Synthesis of nanoparticle/ligand composite thin films by sequential ligand self assembly and surface complex reduction

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• 作者：Falk Muench ; ^{muench@ca.tu-darmstadt.de} ; Anne Fuchs ; Eric Mankel ; Markus Rauber ; Stefan Lauterbach ; Hans-Joachim Kleebe ; Wolfgang Ensinger
• 关键词：Layer-by-layer deposition ; SILAR ; Nanocomposites ; Self assembly ; Templates ; 1D nanomaterials
• 刊名：Journal of Colloid and Interface Science
• 出版年：2013
• 出版时间：1 January, 2013
• 年：2013
• 卷：389
• 期：1
• 页码：23-30
• 全文大小：1646 K

文摘

Nanocomposite thin films consisting of ligand-connected metal nanoparticles were deposited by iteration of ligand assembly, surface complex formation and reduction. This novel and convenient approach combines characteristics of the layer-by-layer (LbL) and the successive ion layer adsorption and reaction (SILAR) techniques. In contrast to classical LbL assembly, the nanoparticle formation is performed in situ, avoiding separate reduction, protection and attachment steps. To demonstrate the versatility of the approach, different metal precursors (Pd, Ag and Au salts) and linkers (1,2-ethanedithiol, 1,4-benzenedithiol and polythiol) were applied. The formation of dithiol-linked nanoparticle films was confirmed by TEM and XPS. By combining the deposition protocol with ion track etched polycarbonate templates, nanotubes and nanowires with high aspect ratios of up to 300 could be fabricated.