4.7 Article

Hexahapto-lanthanide interconnects between the conjugated surfaces of single-walled carbon nanotubes

Journal

DALTON TRANSACTIONS
Volume 43, Issue 20, Pages 7379-7382

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c3dt53291g

Keywords

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Funding

  1. NSF [DMR-1305724]
  2. Defense Microelectronics Activity (DMEA) [H94003-10-2-1003]
  3. U.S. Department of Education GAANN [P200A120170]

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We report the response of the electrical conductivity of semiconducting single-walled carbon nanotube (SWNT) thin films on exposure to metal vapors of the early lanthanides under high vacuum conditions. We attribute the strongly enhanced conductivities observed on deposition of samarium and europium to charge transfer from the metals to the SWNT backbone, thereby leading to the first examples of mixed covalent-ionic bis-hexahapto bonds [(eta(6)-SWNT) M(eta(6)-SWNT), where M = Sm, Eu].

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