Topology-Controlled Chirality and Spin Selectivity in Two-Dimensional Covalent Organic Frameworks
Shanghai Jiao Tong University · State Key Laboratory of Metal Matrix Composites · +6 more institutions
Abstract
Controlling electron spin is fundamental to spintronics, where the chirality-induced spin selectivity (CISS) effect enables magnet-free spin-polarized transport. However, achieving robust and tunable spin polarization in solid-state materials remains a critical challenge. Here, we show that topological isomerism offers a direct strategy to modulate chirality and spin selectivity in two-dimensional (2D) covalent organic frameworks (COFs). Two Zn(salen)-based chiral COFs, TPE-KGM and TPE-SQL, were synthesized from identical precursors yet crystallized into distinct kgm and sql networks. Although compositionally identical, the kgm COF exhibits only weak local geometrical chirality, whereas the sql develops…
Citation impact
- FWCI
- 37.37
- Percentile
- 100%
- References
- 78
Authors
11- CJChao Jiang
Shanghai Jiao Tong University, State Key Laboratory of Metal Matrix Composites
- CJChuanyu Jin
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- YLYao Lv
East China University of Science and Technology, Advanced Energy Materials (United States)
- XHXing Han
Shanghai Jiao Tong University, State Key Laboratory of Metal Matrix Composites
- ZLZ. Li
Shanghai Jiao Tong University, State Key Laboratory of Metal Matrix Composites
Topics & keywords
- Chirality (physics)
- Circular dichroism
- Circular polarization
- Selectivity
- Spin polarization
- Spin (aerodynamics)
- Covalent bond