Multicomponent and composite architectures promise to synergistically combine properties of their constituent materials. One attractive class of these materials is the combination of plasmonically active nanoparticles with catalytic or magnetic materials. However, the architectures of these secondary components can be difficult to control, and is often either templated by the underlying structure (e.g. core-shell or �framed� nanoparticle colloids) or by an external template (e.g. porous anodized aluminum oxide). Here, we demonstrate the use of nanoparticle surface chemistry to create linear arrangements of discrete, 1D Pt nanoparticle alloys directly on the surface of a thin triangular gold nanoprism substrate. The synthesis of both components is accomplished in the solution phase and leverages several aspects of the growth chemistry including the supramolecular assembly of the surfactant and speciation of the platinum precursor. The reaction is followed by electron microscopy techniques, as well as X-ray photoelectron spectroscopy, inductively coupled plasma mass spectrometry, and 195Pt-NMR.

Solution phase strategies for VLS-like growth on colloidal plasmonic substrates

247th National Meeting (2014)

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