Peptide-Directed Synthesis and Assembly of Hollow Spherical CoPt Nanoparticle Superstructures


  • The authors are grateful for financial support from the National Science Foundation (DMR-0954380, NLR) and the Air Force Office of Scientific Research (FA9550-11-1-0275, NLR). This work was also partially supported by the US Department of Energy (Grant No. ER46430). The authors thank the Peterson NFCF and the MEMS Department for provision of access to TEM. The authors also thank Tao Li for assisting with XRD measurements and Prof. David Waldeck for thoughtful discussions and comments on the manuscript.


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From “nano” to “super”: Peptide conjugates that consist of cobalt-binding peptides terminated with tails of biphenyl units were used to direct the synthesis and assembly of hollow spherical superstructures of CoPt nanoparticles (see picture). These magnetically separable superstructures exhibit electrocatalytic activity for methanol oxidation.