Emergence of Chirality in an Optically Active Two-Dimensional Crystal with a Spiral Surface Pattern
Some one-dimensional (1D) crystals containing a screw dislocation along their longer axis exhibit a helical twist due to lattice strain. These chiral structures have been thoroughly investigated by using transmission electron microscopy. However, whether two-dimensional (2D) crystals with a spiral surface pattern, presumably containing a screw dislocation, are structurally chiral remains unclear because their internal structures are not visible. Here, we report that a particular 2D crystal with a spiral surface pattern emits circularly polarized luminescence despite comprising achiral building blocks. Comprehensive X-ray structural analysis of this 2D crystal reveals a helical structure with an achiral space group featuring distinctive twinning. This twinned 2D crystal consists of four centrosymmetric components. Applying the twin law to these four achiral components results in a spirally arranged topology, leading to the emergence of chirality in the 2D crystals.
Authors
- Daisuke Hashizume (ORCID: https://orcid.org/0000-0001-7152-4408)
- Hubiao Huang
- Hiroshi Satō (ORCID: https://orcid.org/0000-0002-5899-1340)
- Xianqing Lin (ORCID: https://orcid.org/0000-0002-5101-4651)
- Takuzo Aida (ORCID: https://orcid.org/0000-0002-0002-8017)
- Kiyohiro Adachi (ORCID: https://orcid.org/0000-0002-8224-8602)
- Gangfeng Chen
- Manabu Hoshino (ORCID: https://orcid.org/0000-0002-5531-0706)
- Kang Wang (ORCID: https://orcid.org/0000-0002-7178-1225)
- Zhenghong Chen (ORCID: https://orcid.org/0000-0002-3983-8770)
- Shaodong Zhang (ORCID: https://orcid.org/0000-0001-7923-8457)
- Yong Sheng Zhao (ORCID: https://orcid.org/0000-0002-4329-0103)
Institutions
- Hiroshima University (JP)
- Shanghai Jiao Tong University (CN)
- Chinese Academy of Sciences (CN)
- RIKEN Center for Emergent Matter Science (JP)
- Institute of Chemistry (CN)
- University of Chinese Academy of Sciences (CN)
- The University of Tokyo (JP)
- Teikyo University (JP)
Publication Details
- Journal
- Journal of the American Chemical Society
- Published
- 2025-01-16
- DOI
- https://doi.org/10.1021/jacs.4c12631
- Citations
- 1
- Primary Topic
- Metamaterials and Metasurfaces Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.43
Funders
- National Natural Science Foundation of China
- Kao Corporation
- Japan Society for the Promotion of Science
- RIKEN
- Fusion Oriented REsearch for disruptive Science and Technology