TY  - JOUR
AU  - Dubnichkova, M.
AU  - Yaradaykin, S.
AU  - Lacko, I.
AU  - Devinsky, F.
AU  - Gordeliy, I. L.
AU  - Balgovy, P.
TI  - Effects of germini surfactants on egg phosphatidylcholine bilayers in the fluid lamellar phase
JO  - Colloids and surfaces / B
VL  - 34
SN  - 0927-7765
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - PreJuSER-40334
SP  - 161 - 164
PY  - 2004
N1  - Record converted from VDB: 12.11.2012
AB  - The influence of 1,4-butanediamonium-N,N'-dialkyl-N,N,N',N'-tetramethyl dibromides (CmA, m = 7-16 is the number of alkyl carbons) on the egg yolk phosphatidylcholine (EYPC) bilayer thickness and lipid surface area at the bilayer-aqueous phase interface is studied using X-ray diffraction on fluid lamellar CmA + EYPC + H2O phases as a function of CmA:EYPC and H2O:EYPC molar ratios and the alkyl chain length m. At the constant CmA:EYPC = 0.4 and H2O:EYPC = 18 molar ratios, the CmA induced bilayer thickness decrease shows a minimum and the lipid surface area increase a maximum at the alkyl chain length m = 9. The obtained results are discussed in the context of a structural perturbation model of the cut-off effect in biological potencies of surfactants which occurs when increasing the alkyl substituent chain length above the critical value.
KW  - Egg Yolk: metabolism
KW  - Lipid Bilayers: chemistry
KW  - Lipids: chemistry
KW  - Liposomes: chemistry
KW  - Models, Chemical
KW  - Models, Statistical
KW  - Phosphatidylcholines: chemistry
KW  - Scattering, Radiation
KW  - X-Ray Diffraction
KW  - Lipid Bilayers (NLM Chemicals)
KW  - Lipids (NLM Chemicals)
KW  - Liposomes (NLM Chemicals)
KW  - Phosphatidylcholines (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:15261069
UR  - <Go to ISI:>//WOS:000220691000003
DO  - DOI:10.1016/j.colsurfb.2003.12.009
UR  - https://juser.fz-juelich.de/record/40334
ER  -