Bending and radial deformation of lipid tubules on self-assembled thiol monolayers

    Authors

    Y. Zhao; N. Mahajan;J. Y. Fang

    Comments

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    Abbreviated Journal Title

    J. Phys. Chem. B

    Keywords

    FORCE MICROSCOPY; DRUG-DELIVERY; NANOTUBES; DNA; MICROSTRUCTURES; ARCHITECTURES; FABRICATION; TRANSITION; NANOFIBERS; TEMPLATES; Chemistry, Physical

    Abstract

    Lipid tubules represent a hollow, cylindrical supramolecular structure formed by rolled-up lipid bilayers. We find that the lipid tubules of 1,2-bis(tricosa-10,12-diynoyl)-sn-glycero-3-phosphocholine can be bent into a loopike shape by the shrinking contact line of droplets on self-assembled monolayers (SAMs) of 1-dodecanethiol. The persistence length of individual lipid tubules is estimated to be similar to 41 mu m. The radial deformation of the lipid tubules on SAMs is studied under applied load using atomic force microscope. The stiffness of the tubules in the radial direction is found to increase when the number of the lipid bilayers in the tubule wall increases.

    Journal Title

    Journal of Physical Chemistry B

    Volume

    110

    Issue/Number

    44

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    22060

    Last Page

    22063

    WOS Identifier

    WOS:000241729300003

    ISSN

    1520-6106

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