In situ formation of metal nanoparticle composites via "soft" plasma electrochemical reduction of metallosupramolecular polymer films

Seung Whan Lee, Justin R. Kumpfer, Pin Ann Lin, Guodong Li, Xuan P A Gao, Stuart J. Rowan, R. Mohan Sankaran

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Metallosupramolecular polymers, consisting of both inorganic and organic phases, offer an interesting platform for the in situ formation of metal nanoparticles embedded in a polymer film. Here, we report the synthesis and characterization of Pt-containing supramolecular polymers, prepared from 4-oxy-2,6-bis(10-methylbenzimidazolyl)pyridine end-capped polymers of either poly(tetrahydrofuran) or poly(ethylene-co-butylene), where the OMeBip:Pt complex phase separates from the macromonomer soft core to yield mechanically robust films. Exposure of these Pt-containing supramolecular polymer films to an atmospheric-pressure plasma setup results in the controlled nucleation and growth of uniformly sized, crystalline, unagglomerated Pt nanoparticles. The mechanism for nanoparticle nucleation is believed to be reduction by plasma electrons, eliminating the need for hydrogen gas or other reactive chemicals and allowing "soft" processing. We show that the size and density of the nanoparticles is modulated by the exposure time, molecular weight of the polymer core, and polarity of the polymer core, thus enabling metal nanoparticle composites to be produced in a single step.

Original languageEnglish
Pages (from-to)8201-8210
Number of pages10
JournalMacromolecules
Volume45
Issue number20
DOIs
Publication statusPublished - 2012 Oct 23
Externally publishedYes

Fingerprint

Metal nanoparticles
Polymer films
Polymers
Plasmas
Composite materials
Nanoparticles
Nucleation
Pyridine
Atmospheric pressure
Hydrogen
Ethylene
Gases
Molecular weight
Crystalline materials
Electrons
Processing

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry

Cite this

Lee, S. W., Kumpfer, J. R., Lin, P. A., Li, G., Gao, X. P. A., Rowan, S. J., & Sankaran, R. M. (2012). In situ formation of metal nanoparticle composites via "soft" plasma electrochemical reduction of metallosupramolecular polymer films. Macromolecules, 45(20), 8201-8210. https://doi.org/10.1021/ma301640d

In situ formation of metal nanoparticle composites via "soft" plasma electrochemical reduction of metallosupramolecular polymer films. / Lee, Seung Whan; Kumpfer, Justin R.; Lin, Pin Ann; Li, Guodong; Gao, Xuan P A; Rowan, Stuart J.; Sankaran, R. Mohan.

In: Macromolecules, Vol. 45, No. 20, 23.10.2012, p. 8201-8210.

Research output: Contribution to journalArticle

Lee, Seung Whan ; Kumpfer, Justin R. ; Lin, Pin Ann ; Li, Guodong ; Gao, Xuan P A ; Rowan, Stuart J. ; Sankaran, R. Mohan. / In situ formation of metal nanoparticle composites via "soft" plasma electrochemical reduction of metallosupramolecular polymer films. In: Macromolecules. 2012 ; Vol. 45, No. 20. pp. 8201-8210.
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