Investigation of hydrogenated HiPCo nanotubes by infrared spectroscopy
Two different reductive synthetic methods were applied to hydrogenate the sidewalls of HiPCo single‐walled carbon nanotubes (SWNTs). In the first one, the reductive agent was melted potassium which doped and exfoliated the nanotube bundles, so that before hydrogenation all of the tubes had been conv...
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| Veröffentlicht in: | Physica Status Solidi (b) 2010-12, Vol.247 (11-12), p.2855-2858 |
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| container_issue | 11-12 |
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| container_title | Physica Status Solidi (b) |
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| creator | Németh, Katalin Pekker, Áron Borondics, Ferenc Jakab, Emma Nemes, Norbert M. Kamarás, Katalin Pekker, Sándor |
| description | Two different reductive synthetic methods were applied to hydrogenate the sidewalls of HiPCo single‐walled carbon nanotubes (SWNTs). In the first one, the reductive agent was melted potassium which doped and exfoliated the nanotube bundles, so that before hydrogenation all of the tubes had been converted to metallic ones. In the second method, doping occurred just before hydrogenation by naphthalenide radical anions. The products were characterized by wide range infrared (30–52 000 cm−1) spectroscopy with special emphasis on the selectivity of the two methods. We found that in the first case the controlling factor is the bandgap, and in the second case the diameter. This difference suggests the importance of the π–π interaction between naphthalenide and the nanotube surface. |
| doi_str_mv | 10.1002/pssb.201000329 |
| format | Article |
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(b)</addtitle><description>Two different reductive synthetic methods were applied to hydrogenate the sidewalls of HiPCo single‐walled carbon nanotubes (SWNTs). In the first one, the reductive agent was melted potassium which doped and exfoliated the nanotube bundles, so that before hydrogenation all of the tubes had been converted to metallic ones. In the second method, doping occurred just before hydrogenation by naphthalenide radical anions. The products were characterized by wide range infrared (30–52 000 cm−1) spectroscopy with special emphasis on the selectivity of the two methods. We found that in the first case the controlling factor is the bandgap, and in the second case the diameter. 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(b)</addtitle><date>2010-12</date><risdate>2010</risdate><volume>247</volume><issue>11-12</issue><spage>2855</spage><epage>2858</epage><pages>2855-2858</pages><issn>0370-1972</issn><issn>1521-3951</issn><eissn>1521-3951</eissn><coden>PSSBBD</coden><abstract>Two different reductive synthetic methods were applied to hydrogenate the sidewalls of HiPCo single‐walled carbon nanotubes (SWNTs). In the first one, the reductive agent was melted potassium which doped and exfoliated the nanotube bundles, so that before hydrogenation all of the tubes had been converted to metallic ones. In the second method, doping occurred just before hydrogenation by naphthalenide radical anions. The products were characterized by wide range infrared (30–52 000 cm−1) spectroscopy with special emphasis on the selectivity of the two methods. We found that in the first case the controlling factor is the bandgap, and in the second case the diameter. 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| subjects | Bundles carbon nanotubes Catalytic methods Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science rheology diameter selectivity Exact sciences and technology Hydrogenation Infrared Infrared spectroscopy Materials science Methods of nanofabrication Nanoscale materials and structures: fabrication and characterization Nanotubes Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures Physics Radicals sidewall functionalization Single wall carbon nanotubes Tubes |
| title | Investigation of hydrogenated HiPCo nanotubes by infrared spectroscopy |
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