{
  "id": "2101.11596",
  "version": "v1",
  "published": "2021-01-27T18:41:31.000Z",
  "updated": "2021-01-27T18:41:31.000Z",
  "title": "Linearly controlled arrangement of $^{13}$C isotopes in single-wall carbon nanotubes",
  "authors": [
    "J. Koltai",
    "H. Kuzmany",
    "T. Pichler",
    "F. Simon"
  ],
  "journal": "Phys. Status Solidi B 254, 1700217 (2017)",
  "doi": "10.1002/pssb.201700217",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "The growth of single wall carbon nanotubes (SWCNT) inside host SWCNTs remains a compelling alternative to the conventional catalyst induced growth processes. It not only provides a catalyst free process but the ability to control the constituents of the inner tube if appropriate starting molecules are used. We report herein the growth of inner SWCNTs from $^{13}$C labeled toluene and natural carbon C$_{60}$. The latter molecule is essentially a stopper which acts to retain the smaller toluene. The Raman spectrum of the inner nanotubes is anomalous as it contains a highly isotope shifted \"tail\", which cannot be explained by assuming a homogeneous distribution of the isotopes. {\\color{black}Semi-empirical} calculations of the Raman modes indicate that this unsual effect is explicable if small clusters of $^{13}$C are assumed. This indicates the absence of carbon diffusion during the inner tube growth. When combined with appropriate molecular recognition, this may enable a molecular engineering of the atomic and isotope composition of the inner tubes.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-01-27T18:41:31.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "single-wall carbon nanotubes",
      "linearly controlled arrangement",
      "inner tube",
      "single wall carbon nanotubes",
      "conventional catalyst induced growth processes"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}