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Volumn 114, Issue 6, 2010, Pages 2165-2174

Selectivity and stoichiometry boosting of β?-Cyclodextrin in Cationic/Anionic surfactant Systems: When Host-Guest equilibrium meets biased aggregation equilibrium

Author keywords

[No Author keywords available]

Indexed keywords

AGGREGATES; CATIONIC SURFACTANTS; DATA STORAGE EQUIPMENT; STOICHIOMETRY;

EID: 77649111697     PISSN: 15206106     EISSN: 15205207     Source Type: Journal    
DOI: 10.1021/jp911092y     Document Type: Article
Times cited : (35)

References (59)
  • 55
    • 85067745991 scopus 로고    scopus 로고
    • note
    • Actually, the Le Chatelier principle also predicts that β-CD will form more complexes with the surfactant at a higher concentration. According to this principle, one might intuitively expect the difference to be similar to the difference in concentrations of the two surfactants. In the present case (SDS/DEAB 15/5 mM), it was found that the selectivity of β-CD to SDS over that to DEAB is ∼100:1, much larger than the ratio of concentrations of SDS and DEAB, 3:1. Therefore, the interplay between the host-guest and biased aggregation equilibria is within the frame of the Le Chatelier principle, yet they are not exactly the same. In addition, the present thermodynamic model can predict the exact value of the selectivity, whereas the Le Chatelier principle cannot.
  • 56
    • 85067763033 scopus 로고    scopus 로고
    • Recently, it has been established that β-CD can form aggregates with diameters ∼200 nm above 3 mM by itself; see
    • Recently, it has been established that β-CD can form aggregates with diameters ∼200 nm above 3 mM by itself; see:
  • 58
    • 35948955153 scopus 로고    scopus 로고
    • and references thereinHowever, in the present case of SDS/DEAB/β-CD solutions, most ofβ-CD will form complexes with SDS or DEAB, and the complexes will not aggregate, as evidenced by the diffusion coefficient of the complexes (measured by PGSE-NMR)
    • (b) Rossi, S.; Bonini, M. Nostra, P. L.; Baglioni, P. Langmuir 2007, 23, 10959, and references thereinHowever, in the present case of SDS/DEAB/β-CD solutions, most ofβ-CD will form complexes with SDS or DEAB, and the complexes will not aggregate, as evidenced by the diffusion coefficient of the complexes (measured by PGSE-NMR).
    • (2007) Langmuir , vol.23 , pp. 10959
    • Rossi, S.1    Bonini, M.2    Nostra, P.L.3    Baglioni, P.4


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.