Related Experiment Video
Updated: Jul 15, 2025
08:40
Preparation and Characterization of C60/Graphene Hybrid Nanostructures
Published on: May 15, 2018
9.6K
One-dimensional carbon chains encapsulated in hollandite.
1Department of Chemistry, Centre for Materials Science and Nanotechnology, University of Oslo, PO Box 1033, Blindern, N-0315, Oslo, Norway. jonathan.polfus@kjemi.uio.no.
Communications Chemistry
|October 3, 2023
Summary
Highly reactive one-dimensional carbon chains can be stabilized within metal oxide channels, like hollandite α-MnO2. This offers a more favorable interaction energy compared to carbon nanotubes for these novel carbon allotropes.
Area of Science:
- Materials Science
- Solid State Chemistry
- Nanotechnology
Background:
- One-dimensional carbon chains are reactive allotropes.
- Carbon nanotubes are currently used to stabilize these chains.
Purpose of the Study:
- To investigate the encapsulation of one-dimensional carbon chains in metal oxides.
- To compare the stability and interaction energy of carbon chains in metal oxides versus carbon nanotubes.
Main Methods:
- First-principles calculations were employed to determine interaction energies.
- Structural commensurability and steric repulsion were analyzed.
Main Results:
- Hollandite α-MnO2 channels were found to stabilize cumulene chains.
- Cumulene chains showed a more favorable interaction energy (0.065 eV/carbon) in α-MnO2 than in carbon nanotubes.
- Encapsulation induced channel expansion and charge density polarization in α-MnO2.
Conclusions:
- Metal oxides, specifically hollandite α-MnO2, provide a viable and favorable environment for stabilizing one-dimensional carbon chains.
- The interaction is governed by a balance of van der Waals attraction and steric repulsion.
- This finding opens new avenues for designing and utilizing novel carbon allotropes.
More Related Videos
Related Concept Videos
01:12Carbon Skeletons
107.8K
Life on Earth is carbon-based, as all macromolecules that make up living organisms contain carbon atoms. All organic compounds have a carbon backbone. Each carbon atom is tetravalent and can bond with four other atoms, making it an extraordinarily flexible component of biological molecules. Because carbon’s valence electrons are stable, it rarely becomes an ion. As the carbon chain increases in length, structural modifications such as ring structures, double bonds, and branching side...
107.8K
02:18Network Covalent Solids
13.5K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
13.5K
02:42Ionic Crystal Structures
14.4K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
14.4K
01:18Aromatic Hydrocarbon Cations: Structural Overview
2.8K
Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group...
Removing one hydrogen from the intervening CH2 group...
2.8K
01:17Ziegler–Natta Chain-Growth Polymerization: Overview
3.3K
Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
3.3K
01:18Aromatic Hydrocarbon Anions: Structural Overview
2.8K
Neutral hydrocarbons like cyclopentadiene with an odd number of carbon atoms and one intervening CH2 group in the ring are not aromatic. Cyclopentadiene with 4 π electrons does not satisfy the 4n + 2 π electron rule. Additionally, the intervening CH2 group is sp3 hybridized and lacks a vacant p orbital, thereby interrupting the overlap of p orbitals in a continuous manner and preventing the delocalization of π electrons throughout the ring.
Due to the absence of continuous...
Due to the absence of continuous...
2.8K