title: Optical properties of self-organized gold nanorod-polymer hybrid films.
abstract: High fractions of gold nanorods were locally aligned by means of a polymeric liquid crystalline phase. The gold nanorods constituting >80 wt % of the thin organic-inorganic composite films form a network with side-by-side and end-to-end combinations. Organization into these network structures was induced by shearing gold nanorod-LC polymer dispersions via spin-coating. The LC polymer is a polyoxazoline functionalized with pendent cholesteryl and carboxyl side groups enabling the polymer to bind to the CTAB stabilizer layer of the gold nanorods via electrostatic interactions, thus forming the glue between organic and inorganic components, and to form a chiral nematic lyotropic phase. The self-assembled locally oriented gold nanorod structuring enables control over collective optical properties due to plasmon resonance coupling, reminiscent of enhanced optical properties of natural biomaterials.
authors.affiliation: Physical Chemistry, University of Konstanz , Universitätsstraße 10, D-78457 Konstanz, Germany.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Tritschler
authors.forename: Igor
authors.initials: I
authors.lastname: Zlotnikov
authors.forename: Philipp
authors.initials: P
authors.lastname: Keckeis
authors.forename: Helmut
authors.initials: H
authors.lastname: Schlaad
authors.forename: Helmut
authors.initials: H
authors.lastname: Cölfen
mesh_terms: D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D008567:Membranes, Artificial; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D013056:Spectrophotometry, Ultraviolet; D055672:Static Electricity
chemical_list: D002593:Cetrimonium Compounds; D008567:Membranes, Artificial; D006046:Gold; D000077286:Cetrimonium