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Encoding Morphogenesis of Quasi-Triangular Gold Nanoprisms with DNA.

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  • 1School of Chemical Science and Engineering, Shanghai Research Institute for Intelligent Autonomous Systems, Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai, 200092, China.

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|July 28, 2022
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Summary

This study stabilizes unstable gold quasi-nanoprisms using thiol-DNA (HS-DNA), enabling investigation of their plasmonic properties and use in self-assembly for advanced light manipulation applications.

Keywords:
HS-DNAInformation EncodingMorphological EvolutionPlasmonic PropertiesQuasi-Nanoprism

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Plasmonics

Background:

  • Gold nanoparticle properties depend on morphology.
  • Research on nonequilibrium gold nanoprism intermediates is limited.
  • Understanding these intermediates is key for advanced applications.

Purpose of the Study:

  • To stabilize low-stability gold quasi-nanoprisms using thiol-DNA (HS-DNA).
  • To investigate the plasmonic properties of these stabilized nanoprisms.
  • To explore their use as building blocks for self-assembly and information encoding.

Main Methods:

  • Employing thiol-DNA (HS-DNA) to protect gold quasi-nanoprisms with varying truncation degrees.
  • Investigating the stability of HS-DNA protected quasi-nanoprisms in different microenvironments.
  • Utilizing HS-DNA loaded quasi-nanoprisms for programmable self-assembly and information encoding.

Main Results:

  • HS-DNA significantly enhances the stability of quasi-nanoprisms.
  • Intrinsic plasmonic properties related to morphology were successfully investigated.
  • Programmable self-assembly of higher-order hybrid structures was achieved.
  • Orthogonal barcode-like information encoding and decoding capabilities were demonstrated.

Conclusions:

  • Thiol-DNA (HS-DNA) is an effective stabilizer for low-stability gold quasi-nanoprisms.
  • These stabilized nanoprisms are versatile platforms for self-assembly and nanoscale information technology.
  • This work opens new avenues for light manipulation at the nanoscale using engineered nanomaterials.