期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 127, 期 35, 页码 12323-12328出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja050747v
关键词
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We have previously demonstrated that a designed amphiphilic peptide helix, denoted nano-1, coats and debundles single-walled carbon nanotubes (SWNTs) and promotes the assembly of these coated SWNTs into novel hierarchical structures via peptide-peptide interactions. The purpose of this study is to better understand how aromatic content impacts interactions between peptides and SWNTs. We have designed a series of peptides, based on the nano-1 sequence, in which the aromatic content is systematically varied. Atomic force microscopy measurements and optical absorption spectroscopy reveal that the ability to disperse individual SWNTs increases with increasing aromatic residues in the peptide. Altogether, the results indicate that v-stacking interactions play an important role in peptide dispersion of SWNTs.
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