Filled Carbon Nanotubes: (X@CNTs)

Abstract

Whilst fullerene and related materials are the most inserted molecules in carbon nanotubes (CNTs), other molecular species including Zn-diphenylporphyrin (i.e. Zn-DPP) [1], orthocarborane [2,3], metallocenes [4,5], octasiloxane [6] and squarylium dye [7], among others have been encapsulated within either single-, double-or multiple walled carbon nanotubes (SWCNTs, DWCNTs and MWCNTs, respectively) and directly imaged by either high resolution transmission electron microscopy (HRTEM) or related techniques. In tandem with these studies, one-dimensional (1D) nanowires of a wide variety of materials including multiplets of polymeric iodine chains [8,9]

Isolation of Single-Wired Transition-Metal Monochalcogenides by Carbon Nanotubes

“…Here, we report the template-based synthesis of single-wired MoTe inside carbon nanotubes (CNTs). Chemically and thermally robust CNTs act as “nanotest tubes” for the synthesis of unusual nanomaterials, while the nanotube itself is not involved in the reactions. − The 1D confinement at the nanoscale instigates the self-assembly of MoTe nanowires (MoTeNWs) similar to other 1D materials such as ladder-like inorganic helixes, ultranarrow graphene nanoribbons, and atomic sp 1 -carbon chains (carbynes) . Furthermore, the sheaths of CNTs form few covalent bonds with inner products, instead providing a shield against oxidation.…”

Advances in tailoring the electronic properties of single-walled carbon nanotubes

“…As pointed out in Ref. [57] the contrast agents like gadolinium [427] or iron oxide [428] that are contained inside the SWCNTs will be less likely to interact with the surrounding tissue and being excreted from the organism more quickly. The contrast agents can be directly delivered to certain body tissues and provide molecular level contrast and biosensing [428].…”

“…The use of filled nanotubes for electrochemical energy storage and production was among the earliest suggested applications of filled nanotubes [57]. …”

“…Among all these approaches the filling of the SWCNT channels and transformation of encapsulated substances are the most promising methods for tailoring the nanotube electronic properties, because a number of different substances can be incorporated into the SWCNT inner cavities using appropriate filling methods [53][54][55][56][57].…”

HRTEM of 1DSnTe@SWNT nanocomposite located on thin layers of graphite

“…Filled single‐walled carbon nanotubes (SWNTs) are intensively explored field of research. The progress in this field is considered in a recent review by Sloan and Monthioux (2012). Electron microscopy of 1Dcrystal@SWNT is commonly accompanied by beam induced damage of the SWNT due to knock‐on effect (Zobelli et al ., 2008) and the one‐dimensional crystals due to effective heating or charging by an electron beam (Hutchison et al ., 2008).…”