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Volumn 103, Issue 22, 1999, Pages 4678-4686

Phase transitions in mixed monolayers of cationic surfactants and dodecanol at the air/water interface

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Indexed keywords


EID: 0000668060     PISSN: 15206106     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp9901444     Document Type: Article
Times cited : (50)

References (46)
  • 21
    • 6744248168 scopus 로고
    • Shen, Y. R. Nature 1989, 337, 519.
    • (1989) Nature , vol.337 , pp. 519
    • Shen, Y.R.1
  • 27
    • 20544447703 scopus 로고    scopus 로고
    • note
    • In this paper we will use the terms "solid" and "liquid" to refer to phases below and above the phase transition temperature in the mixed monolayers, by analogy with the comparable phases in dodecanol. We do not imply that we have measured the translational correlations in these phases.
  • 31
    • 20544448190 scopus 로고    scopus 로고
    • note
    • 2O (ref 33) or the nonresonant component of β from the surfactant molecules themselves (ref 34).
  • 35
    • 85088281503 scopus 로고    scopus 로고
    • note
    • + mode.
  • 37
    • 85088280727 scopus 로고    scopus 로고
    • note
    • -1.
  • 40
    • 20544462793 scopus 로고    scopus 로고
    • note
    • A semiquantitative calculation for a similar phase transition in a mixed monolayer of SDS and dodecanol predicted that the phase transition would take place over a period of about 1 h (ref 5).
  • 42
    • 85088279896 scopus 로고    scopus 로고
    • note
    • -1 to obtain a vibrational spectrum of the fully deuterated component only. We did not acquire spectra in the C-D stretching region in this study because the signal-to-noise ratio is poorer than in the C-H region. Previous work showed excellent agreement between data from the two frequency regions (ref 22).
  • 43
    • 20544468920 scopus 로고    scopus 로고
    • note
    • 3 (within the Lorentz model), where e is the relative permittivity of the monolayer. For typical values of ∈, a 10% change in e would change the line strength by only 5%.
  • 44
    • 20544473045 scopus 로고    scopus 로고
    • note
    • There is some evidence from theoretical calculations (ref 45) that the anisotropy in the Raman tensor, and hence in the hyperpolarizability tensor, is a nonlocal property of the methyl group and that consequently β may depend on the conformation of the hydrocarbon chain. A comparison of calculated values of the Raman tensor for trans- and gauche-butane suggests that the effect of conformation on β is likely to be at the percent level and can be safely neglected in the analysis here.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.