手性(物理)
化学物理
分子
纳米技术
材料科学
石墨烯
化学
对称性破坏
物理
手征对称破缺
量子力学
有机化学
Nambu–Jona Lasinio模型
作者
Weilin Hu,Zhiyun Zhang,Wan Xiong,Mingyao Li,Yong Yan,C. L. Yang,Qi Zou,Jing‐Tao Lü,He Tian,Xuefeng Guo
出处
期刊:Science Advances
[American Association for the Advancement of Science (AAAS)]
日期:2024-07-12
卷期号:10 (28)
标识
DOI:10.1126/sciadv.ado1125
摘要
Chirality is an important aspect of nature, and numerous macroscopic methods have been developed to understand and control chirality. For the chiral tertiary amines, their flexible flipping process makes it possible to achieve high chiral controllability without bond formation and breaking. Here, we present a type of stable chiral single-molecule devices formed by tertiary amines, using graphene-molecule-graphene single-molecule junctions. These single-molecule devices allow real-time, in situ, and long-time measurements of the flipping process of an individual chiral nitrogen center with high temporal resolution. Temperature- and bias voltage–dependent experiments, along with theoretical investigations, revealed diverse chiral intermediates, indicating the regulation of the flipping dynamics by energy-related factors. Angle-dependent measurements further demonstrated efficient enrichment of chiral states using linearly polarized light by a symmetry-related factor. This approach offers a reliable means for understanding the chirality’s origin, elucidating microscopic chirality regulation mechanisms, and aiding in the design of effective drugs.
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