Interaction between covalent DNA gels and a cationic surfactant
(2006) In Biomacromolecules 7(4). p.1090-1095- Abstract
- The interaction of covalently cross-linked double-stranded (ds) DNA gels and cetyltrimethylammonium bromide (CTAB) is investigated. The volume transition of the gels that follows the absorption of the oppositely charged surfactant from aqueous solution is studied. As do other polyelectrolyte networks, DNA networks form complexes with oppositely charged surfactant micelles at surfactant concentrations far below the critical micelle concentration (cmc) of the polymer-free solution. The size of the absorbed surfactant aggregates is determined from time-resolved fluorescence quenching (TRFQ). At low surfactant concentrations, small discrete micelles (160 < N < 210) are found, whereas large micelles (N > 500) form at surfactant... (More)
- The interaction of covalently cross-linked double-stranded (ds) DNA gels and cetyltrimethylammonium bromide (CTAB) is investigated. The volume transition of the gels that follows the absorption of the oppositely charged surfactant from aqueous solution is studied. As do other polyelectrolyte networks, DNA networks form complexes with oppositely charged surfactant micelles at surfactant concentrations far below the critical micelle concentration (cmc) of the polymer-free solution. The size of the absorbed surfactant aggregates is determined from time-resolved fluorescence quenching (TRFQ). At low surfactant concentrations, small discrete micelles (160 < N < 210) are found, whereas large micelles (N > 500) form at surfactant concentrations of 1 mM. When the DNA is in excess of the surfactant, the surfactant binding is essentially quantitative. The gel volume decreases by 90% when the surfactant to DNA charge ratio, beta, increases from 0 to 1. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/414209
- author
- Costa, Diana LU ; Hansson, P ; Schneider, S ; Miguel, MG and Lindman, Björn LU
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Biomacromolecules
- volume
- 7
- issue
- 4
- pages
- 1090 - 1095
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000236868800013
- pmid:16602725
- scopus:33646341212
- ISSN
- 1526-4602
- DOI
- 10.1021/bm0508919
- language
- English
- LU publication?
- yes
- id
- d2721247-d80f-4d06-8d50-32621b712997 (old id 414209)
- date added to LUP
- 2016-04-01 12:08:49
- date last changed
- 2022-01-26 23:30:43
@article{d2721247-d80f-4d06-8d50-32621b712997,
abstract = {{The interaction of covalently cross-linked double-stranded (ds) DNA gels and cetyltrimethylammonium bromide (CTAB) is investigated. The volume transition of the gels that follows the absorption of the oppositely charged surfactant from aqueous solution is studied. As do other polyelectrolyte networks, DNA networks form complexes with oppositely charged surfactant micelles at surfactant concentrations far below the critical micelle concentration (cmc) of the polymer-free solution. The size of the absorbed surfactant aggregates is determined from time-resolved fluorescence quenching (TRFQ). At low surfactant concentrations, small discrete micelles (160 < N < 210) are found, whereas large micelles (N > 500) form at surfactant concentrations of 1 mM. When the DNA is in excess of the surfactant, the surfactant binding is essentially quantitative. The gel volume decreases by 90% when the surfactant to DNA charge ratio, beta, increases from 0 to 1.}},
author = {{Costa, Diana and Hansson, P and Schneider, S and Miguel, MG and Lindman, Björn}},
issn = {{1526-4602}},
language = {{eng}},
number = {{4}},
pages = {{1090--1095}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Biomacromolecules}},
title = {{Interaction between covalent DNA gels and a cationic surfactant}},
url = {{http://dx.doi.org/10.1021/bm0508919}},
doi = {{10.1021/bm0508919}},
volume = {{7}},
year = {{2006}},
}