Main phase transition depression by incorporation of alkanols in DPPC vesicles in the gel state: Influence of the solute topology

L. F. Aguilar; C. P. Sotomayor; E. A. Lissi

doi:10.1016/0927-7757(95)03424-2

Main phase transition depression by incorporation of alkanols in DPPC vesicles in the gel state: Influence of the solute topology

L. F. Aguilar, C. P. Sotomayor, E. A. Lissi

INSTITUTE OF CHEMISTRY

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Diphenylhexatriene is employed to sense the changes elicited in dipalmitoylphosphatidylcholine large unilamellar vesicles by the incorporation of several alkanols. From the dependence of the observed anisotropy values upon the surfactant concentration, pseudo partition constants of alkanols are obtained under conditions in which the vesicles are intermediate between the gel and liquid crystalline states. These data, together with previous data obtained at lower alkanol concentrations, allow an evaluation of the dependence of the alkanol incorporation on the solute concentration. The effect of the solute topology is investigated by employing linear and highly branched alkanols.

Original language	English
Pages (from-to)	287-293
Number of pages	7
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	108
Issue number	2-3
DOIs	https://doi.org/10.1016/0927-7757(95)03424-2
State	Published - 20 Mar 1996

Keywords

DPPC vesicles
alkanols
gel
phase transition
solute topology

Access to Document

10.1016/0927-7757(95)03424-2

Cite this

@article{c2ff081262da456f8f28575ab64eaa2c,

title = "Main phase transition depression by incorporation of alkanols in DPPC vesicles in the gel state: Influence of the solute topology",

abstract = "Diphenylhexatriene is employed to sense the changes elicited in dipalmitoylphosphatidylcholine large unilamellar vesicles by the incorporation of several alkanols. From the dependence of the observed anisotropy values upon the surfactant concentration, pseudo partition constants of alkanols are obtained under conditions in which the vesicles are intermediate between the gel and liquid crystalline states. These data, together with previous data obtained at lower alkanol concentrations, allow an evaluation of the dependence of the alkanol incorporation on the solute concentration. The effect of the solute topology is investigated by employing linear and highly branched alkanols.",

keywords = "DPPC vesicles, alkanols, gel, phase transition, solute topology",

author = "Aguilar, {L. F.} and Sotomayor, {C. P.} and Lissi, {E. A.}",

note = "Funding Information: This work was supported by FONDECYT (Project 1941058), Fundacidn Andes (Project C-12302), DICYT-USACH and DGIP-UCV.",

year = "1996",

month = mar,

day = "20",

doi = "10.1016/0927-7757(95)03424-2",

language = "English",

volume = "108",

pages = "287--293",

journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",

issn = "0927-7757",

publisher = "Elsevier",

number = "2-3",

}

TY - JOUR

T1 - Main phase transition depression by incorporation of alkanols in DPPC vesicles in the gel state

T2 - Influence of the solute topology

AU - Aguilar, L. F.

AU - Sotomayor, C. P.

AU - Lissi, E. A.

N1 - Funding Information: This work was supported by FONDECYT (Project 1941058), Fundacidn Andes (Project C-12302), DICYT-USACH and DGIP-UCV.

PY - 1996/3/20

Y1 - 1996/3/20

N2 - Diphenylhexatriene is employed to sense the changes elicited in dipalmitoylphosphatidylcholine large unilamellar vesicles by the incorporation of several alkanols. From the dependence of the observed anisotropy values upon the surfactant concentration, pseudo partition constants of alkanols are obtained under conditions in which the vesicles are intermediate between the gel and liquid crystalline states. These data, together with previous data obtained at lower alkanol concentrations, allow an evaluation of the dependence of the alkanol incorporation on the solute concentration. The effect of the solute topology is investigated by employing linear and highly branched alkanols.

AB - Diphenylhexatriene is employed to sense the changes elicited in dipalmitoylphosphatidylcholine large unilamellar vesicles by the incorporation of several alkanols. From the dependence of the observed anisotropy values upon the surfactant concentration, pseudo partition constants of alkanols are obtained under conditions in which the vesicles are intermediate between the gel and liquid crystalline states. These data, together with previous data obtained at lower alkanol concentrations, allow an evaluation of the dependence of the alkanol incorporation on the solute concentration. The effect of the solute topology is investigated by employing linear and highly branched alkanols.

KW - DPPC vesicles

KW - alkanols

KW - gel

KW - phase transition

KW - solute topology

UR - http://www.scopus.com/inward/record.url?scp=0029869414&partnerID=8YFLogxK

U2 - 10.1016/0927-7757(95)03424-2

DO - 10.1016/0927-7757(95)03424-2

M3 - Article

AN - SCOPUS:0029869414

SN - 0927-7757

VL - 108

SP - 287

EP - 293

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

IS - 2-3

ER -

Main phase transition depression by incorporation of alkanols in DPPC vesicles in the gel state: Influence of the solute topology

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this