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SAXS Study of Influence of Gemini Surfactant, 1,1'-(1,4-butanediyl)bis 3-cyclododecyloxymethylimidazolium di-chloride, on the Fully Hydrated DMPC

100%

Pietralik Z., Taube M., Skrzypczak A., Kozak M.

Acta Physica Polonica A

2010

vol. 117

issue 2

311-314

The study has been performed on model systems of biological membranes obtained on the basis of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) and cationic gemini surfactant - derivative of 1,1'-(1,4-butane)bis 3-alkylo-xyme-thyli-mida-zolium chlorides with cyclic chains. The small angle X-ray scattering SAXS results implied a gradual disappearance (as a function of surfactant concentration) of the lamellar phase typical of DMPC and formation of unilamellar phase - probably a bicellar phase.

Surfactant Effect on Synthesis of Nanocrystalline La_xSr_{1-x}MnO_3 by Hydrothermal Method

100%

Sin W., Wong K., Li P.

Acta Physica Polonica A

2007

vol. 111

issue 1

165-171

Crystalline La_xSr_{1-x}MnO_3 was prepared by a hydrothermal route in the presence of surfactant. The cationic surfactant of cetyltrimethylammonium bromide as a template is used to regulate the nucleation and crystal growth. The as-synthesized product was characterized by X-ray diffraction and transmission electron microscopy. Nanosized and uniform rod-like monocrystals of La_xSr_{1-x}MnO_3 were obtained. Their magnetic properties were studied using a vibrating sample magnetometer. Our results reveal that the use of surfactant helps to lower the processing temperature and to speed up the formation and crystallization of La_xSr_{1-x}MnO_3. The surfactant also provides us an additional means of controlling the nanocrystalline size and maintaining the stoichiometry of the as-prepared nanocrystallites.

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2 Acta Physica Polonica A

1 2010

1 2007

1 Kozak M.

1 Li P.

1 Pietralik Z.

1 Sin W.

1 Skrzypczak A.

1 Taube M.

1 Wong K.

Search results

SAXS Study of Influence of Gemini Surfactant, 1,1'-(1,4-butanediyl)bis 3-cyclododecyloxymethylimidazolium di-chloride, on the Fully Hydrated DMPC

Surfactant Effect on Synthesis of Nanocrystalline La_xSr_{1-x}MnO_3 by Hydrothermal Method