▎ 摘　　要

NOVELTY - Preparing electrically functionalized graphene electron microscope carrier net comprises reacting the graphene film with the diazonium salt, adopting an aromatic diazonium salt with an electron-donating group or an electron-withdrawing group to react with the graphene film formed on the surface of the metal substrate, and obtaining graphene film modified by an aromatic compound with an electron-donating group or an aromatic compound with an electron-withdrawing group, laying the hydrocarbon mixture by at least partially laying the hydrocarbon mixture on the surface of the modified graphene film, transferring the graphene film to the electron microscope carrier grid, removing the metal substrate, and transferring the modified graphene film covered with the hydrocarbon mixture to the electron microscope carrier grid and removing the hydrocarbon mixture. USE - Preparing electrically functionalized graphene electron microscope carrier net. ADVANTAGE - The method enables to prepare different electrically functionalized graphene electron microscope carrier net, which can bring great convenience to the sampling and later three-dimensional reconstruction of the freezing electron microscope. The hydrocarbon mixture is not only easy safety buy, but also has mild property ratio, polymer to be remove compared with the high-molecular polymer, and is easy to be dissolved in a non-polar solvent, for organic solvent, e.g. petroleum ether can be cleaned, under the transmission electron microscope and atomic force microscope, observing the modified and transferred graphene film has good cleanliness, covering degree and flatness, the diffraction point characteristic graphene is clear and visible, and the covering degree of the graphene hole is more than 95%. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an electrically functionalized graphene electron microscope carrier grid prepared by the above method.