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Biphenylene network: A nonbenzenoid carbon allotrope
Qitang Fan1, Linghao Yan2, Matthias W Tripp1
1Department of Chemistry, Philipps-Universität Marburg, 35032 Marburg, Germany.
Science (New York, N.Y.)
|May 21, 2021
Summary
Researchers synthesized a novel biphenylene network, a planar carbon allotrope, using a new dehydrofluorination method. This metallic material opens doors for creating other nonbenzenoid carbon structures.
Area of Science:
- Materials Science
- Chemistry
- Condensed Matter Physics
Background:
- Graphene and other planar sp2-hybridized carbon allotropes exhibit unique properties.
- Synthesizing novel carbon structures like graphenylene and biphenylene networks is challenging due to difficulties in forming nonhexagonal rings.
Purpose of the Study:
- To report the synthesis of an ultraflat biphenylene network with periodic four-, six-, and eight-membered rings.
- To characterize the electronic properties of the synthesized biphenylene network.
Main Methods:
- On-surface interpolymer dehydrofluorination (HF-zipping) reaction.
- Scanning probe microscopy for characterization.
Main Results:
- Successfully synthesized an ultraflat biphenylene network with periodically arranged four-, six-, and eight-membered rings.
- Characterization revealed the material is metallic, not dielectric.
Conclusions:
- The interpolymer HF-zipping method is effective for synthesizing biphenylene networks.
- This method can be extended for the synthesis of other nonbenzenoid carbon allotropes.
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