Carbon nanotubes from enhanced direct injection pyrolytic synthesis as templates for long linear carbon chain formation

Author(s)

Lei Shi, Philip Rohringer, Paola Ayala, Takeshi Saito, Thomas Pichler

Abstract

Carbon nanotubes (CNTs) can be used as nanoreactors due to their unique

hollow nanostructures. In order to prepare linear carbon chains inside

CNTs, eDIPS single-wall carbon nanotubes were annealed at high

temperatures from 1300 to 1500 in vacuum conditions. A Raman mode including three components between 1820 and 1880 cm⁻¹

were observed in eDIPS carbon nanotube sample encapsulating linear

carbon chains. In addition, the intensity of the peaks corresponding to

the radial breathing mode of small diameter tubes became visible and

increased significantly after annealing, because thin inner tubes are

also formed inside the original tubes during the annealing process,

which are served as templates. This hints that the linear carbon chains

are actually synthesized inside the new inner CNTs with reduced

diameter. This study has important implications to understand the growth

and identification of linear carbon chains inside the CNTs.

Organisation(s)

Electronic Properties of Materials

External organisation(s)

National Institute of Advanced Industrial Science and Technology (AIST)

Journal

Physica Status Solidi. B: Basic Research

Volume

250

Pages

2611-2615

No. of pages

ISSN

0370-1972

DOI

https://doi.org/10.1002/pssb.201300148

Publication date

12-2013

Peer reviewed

Yes

Austrian Fields of Science 2012

103020 Surface physics, 103009 Solid state physics, 103018 Materials physics

Keywords

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