ArticleScience and technology of advanced materials2026
On-surface synthesis of nonbenzenoid nanographenes through skeletal rearrangement reactions on Au(111).
Article in Science and technology of advanced materials, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Skeletal rearrangement reaction is a class of important chemical reactions to synthesize various constitutional isomers from a given precursor molecule. This approach allows the synthesis of diverse nanographenes incorporating five- and seven-membered rings, thereby tuning their chemical and physical properties. Here, we present formation of five types of closed-shell and two types of open-shell nanographenes on Au(111) via carbon rearrangements of 7-(2,6-dimethylphenyl)-12-[10-(2,6-dimethylphenyl)anthracen-9-yl]tetraphene. The structural, electronic, and magnetic properties of various products composed of pentagonal or pentagonal/heptagonal rings were in-detail investigated with a combination of bond-resolved scanning tunneling microscopy/scanning tunneling spectroscopy at 4.3 K and density functional theory calculations. We found that both zigzag edges and fused pentagonal rings significantly affect the band gap and the spin polarization. This discovery could facilitate the on-surface synthesis of intriguing carbon nanostructures through skeletal rearrangement.
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