Metallated Graphynes as a New Class of Photofunctional 2D Organometallic Nanosheets

Linli Xu, Jibin Sun, Tianhong Tang, Hongyang Zhang, Mingzi Sun, Jianqi Zhang, Jiahua Li, Bolong Huang, Zhengping Wang, Zheng Xie, Wai Yeung Wong (Corresponding Author)

Research output: Journal article publicationJournal articleAcademic researchpeer-review

30 Citations (Scopus)


Two-dimensional (2D) nanomaterials are attracting much attention due to their excellent electronic and optical properties. Here, we report the first experimental preparation of two free-standing mercurated graphyne nanosheets via the interface-assisted bottom-up method, which integrates both the advantages of metal center and graphyne. The continuous large-area nanosheets derived from the chemical growth show the layered molecular structural arrangement, controllable thickness and enhanced π-conjugation, which result in their stable and outstanding broadband nonlinear saturable absorption (SA) properties (at both 532 and 1064 nm). The passively Q-switched (PQS) performances of these two nanosheets as the saturable absorbers are comparable to or higher than those of the state-of-the-art 2D nanomaterials (such as graphene, black phosphorus, MoS2, γ-graphyne, etc.). Our results illustrate that the two metallated graphynes could act not only as a new class of 2D carbon-rich materials, but also as inexpensive and easily available optoelectronic materials for device fabrication.

Original languageEnglish
Pages (from-to)11326-11334
Number of pages9
JournalAngewandte Chemie - International Edition
Issue number20
Publication statusPublished - 10 May 2021


  • metallated graphynes
  • nanosheets
  • optical properties
  • passively Q-switched laser
  • saturable absorption

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)


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