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

Kenji Saito; Vincent Troiani; Hongjin Qiu; Nathalie Solladié; Takao Sakata; Hirotaro Mori; Mitsuo Ohama; Shunichi Fukuzumi

doi:10.1021/jp065615i

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

Department of Chemistry & Nanoscience

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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(H ₂P)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.

Original language	English
Pages (from-to)	1194-1199
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	111
Issue number	3
DOIs	https://doi.org/10.1021/jp065615i
State	Published - 25 Jan 2007

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title = "Nondestructive formation of supramolecular nanohybrids of single-walled carbon nanotubes with flexible porphyrinic polypeptides",

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(H 2P)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.",

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AU - Saito, Kenji

AU - Troiani, Vincent

AU - Qiu, Hongjin

AU - Solladié, Nathalie

AU - Sakata, Takao

AU - Mori, Hirotaro

AU - Ohama, Mitsuo

AU - Fukuzumi, Shunichi

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Y1 - 2007/1/25

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AB - 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(H 2P)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.

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

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