Gold Nanorods with PEG-Alkanethiol Ligands Etching in Graphene Liquid Cell Electron Microscopy-38 mM FeCl3

Premade gold nanorods with PEG-Alkanethiol ligands were etched in a graphene liquid cell and imaged using Transmission Electron Microscopy (TEM). An aqueous solution of gold nanorods, Tris Buffer-HCl, and FeCl3 was encapsulated between graphene sheets. The final concentration of FeCl3 was 38 mM. Through a combination of the electron beam-generated radiolysis products and the FeCl3, the nanorods underwent non-equilibrium etching. See associated papers for more details.Â

预先合成的带有聚乙二醇-烷硫醇（PEG-Alkanethiol）配体的金纳米棒在石墨烯液体池（graphene liquid cell）中进行刻蚀，并通过透射电子显微镜（Transmission Electron Microscopy, TEM）完成成像。将金纳米棒、三羟甲基氨基甲烷-盐酸缓冲液（Tris Buffer-HCl）与氯化铁（FeCl₃）的水溶液封装于石墨烯片层之间，氯化铁的终浓度为38 mM。在电子束辐解产物与氯化铁的共同作用下，金纳米棒发生了非平衡刻蚀。更多细节可参见相关研究论文。