A one-pot in-situ synthesis of copper cluster doped hydrogen substituted graphdiyne nanofibers (Cu-HsGDY)

Wenjun Hao,Lei Jin,Rong Fan,Xinyu Su,Zongping Chen,M.M.H Mostafa,S Manickam

doi:10.1051/e3sconf/202126102055

Abstract

Graphdiyne (GDY) is a new type of two-dimensional (2D) carbon materials, in which two benzene rings are chained by diacetylenic linkages (-C≡C-C≡C-). γ-GDY is the most studied GDY due to its stable configuration and was experimentally obtained in 2010 through cross coupling reaction by using hexaethynylbenzene as precursor. Hydrogen substituted graphdiyne (HsGDY) was obtained using 1, 3, 5-triethynylbenzene as precursor in a similar process. Hereinto, a copper cluster doped hydrogen substituted graphdiyne nanofibers (Cu-HsGDY) were prepared through a facile one-pot in-situ synthetic approach in a good reproductive manner. Through simply removing the copper foil, the obtained robust Cu-HsGDY can be transferred onto arbitrary substrates, especially flexible substrates, such as polyethylene terephthalate (PET), which can be used as flexible electronics as future materials.

Highlights

In the great technological change at the turn of the 21st century, our daily lives have been boosted by the fast development of novel electronic instruments
In 1997, Graphdiyne (GDY) was predicated theoretically by Haley [8] and it is the most investigated graphyne in which two benzene rings are chained by diacetylenic linkages (-C≡CC≡C-), including α-GDY, β-GDY, γ-GDY [9]. γ-GDY is the most studied GDY due to its stable configuration [10]
The high resolution TEM (HRTEM) image depicts that the nanofiber is formed by amorphous hydrogen substituted graphdiyne nanofibers (HsGDY) anchored with copper clusters

Summary

Introduction

In the great technological change at the turn of the 21st century, our daily lives have been boosted by the fast development of novel electronic instruments. Non-natural carbon allotropes, including fullerene, carbon nanotubes, graphene, graphyne, and their derivatives, have contributed to various possibilities in the field of energy [2, 3], catalysis [4], environmental [5], and biomedical domains [6], due to their specific chemical, electronical, optical and mechanical properties. Unlike HEB for the fabrication of ultra-thin GDY films, 1,3,5-triethynylbenzene (TEB) was mainly used in the fabrication of hydrogen substituted graphdiyne nanofibers (HsGDY) with three-dimensional morphologies due to its unique chemical structure. Freestanding hydrogen substituted graphdiyne (HsGDY) frameworks were achieved and applied in flexible energy storage systems [21, 22]. Cu nanoparticle modified graphene sheets electrode was reported and applied as a novel non-enzymatic glucose sensor [24]. The obtained CuHsGDY nanofibers can be applied in flexible electronics which will be reported elsewhere

Materials

Synthesis of Cu-HsGDY on Cu foil

Transfer of Cu-HsGDY

Characterizations

Results and discussions

Conclusions