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Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates
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Chirality Transfer and Induction Across Multiscales Using Chiral Plasmonic Structures and Macroscopic Deformation.
Yousang Won1, Jeongwoo Lee1, Yoon Ho Lee2
1School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu,, Seoul 08826, Republic of Korea.
Accounts of Chemical Research
|December 8, 2025
Summary
Chiral plasmonic structures (CPSs) offer enhanced light-matter interactions for advanced technologies. Macroscopic deformations enable the fabrication of novel CPSs with tunable chiroptical responses.
Area of Science:
- Plasmonics
- Materials Science
- Optics
Background:
- Chiral materials are crucial for next-generation technologies like displays and optical communications due to their interaction with circularly polarized light (CPL).
- Molecularly chiral materials often exhibit low chiroptical activity and inefficient light conversion, limiting their applications.
- Chiral plasmonic structures (CPSs) are being developed to overcome these limitations, offering strong and tunable interactions with CPL.
Purpose of the Study:
- To review the mechanisms of chirality transfer and induction in CPSs.
- To highlight fabrication strategies for CPSs, emphasizing the role of macroscopic deformations.
- To discuss the potential of CPSs for advanced chiroptical applications and future research directions.
Main Methods:
- Focus on macroscopic deformations (twisting, rotating, stretching, etc.) to fabricate CPSs.
- Induction of plasmonic chirality by breaking symmetry in achiral plasmonic structures.
- Tuning chiroptical responses (circular dichroism, optical rotatory dispersion) via mechanical modulation.
Main Results:
- Macroscopic deformations enable the creation of novel CPSs with encoded micro- and nanoscale chirality.
- CPSs exhibit strong, tunable, and reconfigurable chiroptical responses across a wide spectral range (UV to THz).
- These structures facilitate efficient conversion of optical signals for chiroptical applications.
Conclusions:
- CPSs, particularly those fabricated using macroscopic deformations, show great promise for CPL sensors, emitters, and photonic devices.
- Further research into hybrid fabrication methods and novel deformation techniques is needed to advance chiral plasmonics.
- The ability to dynamically tune chiroptical properties opens new avenues for light-matter interaction manipulation.
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