Nondestructive formation of supramolecular nanohybrids of single-walled carbon nanotubes with flexible porphyrinic polypeptides

作者：Saito Kenji; Troiani Vincent; Qiu Hongjin; Solladie Nathalie^*; Sakata Takao; Mori Hirotaro; Ohama Mitsuo; Fukuzumi Shunichi

来源：Journal of Physical Chemistry C, 2007, 111(3): 1194-1199.

DOI：10.1021/jp065615i

Strategies for single-waited carbon nanotube (SWNT) separation are critical to developing nanotubes as useful nanoscale building blocks. Herein, diameter-selective dispersion of HiPco single-walled carbon nanotubes has been accomplished through noncovalent complexation of the nondestructive nanotubes with a flexible porphyrinic polypeptide bearing 16 porphyrin units [P(H2P)(16)] in DMF at 298 K. Supramolecular formation occurs through wrapping of peptidie backbone in P(H-2)P)(16) and pi-pi interaction between porphyrins and nanotubes to extract the large-diameter nanotubes (ca. 1.3 nm) as revealed by ultraviolet-visible-near-infrared and Raman spectroscopy as well as high-resolution transmission electron micropscopy. The photoexcitation of the supramolecular complex affords the long-lived charge-separated state.

• 出版日期2007-1-25