alexa Self-assembly of gold nanorods induced by intermolecular interactions of surface-anchored lipids.
Materials Science

Materials Science

Journal of Nanomedicine & Nanotechnology

Author(s): Nakashima H, Furukawa K, Kashimura Y, Torimitsu K

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Abstract Surface-modified gold nanorods (Au NRs) with 1,2-dipalmitoyl- sn-glycero-3-phosphothioethanol (DPPTE) were synthesized, and their self-assembled structures on a silicon substrate were observed using a scanning electron microscope (SEM). The Au NR-DPPTE complex formed characteristic one- and two-dimensional self-assemblies induced by intermolecular interactions of surface-anchored lipids via simple drying process. The interparticle distance between neighboring NRs was uniform at around 5.0 nm, which was consistent with the thickness of the lipid bilayer. Furthermore, we observed the anisotropic configurations of the NR complex, preferentially oriented in a lateral or perpendicular fashion, in a two-dimensional assembled structure dependent on the interfacial hydrophilicity or hydrophobicity of the silicon surface. This article was published in Langmuir and referenced in Journal of Nanomedicine & Nanotechnology

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