Related Experiment Video
Updated: Jul 3, 2025
09:06
Preparation of DNA-crosslinked Polyacrylamide Hydrogels
Published on: August 27, 2014
14.6K
Domain-Selective Enzymatic Cross-linking and Etching for Shape-Morphing DNA-Linked Nanoparticle Films
Jisu Choi1, Jongwook Kim1, Jin-Young Park1
1Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea.
Nano Letters
|February 13, 2024
Summary
Researchers developed shape-morphing DNA-linked nanoparticle films that work in diverse environments. These robust films utilize enzymatic ligation for stability and demonstrate predictable, reversible shape changes in response to stimuli.
Area of Science:
- Nanotechnology
- Materials Science
- Biochemistry
Background:
- DNA's molecular recognition enables dynamic nanostructures.
- Conventional DNA nanostructures require strict environmental conditions for stability.
Purpose of the Study:
- To create shape-morphing DNA-linked nanoparticle films operational across a wide range of environmental conditions.
- To enhance the stability and responsiveness of DNA-based nanostructures.
Main Methods:
- Site-specific enzymatic ligation of DNA.
- DNA-based layer-by-layer thin film fabrication.
- Domain-selective ligation and photoinduced interlayer mixing.
Main Results:
- Fabricated nanoparticle films remained intact in challenging conditions like pure water and high temperatures.
- Demonstrated predictable and reversible shape morphing in response to environmental changes and DNA exchange.
- Created novel edge-sealed double-layered films via midlayer etching, overcoming fabrication limitations.
Conclusions:
- Enzymatic ligation enhances the environmental robustness of DNA-linked nanoparticle films.
- The developed films offer a versatile platform for stimuli-responsive nanostructures.
- Advanced fabrication techniques enable complex film architectures with unique properties.
