Molecular bilayer graphene

Xin-Jing Zhao, Hao Hou, Xue-Ting Fan, Yu Wang, Yu-Min Liu, Chun Tang, Shun-He Liu, Peng-Peng Ding, Jun Cheng (), Dong-Hai Lin, Cheng Wang, Ye Yang and Yuan-Zhi Tan ()
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Xin-Jing Zhao: Xiamen University
Hao Hou: Xiamen University
Xue-Ting Fan: Xiamen University
Yu Wang: Xiamen University
Yu-Min Liu: Xiamen University
Chun Tang: Xiamen University
Shun-He Liu: Xiamen University
Peng-Peng Ding: Xiamen University
Jun Cheng: Xiamen University
Dong-Hai Lin: Xiamen University
Cheng Wang: Xiamen University
Ye Yang: Xiamen University
Yuan-Zhi Tan: Xiamen University

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract Bilayer graphene consists of two stacked graphene layers bound together by van der Waals interaction. As the molecular analog of bilayer graphene, molecular bilayer graphene (MBLG) can offer useful insights into the structural and functional properties of bilayer graphene. However, synthesis of MBLG, which requires discrete assembly of two graphene fragments, has proved to be challenging. Here, we show the synthesis and characterization of two structurally well-defined MBLGs, both consisting of two π−π stacked nanographene sheets. We find they have excellent stability against variation of concentration, temperature and solvents. The MBLGs show sharp absorption and emission peaks, and further time-resolved spectroscopic studies reveal drastically different lifetimes for the bright and dark Davydov states in these MBLGs.

Date: 2019
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DOI: 10.1038/s41467-019-11098-9

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