaminostyryl)pyridinium functioned as a novel fluorescent saccharide receptor having unique responses.
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Affiliation(s)
- Akiyo Yamauchi
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Sendai 980-8578, Japan
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