Nonplanar Nanographenes Based on Tribenzotriquinacene or Fenestrindane Core

Ng, Chun-Fai; Wong, Wai-Shing; Ip, Ho-Wang; Lau, Wing-Wa; Sun, Xiao-Qing; Tse, H. L. A.; He, Lin; Cheung, Enoch; Kuck, Dietmar; Chow, Hak‐Fun

doi:10.6023/cjoc202005083

Cited by 4 publications

(1 citation statement)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the design of TQ-graphene is based on the TQ skeleton, it remains challenging to prepare TQ-graphene from TQ molecules. Fortunately, significant progress has been made in recent years in synthesizing carbon-based 2D networks that incorporate a TQ scaffold. − We anticipate that these findings of TQ-graphene make it a promising candidate anode material for SIBs and await experimental confirmation.…”

Section: Discussionmentioning

confidence: 99%

Theoretical Prediction of Janus TQ-Graphene as a Metallic Two-Dimensional Carbon Allotrope with Negative Poisson’s Ratios for High Capacity Sodium-Ion Batteries

Zheng

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Carbonaceous materials are considered the most promising anode materials for sodium-ion batteries (SIBs) due to their abundant active sites, high electronic conductivity, and good mechanical stability. However, two typical types of carbon materials, graphite and graphene, are unsuitable for Na storage arising from π-electron delocalization. The introduction of Janus structure in graphene can disrupt the extended sp 2 conjugated network and thus enhance the surface reactivity. Herein, inspired by the dissymmetric structural characteristics of triquinacene, we construct a metallic two-dimensional Janus carbon allotrope, termed TQ-graphene. After confirming its dynamical, thermal, and mechanical stability, we find that TQ-graphene is an auxetic material with large in-plane negative Poisson’s ratios. Furthermore, it exhibits excellent performance as an anode material for SIBs with an extremely high capacity of 2436 mA h g–1, a small diffusion barrier (0.01∼0.34 eV), and a low average voltage (0.32 V).

show abstract

Section: Discussionmentioning

confidence: 99%

Theoretical Prediction of Janus TQ-Graphene as a Metallic Two-Dimensional Carbon Allotrope with Negative Poisson’s Ratios for High Capacity Sodium-Ion Batteries

Zheng

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

Carbocyclic Spiro Compounds Occupying Higher Dimensions

Chow

Kuck

2022

Spiro Compounds

View full text Add to dashboard Cite

Donor‐Acceptor Tribenzotriquinacene‐Based Molecular Wizard Hats Bearing Three ortho‐Benzoquinone Units

Hung

Kuck

Chow

2023

Chemistry A European J

Self Cite

View full text Add to dashboard Cite

Two π-extended bay-bridged tribenzotriquinacenes ("TBTQ wizard hats") 12 and 16 bearing three mutually conjugated, alternating veratrole-type and ortho-benzoquinone units were synthesized. The electronic properties of these complementarily arranged, nonplanar push-pull systems are affected by the fusion with the rigid, C 3 -symmetric TBTQ core to a different extent, as revealed by X-ray structural analysis, UV-vis spectroscopy and cyclovoltammetry. The combination of three quinone units within the original TBTQ core and three veratrole-type bay bridging units in 12 gives rise to a more efficiently π-conjugated chromophore, as reflected by the shallower shape of wizard hat and its absorption in the visible up to 750 nm in comparison to 16. Congener 12 contains an aromatic 18-π electron system in contrast to the cross-conjugated analog 16. X-ray structure analysis of the precursor dodecaether 15 revealed the formation of a cage-like supramolecular dimer, in which the peripheral dioxane-type ether groups interlace by twelve noncovalent CÀ H•••••O bonds.

show abstract

Nonplanar Nanographenes Based on Tribenzotriquinacene or Fenestrindane Core

Cited by 4 publications

References 45 publications

Theoretical Prediction of Janus TQ-Graphene as a Metallic Two-Dimensional Carbon Allotrope with Negative Poisson’s Ratios for High Capacity Sodium-Ion Batteries

Theoretical Prediction of Janus TQ-Graphene as a Metallic Two-Dimensional Carbon Allotrope with Negative Poisson’s Ratios for High Capacity Sodium-Ion Batteries

Carbocyclic Spiro Compounds Occupying Higher Dimensions

Donor‐Acceptor Tribenzotriquinacene‐Based Molecular Wizard Hats Bearing Three ortho‐Benzoquinone Units

Contact Info

Product

Resources

About