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Multipatch Colloids via DNA Ligation.

You-Jin Kim1, Joon Suk Oh2, Krishnan Srinivasan1

  • 1Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.

Langmuir : the ACS Journal of Surfaces and Colloids
|March 24, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method to create DNA patchy colloids from uniform spheres using ligation-assisted DNA functionalization. This technique enables precise control over particle interactions for programmable matter and advanced biointerfaces.

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Area of Science:

  • Colloidal science
  • Materials science
  • Nanotechnology

Background:

  • Creating anisotropic interactions in isotropic particles is difficult.
  • Existing DNA functionalization methods for patchy colloids are complex.
  • Uniform spheres lack directional interaction capabilities.

Purpose of the Study:

  • To develop a streamlined method for engineering DNA patchy colloids.
  • To enable covalent immobilization of distinct DNA functionalities without complex surface prepatterning.
  • To provide a versatile platform for programmable matter assembly.

Main Methods:

  • Utilized a ligation-assisted strategy involving sequential DNA hybridization and enzymatic ligation.
  • Engineered DNA patchy colloids from uniform spheres.
  • Characterized the resulting patches using confocal fluorescence microscopy.

Main Results:

  • Achieved covalent immobilization of distinct DNA functionalities on uniform spheres.
  • Confirmed structural integrity and spatial resolution of DNA patches.
  • Demonstrated tunability of patch geometry via particle size ratio (α).

Conclusions:

  • The ligation-assisted strategy offers a robust and versatile platform for DNA patchy colloid engineering.
  • This method simplifies the creation of programmable matter and biointerfaces.
  • Advancements in colloidal self-assembly are facilitated by this streamlined functionalization technique.