单层
纳米孔
材料科学
扫描隧道显微镜
吸附
半导体
纳米技术
密度泛函理论
分子
超分子化学
化学物理
富勒烯
自组装
自组装单层膜
计算化学
物理化学
光电子学
化学
有机化学
作者
Gefei Niu,Jianqun Geng,Xingyue Wang,Xiaotian Yang,Wei Xiong,Hui Zhang,Zilin Ruan,Yong Zhang,Lei Gao,Jianchen Lu,Jinming Cai
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2023-07-11
卷期号:34 (39): 395602-395602
标识
DOI:10.1088/1361-6528/ace05b
摘要
Abstract Two-dimensional (2D) supramolecular self-assembly architectures are considered one of the most significant and challenging topics in nanotechnology and modern organic chemistry. The study of these processes on surfaces is vital to achieving a higher degree of control in the design of supramolecular architecture. Herein, we report on the 2D self-assembly monolayer architectures based on C 60 and C 70 molecules on a semiconductor CuSe monolayer with periodic nanopores, which are essential for providing ideas for surface template chemistry. With the aid of low-temperature scanning tunneling microscopy/spectroscopy (LT-STM/STS) and density functional theory (DFT) calculation methods, we systematically investigate the adsorption configurations and electronic properties of C 60 and C 70 on CuSe monolayer with periodic nanopores. Our results show that both the C 60 and C 70 molecules above the nanopores will fall into the nanopores, while those on the CuSe surface will show well-defined self-assembly with various adsorption configurations. Besides, through STS measurement, the lowest unoccupied molecular orbitals (LUMOs) and characteristic peaks of fullerene molecules will be slightly different due to different adsorption configurations. This work helps us to study the adsorption behavior of the fullerene family on various kinds of semiconductor substrates, and also provides vigorous support for the development of fullerene electrical devices in the future.
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