中国物理B ›› 2023, Vol. 32 ›› Issue (9): 96802-096802.doi: 10.1088/1674-1056/acda84
Xiao Chang(常霄)1, Li Huang(黄立)1,†, Yixuan Gao(高艺璇)1, Changjiang Yu(于长江)2, Yun Cao(曹云)1, Long Lv(吕龙)2, Xiao Lin(林晓)1, Shixuan Du(杜世萱)1, and Hong-Jun Gao(高鸿钧)1
Xiao Chang(常霄)1, Li Huang(黄立)1,†, Yixuan Gao(高艺璇)1, Changjiang Yu(于长江)2, Yun Cao(曹云)1, Long Lv(吕龙)2, Xiao Lin(林晓)1, Shixuan Du(杜世萱)1, and Hong-Jun Gao(高鸿钧)1
摘要: Furazan macrocyclic compound 3,4:7,8:11,12:15,16-tetrafurazan-1,9-dioxazo-5,13- diazocyclohexadecane (DOATF) is an ideal energetic material with high heat of formation. Here, using scanning tunneling microscopy (STM) and non-contact atomic force microscopy (nc-AFM), we investigated the adsorption structure of DOATF molecules on Au(111) surface, which shows the four furanzan rings in the STM images and a bright protrusion off the center of the molecule in the nc-AFM images. Combined with density functional theory (DFT) calculations, we confirmed that the bright feature in the nc-AFM images is an N-O coordinate bond pointing upwards in one of the two azoxy groups; while the other N-O bond pointing towards the Au(111) surface. Our work contributes for a deeper understanding of the adsorption structure of macrocyclic compounds, which would promote the designing of DOATF-metal frameworks.
中图分类号: (Atomic force microscopy (AFM))