Coronene Encapsulation in Single‐Walled Carbon Nanotubes: Stacked Columns,Peapods, and Nanoribbons |
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| Authors: | Dr. Ilya V. Anoshkin Dr. Alexandr V. Talyzin Prof. Albert G. Nasibulin Dr. Arkady V. Krasheninnikov Hua Jiang Prof. Risto M. Nieminen Prof. Esko I. Kauppinen |
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| Affiliation: | 1. NanoMaterials Group, Department of Applied Physics, Aalto University, P.O. Box 15100, 00076 Aalto, Espoo (Finland)These authors contributed equally to this work;2. Ume? University, Department of Physics, 90187 Ume? (Sweden)These authors contributed equally to this work;3. NanoMaterials Group, Department of Applied Physics, Aalto University, P.O. Box 15100, 00076 Aalto, Espoo (Finland);4. Skolkovo Institute of Science and Technology, 100 Novaya st., Skolkovo, 143025 (Russia);5. Department of Applied Physics, Aalto University, P.O. Box 1100, 00076 Aalto (Finland);6. Aalto University School of Science, P.O. Box 1100, 00076 Aalto (Finland) |
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| Abstract: | Encapsulation of coronene inside single‐walled carbon nanotubes (SWNTs) was studied under various conditions. Under high vacuum, two main types of molecular encapsulation were observed by using transmission electron microscopy: coronene dimers and molecular stacking columns perpendicular or tilted (45–60°) with regard to the axis of the SWNTs. A relatively small number of short nanoribbons or polymerized coronene molecular chains were observed. However, experiments performed under an argon atmosphere (0.17 MPa) revealed reactions between the coronene molecules and the formation of hydrogen‐terminated graphene nanoribbons. It was also observed that the morphology of the encapsulated products depend on the diameter of the SWNTs. The experimental results are explained by using density functional theory calculations through the energies of the coronene molecules inside the SWNTs, which depend on the orientation of the molecules and the diameter of the tubes. |
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| Keywords: | coronene encapsulation graphene nanoribbons nanotubes |
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