Coalescence of carbon nanotubes while preserving the chiral angles
Abstract Atomically precise coalescence of graphitic nanocarbon molecules is one of the most challenging reactions in sp 2 carbon chemistry. Here, we demonstrate that two carbon nanotubes with the same chiral indices (n, m) are efficiently coalesced into a single (2n, 2 m) nanotube with preserved ch...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-02-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56389-6 |
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| _version_ | 1823861856560742400 |
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| author | Akira Takakura Taishi Nishihara Koji Harano Ovidiu Cretu Takeshi Tanaka Hiromichi Kataura Yuhei Miyauchi |
| author_facet | Akira Takakura Taishi Nishihara Koji Harano Ovidiu Cretu Takeshi Tanaka Hiromichi Kataura Yuhei Miyauchi |
| author_sort | Akira Takakura |
| collection | DOAJ |
| description | Abstract Atomically precise coalescence of graphitic nanocarbon molecules is one of the most challenging reactions in sp 2 carbon chemistry. Here, we demonstrate that two carbon nanotubes with the same chiral indices (n, m) are efficiently coalesced into a single (2n, 2 m) nanotube with preserved chiral angles via heat treatment at less than 1000 °C. The (2n, 2 m) nanotubes constitute up to ≈ 20%–40% of the final sample in the most efficient case. Additional optical absorption peaks of the (2n, 2 m) nanotubes emerge, indicating that the reaction occurs over the entire sample. The reaction efficiency strongly depends on the chiral angle, implying that C–C bond cleavage and recombination occurs sequentially. Furthermore, the reaction occurs efficiently even at 600 °C in an atmosphere containing trace amounts of oxygen. These findings offer routes for the structure-selective synthesis of large-diameter nanotubes and modification of the properties of nanotube assemblies via postprocessing. |
| format | Article |
| id | doaj-art-fac2fc8537b549679b9bdaeb8abbdae8 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-fac2fc8537b549679b9bdaeb8abbdae82025-02-09T12:44:32ZengNature PortfolioNature Communications2041-17232025-02-011611910.1038/s41467-025-56389-6Coalescence of carbon nanotubes while preserving the chiral anglesAkira Takakura0Taishi Nishihara1Koji Harano2Ovidiu Cretu3Takeshi Tanaka4Hiromichi Kataura5Yuhei Miyauchi6Institute of Advanced Energy, Kyoto UniversityInstitute of Advanced Energy, Kyoto UniversityCenter for Basic Research on Materials, National Institute for Materials ScienceCenter for Basic Research on Materials, National Institute for Materials ScienceNanomaterials Research Institute, AISTNanomaterials Research Institute, AISTInstitute of Advanced Energy, Kyoto UniversityAbstract Atomically precise coalescence of graphitic nanocarbon molecules is one of the most challenging reactions in sp 2 carbon chemistry. Here, we demonstrate that two carbon nanotubes with the same chiral indices (n, m) are efficiently coalesced into a single (2n, 2 m) nanotube with preserved chiral angles via heat treatment at less than 1000 °C. The (2n, 2 m) nanotubes constitute up to ≈ 20%–40% of the final sample in the most efficient case. Additional optical absorption peaks of the (2n, 2 m) nanotubes emerge, indicating that the reaction occurs over the entire sample. The reaction efficiency strongly depends on the chiral angle, implying that C–C bond cleavage and recombination occurs sequentially. Furthermore, the reaction occurs efficiently even at 600 °C in an atmosphere containing trace amounts of oxygen. These findings offer routes for the structure-selective synthesis of large-diameter nanotubes and modification of the properties of nanotube assemblies via postprocessing.https://doi.org/10.1038/s41467-025-56389-6 |
| spellingShingle | Akira Takakura Taishi Nishihara Koji Harano Ovidiu Cretu Takeshi Tanaka Hiromichi Kataura Yuhei Miyauchi Coalescence of carbon nanotubes while preserving the chiral angles Nature Communications |
| title | Coalescence of carbon nanotubes while preserving the chiral angles |
| title_full | Coalescence of carbon nanotubes while preserving the chiral angles |
| title_fullStr | Coalescence of carbon nanotubes while preserving the chiral angles |
| title_full_unstemmed | Coalescence of carbon nanotubes while preserving the chiral angles |
| title_short | Coalescence of carbon nanotubes while preserving the chiral angles |
| title_sort | coalescence of carbon nanotubes while preserving the chiral angles |
| url | https://doi.org/10.1038/s41467-025-56389-6 |
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