The effect of chain length on the melting temperature and size of dialkyldimethylammonium bromide vesicles
(2006) In Chemistry and Physics of Lipids 142(1-2). p.128-132- Abstract
- Differential scanning calorimetry (DSc) and dynamic light scattering (DLS) were used to obtain the gel to liquid-crystalline phase transition temperature (T-m) and the apparent hydrodynamic radius (R-h) of spontaneously formed cationic vesicles of dialkyldimethylammonium bromide salts (CnH2n+1)(2)(CH3)(2)N+center dot Br-, with varying chain lengths. The preparation of cationic vesicles from aqueous solution of these surfactants, for n = 12, 14, 16 and 18 (DDAB, DTDAB, DHDAB and DODAB, respectively), requires the knowledge of the surfactant gel to liquid-crystalline phase transition temperature, or melting temperature (T-m) since below this temperature these surfactants are poorly or not soluble in water. That series of cationic surfactants... (More)
- Differential scanning calorimetry (DSc) and dynamic light scattering (DLS) were used to obtain the gel to liquid-crystalline phase transition temperature (T-m) and the apparent hydrodynamic radius (R-h) of spontaneously formed cationic vesicles of dialkyldimethylammonium bromide salts (CnH2n+1)(2)(CH3)(2)N+center dot Br-, with varying chain lengths. The preparation of cationic vesicles from aqueous solution of these surfactants, for n = 12, 14, 16 and 18 (DDAB, DTDAB, DHDAB and DODAB, respectively), requires the knowledge of the surfactant gel to liquid-crystalline phase transition temperature, or melting temperature (T-m) since below this temperature these surfactants are poorly or not soluble in water. That series of cationic surfactants has been widely investigated as vesicle-forming surfactants, although C-12 and C-18, DDAB and DODAB are by far the most investigated from this series. The dependence of T-m of these surfactants on the number n of carbons in the surfactant tails is reported. The T-m obtained by DSC increases non-linearly with n, and the vesicle apparent radius R-h is about the same for DHDAB and DODAB, but much smaller for DDAB. (c) 2006 Elsevier Ireland Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/404607
- author
- Feitosa, E ; Jansson, Jörgen LU and Lindman, Björn LU
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- calorimetry, dynamic light scattering, melting temperature, hydrodynamic radius, differential scanning, phase behavior, DDAB, DTDAB, DHDAB, DODAB, cationic surfactants, dialkyldimethylammonium salts, cationic vesicles
- in
- Chemistry and Physics of Lipids
- volume
- 142
- issue
- 1-2
- pages
- 128 - 132
- publisher
- Elsevier
- external identifiers
-
- pmid:16574087
- wos:000238797000013
- scopus:33747208369
- ISSN
- 0009-3084
- DOI
- 10.1016/j.chemphyslip.2006.02.001
- language
- English
- LU publication?
- yes
- id
- 3ea0300e-fadc-42ba-9d42-21f87e707299 (old id 404607)
- date added to LUP
- 2016-04-01 16:34:55
- date last changed
- 2022-01-28 20:39:33
@article{3ea0300e-fadc-42ba-9d42-21f87e707299, abstract = {{Differential scanning calorimetry (DSc) and dynamic light scattering (DLS) were used to obtain the gel to liquid-crystalline phase transition temperature (T-m) and the apparent hydrodynamic radius (R-h) of spontaneously formed cationic vesicles of dialkyldimethylammonium bromide salts (CnH2n+1)(2)(CH3)(2)N+center dot Br-, with varying chain lengths. The preparation of cationic vesicles from aqueous solution of these surfactants, for n = 12, 14, 16 and 18 (DDAB, DTDAB, DHDAB and DODAB, respectively), requires the knowledge of the surfactant gel to liquid-crystalline phase transition temperature, or melting temperature (T-m) since below this temperature these surfactants are poorly or not soluble in water. That series of cationic surfactants has been widely investigated as vesicle-forming surfactants, although C-12 and C-18, DDAB and DODAB are by far the most investigated from this series. The dependence of T-m of these surfactants on the number n of carbons in the surfactant tails is reported. The T-m obtained by DSC increases non-linearly with n, and the vesicle apparent radius R-h is about the same for DHDAB and DODAB, but much smaller for DDAB. (c) 2006 Elsevier Ireland Ltd. All rights reserved.}}, author = {{Feitosa, E and Jansson, Jörgen and Lindman, Björn}}, issn = {{0009-3084}}, keywords = {{calorimetry; dynamic light scattering; melting temperature; hydrodynamic radius; differential scanning; phase behavior; DDAB; DTDAB; DHDAB; DODAB; cationic surfactants; dialkyldimethylammonium salts; cationic vesicles}}, language = {{eng}}, number = {{1-2}}, pages = {{128--132}}, publisher = {{Elsevier}}, series = {{Chemistry and Physics of Lipids}}, title = {{The effect of chain length on the melting temperature and size of dialkyldimethylammonium bromide vesicles}}, url = {{http://dx.doi.org/10.1016/j.chemphyslip.2006.02.001}}, doi = {{10.1016/j.chemphyslip.2006.02.001}}, volume = {{142}}, year = {{2006}}, }