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

Saito, Kenji and Troiani, Vincent and Qiu, Hongjin and Solladie, Nathalie and Sakata, Takao and Mori, Hirotaro and Ohama, Mitsuo and Fukuzumi, Shunichi (2007) Nondestructive formation of supramolecular nanohybrids of single-walled carbon nanotubes with flexible porphyrinic polypeptides. JOURNAL OF PHYSICAL CHEMISTRY C, 111 (3). pp. 1194-1199.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp065615i

Abstract

Strategies for single-walled 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 peptidic backbone in P(H2P)16 and π−π 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.

Item Type:Article
Subjects:Physical Science > Nano objects
Material Science > Nanochemistry
ID Code:3160
Deposited By:Anuj Seth
Deposited On:26 May 2009 14:39
Last Modified:26 May 2009 14:39

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