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 language | English |
|---|---|
| Pages (from-to) | 481-488 |
| Number of pages | 8 |
| Journal | Langmuir |
| Volume | 17 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 23 2001 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Synthesis, characterization, reactivity, and electrochemistry of palladium monolayer protected clusters
AU - Zamborini, Francis P.
AU - Gross, Stephen
AU - Murray, Royce W.
PY - 2001/1/23
Y1 - 2001/1/23
N2 - 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.
AB - 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.
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U2 - 10.1021/la0010525
DO - 10.1021/la0010525
M3 - Article
AN - SCOPUS:0035132371
VL - 17
SP - 481
EP - 488
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 2
ER -