Rapid Synthesis of Graphdiyne Films on Hydrogel at the Superspreading Interface for Antibacteria

• Published in: ACS nano 2022-07, Vol.16 (7), p.11338-11345
• Main Authors: Kong, Ya, Li, Xiaodan, Wang, Longwei, Zhang, Zixuan, Feng, Xueting, Liu, Jing, Chen, Chunying, Tong, Lianming, Zhang, Jin
• Format: Article
• Language: English
• ISSN: 1936-0851; 1936-086X
• DOI: 10.1021/acsnano.2c04984

Graphdiyne (GDY), a two-dimensional (2D) carbon material with diacetylenic linkages (−CC–CC−) structures, has attracted enormous attention in various fields. However, the controlled synthesis of GDY films is still challenging because of the low alkyne coupling efficiency and out-of-plane growth. Here, we employed a highly efficient Cu­(II)-N,N,N′,N′-tetramethylethylenediamine (Cu­(II)-TMEDA) catalyst and constructed a superspreading liquid/liquid interface on a hydrogel for rapid and controllable synthesis of GDY thin films. GDY films with controllable thickness from 4 to 50 nm and large-scale uniform morphology can be prepared within 2 h at room temperature. The mechanism of growth was revealed to be a nucleation and in-plane extension process. Meanwhile, the as-grown GDY films showed excellent photothermal conversion efficiency, which induces the release of Cu­(II) ions from the hydrogel and exhibits high efficiency in synergistic antibacteria.