Dispersion of Carbon Nanotubes in Water by Noncovalent Wrapping with Peptides Screened by Phage Display

作者：Ejima Hirotaka; Matsumiya Kisei; Yui Hiroharu; Serizawa Takeshi^*

来源：Chemistry Letters, 2011, 40(8): 880-882.

DOI：10.1246/cl.2011.880

12-mer peptides, which were originally identified by affinity screening for carbon nanotubes (CNTs) and poly(phenylenevinylene) (PPV) from phage-displayed peptide libraries, were used as dispersants for single-walled CNTs (SWNTs). The amounts dispersed were then compared under the same experimental conditions. Among the various peptides, Mps01 (HNAYWHWPPSMT) showed the highest dispersion capability. Gly scanning revealed that the Trp and Pro residues were crucial for dispersion. Atomic force microscopy (AFM) confirmed that the majority of dispersed SWNTs were debundled and isolated via Mps01 wrapping. AFM height analysis also suggested that the majority of SWNTs were covered by a monolayer of Mps01.

• 出版日期2011-8-5