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Updated: Aug 5, 2026
08:15
Self-Assembly of Gamma-Modified Peptide Nucleic Acids into Complex Nanostructures in Organic Solvent Mixtures
Published on: June 26, 2020
Multispecific DNA coatings for self-assembly
Tine C M Stevens1, Amy van der Sluis1, Ilja K Voets1
1Laboratory of Self-Organizing Soft Matter, Department of Chemical Engineering and Chemistry & Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands. p.g.moerman@tue.nl.
Soft Matter
|July 30, 2026
Summary
Researchers developed methods for creating DNA-coated particles with tunable multispecific coatings. Precise control over particle interactions is key for designing complex, finite-sized dynamic structures.
Area of Science:
- Materials Science
- Nanotechnology
- Biotechnology
Background:
- DNA-coated particles offer programmable interactions for building complex structures.
- Achieving tunable ratios of multiple DNA sequences on particles is crucial for advanced self-assembly.
- Understanding how coating composition affects assembly is essential for exploiting DNA programmability.
Purpose of the Study:
- To compare two strategies for grafting multiple DNA sequences onto colloidal particles in tunable ratios.
- To investigate the influence of coating composition on the self-assembly of DNA-coated particles.
- To identify limitations and guide the design of finite-sized dynamic structures using multispecific DNA coatings.
Main Methods:
- Comparison of click chemistry and isothermal DNA polymerization for creating multispecific DNA coatings on micron-sized colloidal particles.
- Characterization of coating composition and batch-to-batch variation for each grafting method.
- Experimental self-assembly studies to observe particle behavior under controlled coating compositions and temperature conditions.
Main Results:
- Click chemistry resulted in significant batch-to-batch variation in coating composition.
- Isothermal DNA polymerization provided predictable coating compositions with high precision.
- Equilibrium co-assembly of multiple particle types was limited by the narrow temperature window for reversible interactions.
Conclusions:
- Precise control over multispecific DNA coatings is achievable with methods like isothermal DNA polymerization.
- Sequential assembly pathways must be designed based on coating composition to dictate binding order.
- Systematic tuning of interaction strength and sequential assembly are prerequisites for realizing complex, dynamic DNA-assembled structures.
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