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Metallated Graphynes as a New Class of Photofunctional 2D Organometallic Nanosheets
Author(s) -
Xu Linli,
Sun Jibin,
Tang Tianhong,
Zhang Hongyang,
Sun Mingzi,
Zhang Jianqi,
Li Jiahua,
Huang Bolong,
Wang Zhengping,
Xie Zheng,
Wong WaiYeung
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202014835
Subject(s) - graphyne , graphene , nanomaterials , materials science , monolayer , black phosphorus , nanotechnology , carbon fibers , fabrication , optoelectronics , composite number , composite material , medicine , alternative medicine , pathology
Abstract 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, MoS 2 , 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.