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Interactions between n-octyl and n-nonyl beta-D-glucosides and alpha- and beta-cyclodextrins as seen by self-diffusion NMR

Valente, Artur J M; Nilsson, Markus LU and Söderman, Olle LU (2005) In Journal of Colloid and Interface Science 281(1). p.218-224
Abstract
In this work H-1 NMR self-diffusion experiments have been performed to determine the self-diffusion coefficients of n-octyl beta-D-glucoside and n-nonyl beta-D-glucoside in alpha-cyclodextrin and beta-cyclodextrin solutions at 25 degreesC. Two questions are addressed. The first concerns the general influence on nonionic surfactant transport properties when cyclodextrins are present in solution. The second question concerns the influence of surfactant-chain length and cyclodextrin cavity volume on the association constant. The self-diffusion coefficients of the alkyl glucosides, in cyclodextrin-containing solutions, depend on the cyclodextrin concentration on account of the formation of complexes. The cyclodextrin diffusion is only mildly... (More)
In this work H-1 NMR self-diffusion experiments have been performed to determine the self-diffusion coefficients of n-octyl beta-D-glucoside and n-nonyl beta-D-glucoside in alpha-cyclodextrin and beta-cyclodextrin solutions at 25 degreesC. Two questions are addressed. The first concerns the general influence on nonionic surfactant transport properties when cyclodextrins are present in solution. The second question concerns the influence of surfactant-chain length and cyclodextrin cavity volume on the association constant. The self-diffusion coefficients of the alkyl glucosides, in cyclodextrin-containing solutions, depend on the cyclodextrin concentration on account of the formation of complexes. The cyclodextrin diffusion is only mildly influenced, since the complex has similar diffusion coefficients as the free cyclodextrin. There are some obstruction effects at the highest surfactant concentrations which decrease the cyclodextrin diffusion. A set of equations to model the self-diffusion coefficients of the surfactant and cyclodextrin was developed and is presented. On the basis of such equations, properties such as association constants, and micelle and complex diffusion coefficients can be estimated. (C) 2004 Elsevier Inc. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Colloid and Interface Science
volume
281
issue
1
pages
218 - 224
publisher
Elsevier
external identifiers
  • wos:000225659600027
  • pmid:15567399
  • scopus:9644255778
ISSN
1095-7103
DOI
10.1016/j.jcis.2004.08.018
language
English
LU publication?
yes
id
05e49ecd-50d3-4503-814d-5426650511bf (old id 157663)
date added to LUP
2007-07-12 13:37:11
date last changed
2017-09-03 03:42:35
@article{05e49ecd-50d3-4503-814d-5426650511bf,
  abstract     = {In this work H-1 NMR self-diffusion experiments have been performed to determine the self-diffusion coefficients of n-octyl beta-D-glucoside and n-nonyl beta-D-glucoside in alpha-cyclodextrin and beta-cyclodextrin solutions at 25 degreesC. Two questions are addressed. The first concerns the general influence on nonionic surfactant transport properties when cyclodextrins are present in solution. The second question concerns the influence of surfactant-chain length and cyclodextrin cavity volume on the association constant. The self-diffusion coefficients of the alkyl glucosides, in cyclodextrin-containing solutions, depend on the cyclodextrin concentration on account of the formation of complexes. The cyclodextrin diffusion is only mildly influenced, since the complex has similar diffusion coefficients as the free cyclodextrin. There are some obstruction effects at the highest surfactant concentrations which decrease the cyclodextrin diffusion. A set of equations to model the self-diffusion coefficients of the surfactant and cyclodextrin was developed and is presented. On the basis of such equations, properties such as association constants, and micelle and complex diffusion coefficients can be estimated. (C) 2004 Elsevier Inc. All rights reserved.},
  author       = {Valente, Artur J M and Nilsson, Markus and Söderman, Olle},
  issn         = {1095-7103},
  language     = {eng},
  number       = {1},
  pages        = {218--224},
  publisher    = {Elsevier},
  series       = {Journal of Colloid and Interface Science},
  title        = {Interactions between n-octyl and n-nonyl beta-D-glucosides and alpha- and beta-cyclodextrins as seen by self-diffusion NMR},
  url          = {http://dx.doi.org/10.1016/j.jcis.2004.08.018},
  volume       = {281},
  year         = {2005},
}