期刊
ACS NANO
卷 3, 期 5, 页码 1288-1296出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn9002709
关键词
peptides; Pd nanoparticles; catalysis; Stille coupling; bioinspired nanotechnology
类别
资金
- American Chemical Society Petroleum Research Fund
- Air Force Office of Scientific Research
- University of Kentucky
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据