Tailoring Graphite into Subnanometer Graphene,Advanced Materials

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Tailoring Graphite into Subnanometer Graphene
Advanced Materials ( IF 27.4 ) Pub Date : 2023-12-13 , DOI: 10.1002/adma.202310022
Zhexue Chen _{1,

2} , Yutong Zhang _{2,

3} , Ce Zhao _{1,

2} , Yuexing Xia _{2,

3} , Zhangqiang Li _{1,

2} , Xuanping Zhou _{1,

2} , Liuyang Xiao _{1,

2} , Xinfeng Liu _{2,

3} , Yong Zhang _{1,

2}

Affiliation

Within the intersection of materials science and nanoscience/technology, extremely downsized (including quantum-sized and subnanometer-sized) materials attract increasing interest. However, the effective and controllable production of extremely downsized materials through physical strategies remains a great challenge. Herein, an all-physical top–down method for the production of sub-1 nm graphene with completely broken lattice is reported. The graphene subnanometer materials (GSNs) with monolayer structures and lateral sizes of ≈0.5 nm are obtained. Compared with their bulk, nanosheets, and quantum sheets, the intrinsic GSNs present extremely enhanced photoluminescence and nonlinear saturation absorption performances, as well as unique carrier behavior. The non-equilibrium states induced by the entirely exposed and broken, intrinsic lattices in sub-1 nm graphene can be determinative to their extreme performances. This work shows the great potential of broken lattice and provides new insights toward subnanometer materials.

中文翻译：

将石墨定制为亚纳米石墨烯

在材料科学和纳米科学/技术的交叉领域，尺寸极小（包括量子尺寸和亚纳米尺寸）的材料引起了越来越多的兴趣。然而，通过物理策略有效、可控地生产尺寸极小的材料仍然是一个巨大的挑战。在此，报道了一种用于生产晶格完全破碎的亚1纳米石墨烯的全物理自上而下的方法。获得了单层结构、横向尺寸约0.5 nm的石墨烯亚纳米材料（GSN）。与块体、纳米片和量子片相比，本征GSN呈现出极其增强的光致发光和非线性饱和吸收性能以及独特的载流子行为。亚 1 nm 石墨烯中完全暴露和破碎的本征晶格引起的非平衡态可能决定其极端性能。这项工作展示了破碎晶格的巨大潜力，并为亚纳米材料提供了新的见解。

更新日期：2023-12-13

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