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Adaptable DNA interactions regulate surface triggered self assembly

Authors
  • Lanfranco, R
  • Jana, PK
  • Bruylants, G
  • Cicuta, P
  • Mognetti, BM
  • Di Michele, L
Publication Date
Aug 24, 2020
Source
Spiral - Imperial College Digital Repository
Keywords
License
Green
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Abstract

DNA-mediated multivalent interactions between colloidal particles have been extensively applied for their ability to program bulk phase behaviour and dynamic processes. Exploiting the competition between different types of DNA–DNA bonds, here we experimentally demonstrate the selective triggering of colloidal self-assembly in the presence of a functionalised surface, which induces changes in particle–particle interactions. Besides its relevance to the manufacturing of layered materials with controlled thickness, the intrinsic signal-amplification features of the proposed interaction scheme make it valuable for biosensing applications.

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