Neutron scattering from magnetically aligned biomimetic substrates

T. Gutberlet; A. Hoell; M. Kammel; J. Frank; J. Katsaras

doi:10.1007/s003390201693

Neutron scattering from magnetically aligned biomimetic substrates

T. Gutberlet, A. Hoell, M. Kammel, J. Frank, J. Katsaras

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5 Scopus citations

Abstract

Binary mixtures of long-chain and short-chain phospholipids or bile-salt analogues can form disk-shaped bilayered micelles (diameter 10-100nm, thickness 4-6 nm) which have been shown to orient themselves in a magnetic field, serving as a self-orienting biomimetic substrate. Within the magnetic field the bicellar system doped with lanthanide ions is highly alignable (< 1.0°C mosaic spread FWHM) and shows a temperature- and concentration-dependent nematic-to-smectic phase transition. The structural and thermodynamic changes during this phase transition at different hydration levels were investigated by small-angle neutron scattering and differential scanning calorimetry. While the neutron-scattering data indicate a singular phase transition, the calorimetric measurements show a rather complex phase behavior of the system between 283 and 303 K.

Original language	English
Pages (from-to)	S1260-S1261
Journal	Applied Physics A: Materials Science and Processing
Volume	74
Issue number	SUPPL.II
DOIs	https://doi.org/10.1007/s003390201693
State	Published - Dec 2002
Externally published	Yes

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title = "Neutron scattering from magnetically aligned biomimetic substrates",

abstract = "Binary mixtures of long-chain and short-chain phospholipids or bile-salt analogues can form disk-shaped bilayered micelles (diameter 10-100nm, thickness 4-6 nm) which have been shown to orient themselves in a magnetic field, serving as a self-orienting biomimetic substrate. Within the magnetic field the bicellar system doped with lanthanide ions is highly alignable (< 1.0°C mosaic spread FWHM) and shows a temperature- and concentration-dependent nematic-to-smectic phase transition. The structural and thermodynamic changes during this phase transition at different hydration levels were investigated by small-angle neutron scattering and differential scanning calorimetry. While the neutron-scattering data indicate a singular phase transition, the calorimetric measurements show a rather complex phase behavior of the system between 283 and 303 K.",

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T1 - Neutron scattering from magnetically aligned biomimetic substrates

AU - Gutberlet, T.

AU - Hoell, A.

AU - Kammel, M.

AU - Frank, J.

AU - Katsaras, J.

PY - 2002/12

Y1 - 2002/12

N2 - Binary mixtures of long-chain and short-chain phospholipids or bile-salt analogues can form disk-shaped bilayered micelles (diameter 10-100nm, thickness 4-6 nm) which have been shown to orient themselves in a magnetic field, serving as a self-orienting biomimetic substrate. Within the magnetic field the bicellar system doped with lanthanide ions is highly alignable (< 1.0°C mosaic spread FWHM) and shows a temperature- and concentration-dependent nematic-to-smectic phase transition. The structural and thermodynamic changes during this phase transition at different hydration levels were investigated by small-angle neutron scattering and differential scanning calorimetry. While the neutron-scattering data indicate a singular phase transition, the calorimetric measurements show a rather complex phase behavior of the system between 283 and 303 K.

AB - Binary mixtures of long-chain and short-chain phospholipids or bile-salt analogues can form disk-shaped bilayered micelles (diameter 10-100nm, thickness 4-6 nm) which have been shown to orient themselves in a magnetic field, serving as a self-orienting biomimetic substrate. Within the magnetic field the bicellar system doped with lanthanide ions is highly alignable (< 1.0°C mosaic spread FWHM) and shows a temperature- and concentration-dependent nematic-to-smectic phase transition. The structural and thermodynamic changes during this phase transition at different hydration levels were investigated by small-angle neutron scattering and differential scanning calorimetry. While the neutron-scattering data indicate a singular phase transition, the calorimetric measurements show a rather complex phase behavior of the system between 283 and 303 K.

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Neutron scattering from magnetically aligned biomimetic substrates

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