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Published on: August 12, 2013
Electron conductive three-dimensional polymer of cuboidal C60
Shoji Yamanaka1, Akira Kubo, Kei Inumaru
1Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
Physical Review Letters
|April 12, 2006
Summary
Researchers synthesized three-dimensional (3D) C60 polymers from 2D C60 polymers. This novel 3D C60 polymer exhibits electron conductivity, unlike its 2D precursor.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Polymer Science
Background:
- Two-dimensional (2D) C60 polymers have been investigated for their unique structural and electronic properties.
- Understanding the transformation pathways of C60 polymers under extreme conditions is crucial for designing novel materials.
Purpose of the Study:
- To synthesize single crystals of three-dimensional (3D) C60 polymer.
- To characterize the crystal structure and bonding of the 3D C60 polymer.
- To investigate the electronic properties of the 3D C60 polymer and compare them to its 2D counterpart.
Main Methods:
- Topotactic conversion of 2D C60 polymer single crystals.
- High-pressure synthesis at 15 GPa and 600 degrees C.
- X-ray single crystal diffraction analysis.
Main Results:
- Successful synthesis of 3D C60 polymer single crystals.
- Crystallization in a body-centered orthorhombic space group (Immm).
- Significant deformation of spherical C60 monomers into cuboidal shapes, bonded to eight neighbors via [3 + 3] cycloaddition.
- The 3D C60 polymer demonstrated electron conductivity, contrasting with the nonconductive 2D polymer.
Conclusions:
- A novel 3D C60 polymer with a unique cuboidal structure has been synthesized.
- The transformation from 2D to 3D C60 polymer induces electron conductivity.
- This study opens avenues for developing new conductive carbon-based materials.
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