Scaffold for metal-containing nanostructures: from zero to two dimensions

2020-02-15 01:21:00

containing Gold graphite domains microscopy

责任者: van Manen, H.-J.;Paraschiv, V.;Garcia-Lopez, J.J.;Schonherr, H.;Zapotoczny, S.;Vancso, G.J.;Crego-Calama, M.;Reinhoudt, D.N. 单位: Lab. of Supramolecular Chem. & Technol., Twente Univ., Enschede, Netherlands 来源出处: Nano Letters(Nano Lett. (USA)),2004/03/,4(3):441-6 摘要: We report on the synthesis and characterization of metal-containing multicomponent, hydrogen-bonded rosette assemblies and their ordered arrangement on graphite surfaces. The introduction of gold atoms into the architecture of double rosettes was achieved using the coordination of phosphane groups to Au(I)CI moieties. Transmission electron microscopy studies on gold-functionalized double rosettes deposited from dilute solution onto amorphous graphite revealed isolated features with a diameter of 1.0-1.2 nm, assigned to individual double rosettes. Highly ordered 2-D nanorod domains with an inter-row spacing of 5.1 ± 0.1 nm were obtained by deposition of the gold-labeled double rosettes on highly oriented pyrolytic graphite, as demonstrated by atomic force microscopy (AFM) experiments. Two sets of domains with different mutual orientations were resolved in high-resolution images, indicating the resolution of the racemic rosette mixture into enantiomerically pure domains on the substrate. Our strategy for the formation of metal-containing nanorod arrays, involving well-defined surface-immobilized self-assembled systems as scaffolds, will contribute to the development of templated functional nanoarchitectures via bottom-up approaches 关键词: atomic force microscopy;gold;hydrogen bonds;isomerism;materials preparation;nanostructured materials;nanotechnology;self-assembly;transmission electron microscopy;hydrogen-bonded scaffold assemblies;metal-containing nanostructures;metal-containing multicomponent assemblies;hydrogen-bonded rosette assemblies;ordered arrangement;graphite surfaces;phosphane groups;transmission electron microscopy;gold-functionalized double rosettes;highly ordered 2-D nanorod domains;inter-row spacing;highly oriented pyrolytic graphite;atomic force microscopy;AFM;mutual orientation;high-resolution images;racemic rosette mixture;enantiomerically pure domains;nanorod arrays;surface-immobilized self-assembled systems;templated functional nanoarchitecture;bottom-up approach;5 to 5.2 nm;Au-C