A few-layer covalent network of fullerenes

Meirzadeh, Elena; Evans, Austin M.; Rezaee, Mehdi; Milich, Milena; Dionne, Connor Jaymes; Darlington, Thomas; Bao, Si Tong; Bartholomew, Amymarie K.; Handa, Taketo; Rizzo, Daniel J.; Wiscons, Ren A.; Reza, Mahniz; Zangiabadi, Amirali; Fardian‐Melamed, Natalie; Crowther, Andrew C.; Schuck, P. James; Basov, D. N.; Zhu, Xiaoyang; Giri, Ashutosh; Hopkins, Patrick E.; Kim, Philip; Steigerwald, Michael L.; Yang, Jingjing; Nuckolls, Colin; Roy, Xavier

doi:10.1038/s41586-022-05401-w

Cited by 114 publications

(103 citation statements)

References 53 publications

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“…These observations point to the possibility of strategically designing the optoelectronic materials by appropriately choosing the constituent clusters and bridging elements. Similarly, we recently reported a covalent-bonding-induced evolution in the optical transition nature and corresponding brightening of excitons in a fullerene-based superatomic 2D solid …”

Section: Discussionsupporting

confidence: 62%

“…Similarly, we recently reported a covalent-bonding-induced evolution in the optical transition nature and corresponding brightening of excitons in a fullerene-based superatomic 2D solid. 44 While the covalent bonds in CsRe 6 Se 8 I 3 induce a significant change in the electronic structure, especially around the VBM, we consider that the excitation is still relatively localized near each cluster. The optical spectra in Figure 1c show a relatively large luminescence Stokes shift of 180 meV for the direct exciton at room temperature.…”

Section: ■ Discussionmentioning

confidence: 92%

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Anisotropically Fused Clusters Form a 2D Superatomic Sheet Exhibiting Polarized Light Emission

et al. 2023

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Polarized light emission is desirable for a number of optoelectronic applications and is difficult to realize in conventional semiconductors. Here we take advantage of the tunability in structure, symmetry, and functionality of superatomic semiconductors, i.e., crystalline arrays of atomically precise polyatomic clusters. We report the in-plane anisotropy in electronic and optical properties in the van der Waals two-dimensional (2D) superatomic semiconductor CsRe 6 Se 8 I 3 . Consistent with structural anisotropy within the 2D plane, CsRe 6 Se 8 I 3 shows linearly polarized photoluminescence (PL) emission at room temperature. By lowering the temperature, we observe a new PL peak with nearly orthogonal linear polarization without an accompanying structural phase transition. Theoretical calculations together with spectroscopic measurements suggest that the high-and low-temperature PL peaks originate, respectively, from direct and indirect excitons. These results demonstrate rich optical properties of superatomic solids, which may be precisely programmed with the hierarchical design of the constituent clusters and the intercluster bonding.

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Section: Discussionsupporting

confidence: 62%

Section: ■ Discussionmentioning

confidence: 92%

Anisotropically Fused Clusters Form a 2D Superatomic Sheet Exhibiting Polarized Light Emission

et al. 2023

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“…29 This work laid a foundation for the study of 2D fullerene periodic cluster materials. Very recently, a few-layer covalent network of fullerenes 30 and long-range ordered porous carbons produced from C 60 31 were also experimentally reported. The properties of 2D materials can be affected by their thickness, which can allow an opportunity for efficiently manipulating the properties of 2D materials.…”

Section: Introductionmentioning

confidence: 99%

Superior thermoelectric properties of bulk and monolayer fullerene networks

Yng

Sun

2023

J. Mater. Chem. A

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“…Since the rst discovery of fullerenes 1 , carbon nanotubes (CNTs) 2,3 , and graphene 4 , the family of sp 2 carbon allotropes have been broadly explored and investigated which exhibit unusual chemical and physical properties 5 . Some recent studies have enriched this family to seek new polymeric carbon forms, such as fullerene networks 6,7 . In contrast, carbyne, an sphybridized carbon allotrope with an in nite one-dimensional (1D) carbon chain, has attracted more interest back in the 1960s, but its structure remained controversial over decades 8,9 .…”

Section: Introductionmentioning

confidence: 99%

On-surface synthesis of a polyynic carbon chain with ~40 alkyne units

Gao

Kang

Sun

et al. 2023

Preprint

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Carbyne, an elusive sp-hybridized linear carbon allotrope, has fascinated chemists and physicists for decades. Due to its high chemical reactivity and extreme instability, carbyne was much less explored in contrast to the sp2-hybridized carbon allotropes such as graphene. Herein, we report the on-surface synthesis of a polyynic carbon chain with ~40 alkyne units (80 carbon atoms), exhibiting the longest polyyne synthesized and characterized to date as a model for carbyne. The polyynic structure of carbon chains with alternating triple and single bonds is unambiguously revealed by bond-resolved atomic force microscopy, and the decoupled polyynic carbon chain exhibits a band gap of 3.67 eV measured by scanning tunneling spectroscopy. Our results provide a feasible route for the synthesis of long and stable polyynic carbon chains, leading a way to the final preparation of carbyne.

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A few-layer covalent network of fullerenes

Cited by 114 publications

References 53 publications

Anisotropically Fused Clusters Form a 2D Superatomic Sheet Exhibiting Polarized Light Emission

Anisotropically Fused Clusters Form a 2D Superatomic Sheet Exhibiting Polarized Light Emission

Superior thermoelectric properties of bulk and monolayer fullerene networks

On-surface synthesis of a polyynic carbon chain with ~40 alkyne units

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