Importance of Aromatic Content for Peptide/Single-Walled Carbon Nanotube Interactions
- 12 August 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 127 (35) , 12323-12328
Abstract
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 π-stacking interactions play an important role in peptide dispersion of SWNTs.Keywords
This publication has 13 references indexed in Scilit:
- Hierarchical Self‐Assembly of Peptide‐Coated Carbon NanotubesAdvanced Functional Materials, 2004
- Structure and Function of Enzymes Adsorbed onto Single-Walled Carbon NanotubesLangmuir, 2004
- Preparation and Characterization of Individual Peptide-Wrapped Single-Walled Carbon NanotubesJournal of the American Chemical Society, 2004
- Structure-Based Carbon Nanotube Sorting by Sequence-Dependent DNA AssemblyScience, 2003
- DNA-assisted dispersion and separation of carbon nanotubesNature Materials, 2003
- Controlled Assembly of Carbon Nanotubes by Designed Amphiphilic Peptide HelicesJournal of the American Chemical Society, 2003
- Carbon Nanotubes--the Route Toward ApplicationsScience, 2002
- Band Gap Fluorescence from Individual Single-Walled Carbon NanotubesScience, 2002
- X-ray crystal structure of an anti-Buckminsterfullerene antibody Fab fragment: Biomolecular recognition of C 60Proceedings of the National Academy of Sciences, 2000
- Gas-phase catalytic growth of single-walled carbon nanotubes from carbon monoxideChemical Physics Letters, 1999