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Noncovalent porphyrin-functionalized single-walled carbon nanotubes in solution and the formation of porphyrin–nanotube nanocomposites

✍ Scribed by Hiroto Murakami; Takuro Nomura; Naotoshi Nakashima

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
285 KB
Volume
378
Category
Article
ISSN
0009-2614

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✦ Synopsis

Porphyrins are functional dyes with a variety of unique physical (photophysical), chemical and biological properties. We report on the first finding that porphyrin molecules dissolve single-walled carbon nanotubes (SWNTs) in organic solutions and that the SWNTs-porphyrin hybrid nanomaterials can be separated from the solutions. Atomic force microscope investigation revealed that both individually dissolved nanotubes and bundled nanotubes coexisted in the solution. The solid purified SWNTs (p-SWNTs)-porphyrin nanomaterials were readily separated from the p-SWNTsporphyrin solution, and this nanomaterial was re-dissolvable in DMF. Measurements of its fluorescence spectrum gave evidence for the interaction between the nanotube sidewall and porphyrin molecules in solution.

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Molecular dynamics in the formation process of single-walled carbon nanotubes
✍ Yasushi Shibuta; Shigeo Maruyama 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 916 KB

## Abstract The mechanism of the nucleation and formation of single‐walled carbon nanotubes (SWNTs) was investigated using molecular dynamics simulations. When the initial state was chosen so that carbon and nickel atoms were randomly distributed in a simulation domain, the formation of a random ca