Crystallographic Recognition Controls Peptide Binding for Bio-Based Nanomaterials

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• 作者：Ryan Coppage ; Joseph M. Slocik ; Beverly D. Briggs ; Anatoly I. Frenkel ; Hendrik Heinz ; Rajesh R. Naik ; Marc R. Knecht
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：August 17, 2011
• 年：2011
• 卷：133
• 期：32
• 页码：12346-12349
• 全文大小：769K
• 年卷期：v.133,no.32(August 17, 2011)
• ISSN：1520-5126

文摘

The ability to control the size, shape, composition, and activity of nanomaterials presents a formidable challenge. Peptide approaches represent new avenues to achieve such control at the synthetic level; however, the critical interactions at the bio/nano interface that direct such precision remain poorly understood. Here we present evidence to suggest that materials-directing peptides bind at specific time points during Pd nanoparticle (NP) growth, dictated by material crystallinity. As such surfaces are presented, rapid peptide binding occurs, resulting in the stabilization and size control of single-crystal NPs. Such specificity suggests that peptides could be engineered to direct the structure of nanomaterials at the atomic level, thus enhancing their activity.