Abstract
Metallic nanoparticles are deposited on multilayers of an unsaturated phospholipid to form a planar nano-composite material. At temperatures near or above the main transition of the lipid, the organic layers exhibit a high degree of mobility and allow for a significant rearrangement of the metallic particles. Originally after deposition, the inter-particle distances correspond to the average bilayer thickness of the given phospholipid. After annealing of the composite structure in the presence of moisture, the spacing between the particles is significantly reduced, associated with an interdigitation of aliphatic chains in the hydrophobic region. This phenomenon is still observed after UV irradiation of the unsaturated hydrocarbon chains.
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