Synthesis, characterization, reactivity, and electrochemistry of palladium monolayer protected clusters

Francis P. Zamborini, Stephen Gross, Royce W. Murray

Research output: Contribution to journalArticle

151 Citations (Scopus)

Abstract

This paper describes the synthesis, characterization, reactivity, and electrochemistry of monolayer-protected clusters (MPCs) of palladium that are passivated by monolayers of hexanethiolate or dodecanethiolate ligands. The synthetic product is sensitive to the thiol:Pd ratio used in the reaction mixture: a 1:1 ratio or smaller ratio produces metallic Pd(0) clusters that are similar to analogously prepared Au MPCs, but much more ligand-rich, whereas ≥2:1 ratios yield a very different material that is either extremely small Pd(0) clusters or a form of Pd(II) alkanethiolate complex. The monolayers of the metallic Pd(0) MPCs that are synthesized using small thiol:Pd ratios can be modified by ligand place-exchange and coupling reactions. The electrochemistry of the Pd core and of electroactive labels attached to the alkanethiolate ligands was studied. Quantized double-layer core charging is seen but less clearly than with Au MPCs. The Pd nanoparticles were examined using NMR, FTIR, UV - vis, TEM, TGA, and elemental analysis.

Original languageEnglish
Pages (from-to)481-488
Number of pages8
JournalLangmuir
Volume17
Issue number2
DOIs
StatePublished - Jan 23 2001
Externally publishedYes

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Palladium
Electrochemistry
electrochemistry
palladium
Monolayers
reactivity
synthesis
Ligands
ligands
Sulfhydryl Compounds
thiols
charging
Labels
Nuclear magnetic resonance
Nanoparticles
Transmission electron microscopy
nanoparticles
nuclear magnetic resonance
transmission electron microscopy
products

All Science Journal Classification (ASJC) codes

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Synthesis, characterization, reactivity, and electrochemistry of palladium monolayer protected clusters. / Zamborini, Francis P.; Gross, Stephen; Murray, Royce W.

In: Langmuir, Vol. 17, No. 2, 23.01.2001, p. 481-488.

Research output: Contribution to journalArticle

Zamborini, Francis P. ; Gross, Stephen ; Murray, Royce W. / Synthesis, characterization, reactivity, and electrochemistry of palladium monolayer protected clusters. In: Langmuir. 2001 ; Vol. 17, No. 2. pp. 481-488.
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