超分子化学
扫描隧道显微镜
手性(物理)
纳米技术
自旋电子学
材料科学
聚合物
化学物理
超分子聚合物
对映体
非共价相互作用
化学
物理
结晶学
分子
立体化学
有机化学
凝聚态物理
晶体结构
量子力学
铁磁性
氢键
Nambu–Jona Lasinio模型
夸克
手征对称破缺
作者
Kyeong‐Im Hong,Abhinandan Kumar,Ana María García,Subrata Majumder,Amparo Ruiz‐Carretero
摘要
Mastering the manipulation of the electron spin plays a crucial role in comprehending the behavior of organic materials in several applications, such as asymmetric catalysis, chiroptical switches, and electronic devices. A promising avenue for achieving such precise control lies in the Chiral Induced Spin Selectivity (CISS) effect, where electrons with a favored spin exhibit preferential transport through chiral assemblies of specific handedness. Chiral supramolecular polymers emerge as excellent candidates for exploring the CISS effect due to their ability to modulate their helical structure through noncovalent interactions. In this context, systems capable of responding to external stimuli are particularly intriguing, sometimes even displaying chirality inversion. This study unveils spin selectivity in chiral supramolecular polymers, derived from single enantiomers, through scanning tunneling microscopy conducted in scanning tunneling spectroscopy mode. Following two distinct sample preparation protocols for each enantiomer, we generate supramolecular polymers with opposite handedness and specific spin transport characteristics. Our primary focus centers on chiral π-conjugated building blocks, with the aim of advancing novel systems that can inspire the organic spintronics community from a supramolecular chemistry level.
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