Domain-Selective Enzymatic Cross-linking and Etching for Shape-Morphing DNA-Linked Nanoparticle Films

Jisu Choi, Jongwook Kim, Jin Young Park, Jerome Kartham Hyun, So Jung Park

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The highly programmable and responsive molecular recognition properties of DNA provide unparalleled opportunities for fabricating dynamic nanostructures capable of structural transformation in response to various external stimuli. However, they typically operate in tightly controlled environments because certain conditions (ionic strength, pH, temperature, etc.) must be met for DNA duplex formation. In this study, we adopted site-specific enzymatic ligation and DNA-based layer-by-layer thin film fabrication to build shape-morphing DNA-linked nanoparticle films operational in a broad range of environments. The ligated films remained intact in unusual conditions such as pure water and high temperature causing dissociation of DNA duplexes and showed predictable and reversible shape morphing in response to various environmental changes and DNA exchange reactions. Furthermore, domain-selective ligation combined with photoinduced interlayer mixing allowed for the fabrication of unusual edge-sealed double-layered films through midlayer etching, which is difficult to realize by other methods.

Original languageEnglish
Pages (from-to)2574-2580
Number of pages7
JournalNano Letters
Volume24
Issue number8
DOIs
StatePublished - 28 Feb 2024

Bibliographical note

Publisher Copyright:
© 2024 American Chemical Society.

Keywords

  • DNA Ligation
  • DNA-Directed Self-assembly
  • Gold Nanoparticle
  • Layer-by-Layer
  • Stimuli-Responsive

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