Chiroptical switching and strong circularly polarized luminescence in peptide supramolecular assemblies

Xin Li, Qingquan Han, Xianbao Li (), Rui Li, Anhe Wang, Sen Liang, Yutao Sang, Jieling Li, Yajie Tian, Yang Yang, Qi Li (), Shuo Bai () and Junbai Li ()
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Xin Li: Chinese Academy of Sciences
Qingquan Han: Chinese Academy of Sciences
Xianbao Li: National Center for Nanoscience and Technology
Rui Li: Chinese Academy of Sciences
Anhe Wang: Chinese Academy of Sciences
Sen Liang: Chinese Academy of Sciences
Yutao Sang: Fudan University
Jieling Li: Chinese Academy of Sciences
Yajie Tian: Chinese Academy of Sciences
Yang Yang: National Center for Nanoscience and Technology
Qi Li: Chinese Academy of Sciences
Shuo Bai: Chinese Academy of Sciences
Junbai Li: University of Chinese Academy of Sciences

Nature Communications, 2025, vol. 16, issue 1, 1-10

Abstract: Abstract Peptide-based materials offer unique advantages for constructing supramolecular chiral systems due to their bioactivity and intrinsic chirality. However, precise control over the expression, transfer, and amplification of chirality from the molecular to supramolecular level remains a significant challenge in developing high-performance chiral materials. In this study, we demonstrate that achiral anions regulate hydrogen bonding interactions in dipeptide assembly, leading to the formation of chiral microrolls composed of two-dimensional nanosheets. These microrolls exhibit pH-dependent chiroptical switching and intense circularly polarized luminescence with a dissymmetry factor (|glum|) of 0.062. Furthermore, the chiral ultraviolet emission from these microrolls enables enantioselective polymerization of diacetylene, offering potential applications in chiral catalysis. These findings enhance our understanding of chirality modulation in biomolecular assemblies and provide a pathway toward the development of high-performance chiral biomaterials.

Date: 2025
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DOI: 10.1038/s41467-025-61007-6

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