Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/3016
Title: Tubular Hybrids: A Nanoparticle—Molecular Network
Authors: Priyadarshi, R
Sreejith, S
Popovitz-Biro, R
Cohen, S R
Pinkas, I
Tenne, R
Lahav, M
Van Der Boom, M V
Issue Date: 20-Feb-2018
Publisher: American Chemical Society
Citation: Langmuir, 34(7):2464-2470
Abstract: We report here a new methodology for the formation of freestanding nanotubes composed of individual gold nanoparticles (NPs) cross-linked by coordination complexes or porphyrin molecules using WS2 nanotubes (INT-WS2) as a template. Our method consists of three steps: (i) coverage of these robust inorganic materials with monodispersed and dense monolayers of gold NPs, (ii) formation of a molecular AuNP network by exposing these decorated tubes to solutions containing a ruthenium polypyridyl complex or meso-tetra(4-pyridyl)porphyrin, and (iii) removal of the INT-WS2 template with a hydrogen peroxide solution. Nanoindentation of the template-free AuNP tubes with atomic force microscopy indicates a radial elastic modulus of 4 GPa. The template-free molecular AuNP tubes are characterized using scanning and transmission electron microscopy, energy-dispersive X-ray spectroscopy, and micro-Raman spectroscopy. The methodology provides a convenient and scalable strategy for the realization of molecular AuNP tubes with a defined length and diameter, depending on the dimensions of the template.
Appears in Collections:2018

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