Abstract
Here we report on the biomimetic synthesis of Pd nanoparticles for use as models of green catalytic systems. The nanomaterials are synthesized using peptides isolated via phage-display techniques that are specific to Pd surfaces. Using this synthetic strategy, peptide-functionalized Pd nanoparticles of 1.9-0.3 nm in diameter are produced, which are soluble and stable in aqueous solutions. Once characterized, these biobased materials were then used as catalysts to drive the formation of C-C bonds using the Stille coupling reaction. Under the conditions of an aqueous solvent at room temperature, quantitative product yields were achieved within 24.0 h employing catalyst loadings of>0.005 mol % of Pd. Additionally, high TOF values of 3207-269 mol product . (mol Pd . h) -1 have been determined for these materials. The catalytic reactivity was then examined over a set of substrates with substitutions for both functional group and halide substituents, demonstrating that the peptide-based Pd nanoparticles are reactive toward a variety of functionalities. Taken together, these bioinspired materials represent unique model systems for catalytic studies to elucidate ecologically friendly reactive species and conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 1288-1296 |
| Number of pages | 9 |
| Journal | ACS Nano |
| Volume | 3 |
| Issue number | 5 |
| DOIs | |
| State | Published - May 26 2009 |
| Externally published | Yes |
Fingerprint
Keywords
- Bioinspired nanotechnology
- Catalysis
- Pd nanoparticles
- Peptides
- Stille coupling
ASJC Scopus subject areas
- Engineering(all)
- Materials Science(all)
- Physics and Astronomy(all)
Cite this
Biomimetic synthesis of pd nanocatalysts for the stille coupling reaction. / Pacardo, Dennis B.; Sethi, Manish; Jones, Sharon E.; Naik, Rajesh R.; Knecht, Marc.
In: ACS Nano, Vol. 3, No. 5, 26.05.2009, p. 1288-1296.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Biomimetic synthesis of pd nanocatalysts for the stille coupling reaction
AU - Pacardo, Dennis B.
AU - Sethi, Manish
AU - Jones, Sharon E.
AU - Naik, Rajesh R.
AU - Knecht, Marc
PY - 2009/5/26
Y1 - 2009/5/26
N2 - Here we report on the biomimetic synthesis of Pd nanoparticles for use as models of green catalytic systems. The nanomaterials are synthesized using peptides isolated via phage-display techniques that are specific to Pd surfaces. Using this synthetic strategy, peptide-functionalized Pd nanoparticles of 1.9-0.3 nm in diameter are produced, which are soluble and stable in aqueous solutions. Once characterized, these biobased materials were then used as catalysts to drive the formation of C-C bonds using the Stille coupling reaction. Under the conditions of an aqueous solvent at room temperature, quantitative product yields were achieved within 24.0 h employing catalyst loadings of>0.005 mol % of Pd. Additionally, high TOF values of 3207-269 mol product . (mol Pd . h) -1 have been determined for these materials. The catalytic reactivity was then examined over a set of substrates with substitutions for both functional group and halide substituents, demonstrating that the peptide-based Pd nanoparticles are reactive toward a variety of functionalities. Taken together, these bioinspired materials represent unique model systems for catalytic studies to elucidate ecologically friendly reactive species and conditions.
AB - Here we report on the biomimetic synthesis of Pd nanoparticles for use as models of green catalytic systems. The nanomaterials are synthesized using peptides isolated via phage-display techniques that are specific to Pd surfaces. Using this synthetic strategy, peptide-functionalized Pd nanoparticles of 1.9-0.3 nm in diameter are produced, which are soluble and stable in aqueous solutions. Once characterized, these biobased materials were then used as catalysts to drive the formation of C-C bonds using the Stille coupling reaction. Under the conditions of an aqueous solvent at room temperature, quantitative product yields were achieved within 24.0 h employing catalyst loadings of>0.005 mol % of Pd. Additionally, high TOF values of 3207-269 mol product . (mol Pd . h) -1 have been determined for these materials. The catalytic reactivity was then examined over a set of substrates with substitutions for both functional group and halide substituents, demonstrating that the peptide-based Pd nanoparticles are reactive toward a variety of functionalities. Taken together, these bioinspired materials represent unique model systems for catalytic studies to elucidate ecologically friendly reactive species and conditions.
KW - Bioinspired nanotechnology
KW - Catalysis
KW - Pd nanoparticles
KW - Peptides
KW - Stille coupling
UR - http://www.scopus.com/inward/record.url?scp=66949152074&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=66949152074&partnerID=8YFLogxK
U2 - 10.1021/nn9002709
DO - 10.1021/nn9002709
M3 - Article
C2 - 19422199
AN - SCOPUS:66949152074
VL - 3
SP - 1288
EP - 1296
JO - ACS Nano
JF - ACS Nano
SN - 1936-0851
IS - 5
ER -