Structure and energy spectra of a two-dimensional dielectric carbon allotrope

Tyutyulkov, N.; Dietz, F.; Müllen, Kläus; Baumgarten, Martin

doi:10.1016/s0009-2614(97)00465-x

Cited by 27 publications

(30 citation statements)

References 21 publications

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“…S17. The rapid decrease of the measured gaps (from 2.35 to 0 eV) of biphenylene sheets with increasing sizes provides strong evidence that this material has metallic character, rather than being dielectric with a gap of 2 eV, as was reported in a previous theoretical study (21). [32] on Au(111) and ref.…”

supporting

confidence: 80%

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Biphenylene Sheet: A Nonbenzenoid Carbon Allotrope

Fan¹,

Yan²,

Tripp³

et al. 2020

Preprint

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The quest for planar sp2-hybridized carbon allotropes other than graphene, such as graphenylene and biphenylene sheet, has stimulated substantial research efforts because of the materials' predicted unique mechanical, electronic and transport properties. However, their synthesis remains challenging due to the lack of reliable protocols for generating non-hexagonal rings during the in-plane tiling of carbon atoms. Here, we report the bottom-up growth of ultra-flat biphenylene sheet with periodically arranged four-, six-, and eight-membered rings of sp2 carbon atoms, via an unprecedented on-surface inter-polymer hydrogen fluoride (HF)-zipping reaction. The characterization of this biphenylene sheet by scanning probe methods solves the long-standing controversy over its dielectric or metallic nature. We expect the inter-polymer HF-zipping method to complement the toolbox for the synthesis of other nonbenzenoid carbon allotropes.

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supporting

confidence: 80%

“…This heavily hampered the study of the properties of planar nonbenzenoid carbon allotropes. For instance, the successful synthesis and characterization of a biphenylene polymer chains cannot serve to clarify the theoretical debate on whether biphenylene sheet is dielectric (21) or metallic (22).…”

mentioning

confidence: 99%

Biphenylene Sheet: A Nonbenzenoid Carbon Allotrope

Fan¹,

Yan²,

Tripp³

et al. 2020

Preprint

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“…Just very recently, Qitang Fan et al successfully synthesized, for the first time, a biphenylene network (BPN) [8], a nonbenzenoid carbon allotrope based on biphenylene (Figure 1c). The detailed morphology and electronic properties were characterized, showing that BPN has metallic electronic properties, clarifying the theoretical debate about the dielectric or metallic properties of BPN [2,9,10].…”

mentioning

confidence: 74%

Spectroscopic Evidence of New Low-Dimensional Planar Carbon Allotropes Based on Biphenylene via On-Surface Ullmann Coupling

et al. 2021

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“…For instance, the successful synthesis and characterization of a biphenylene polymer chains cannot serve to clarify the theoretical debate on whether biphenylene network is dielectric (21) or metallic (22,23).…”

Section: Main Textmentioning

confidence: 99%

Biphenylene network: A nonbenzenoid carbon allotrope

Fan

Yan

Tripp

et al. 2021

Science

483

390

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The quest for planar sp2-hybridized carbon allotropes other than graphene, such as graphenylene and biphenylene networks, has stimulated substantial research efforts because of the materials’ predicted mechanical, electronic, and transport properties. However, their syntheses remain challenging given the lack of reliable protocols for generating nonhexagonal rings during the in-plane tiling of carbon atoms. We report the bottom-up growth of an ultraflat biphenylene network with periodically arranged four-, six-, and eight-membered rings of sp2-hybridized carbon atoms through an on-surface interpolymer dehydrofluorination (HF-zipping) reaction. The characterization of this biphenylene network by scanning probe methods reveals that it is metallic rather than a dielectric. We expect the interpolymer HF-zipping method to complement the toolbox for the synthesis of other nonbenzenoid carbon allotropes.

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Structure and energy spectra of a two-dimensional dielectric carbon allotrope

Cited by 27 publications

References 21 publications

Biphenylene Sheet: A Nonbenzenoid Carbon Allotrope

Biphenylene Sheet: A Nonbenzenoid Carbon Allotrope

Spectroscopic Evidence of New Low-Dimensional Planar Carbon Allotropes Based on Biphenylene via On-Surface Ullmann Coupling

Biphenylene network: A nonbenzenoid carbon allotrope

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