Tubular Hybrids: A Nanoparticle - Molecular Network

Priyadarshi Ranjan, Sreejith Shankar, Ronit Popovitz-Biro, Sidney R. Cohen, Iddo Pinkas, Reshef Tenne, Michal Lahav, Milko van der Boom

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3 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)2464-2470
Number of pages7
JournalLangmuir
Volume34
Issue number7
DOIs
Publication statusPublished - Feb 20 2018

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Ranjan, P., Shankar, S., Popovitz-Biro, R., Cohen, S. R., Pinkas, I., Tenne, R., Lahav, M., & van der Boom, M. (2018). Tubular Hybrids: A Nanoparticle - Molecular Network. Langmuir, 34(7), 2464-2470. https://doi.org/10.1021/acs.langmuir.7b03125