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Harmonic Nanoparticles for Regenerative Research
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Core-satellite nanostructures and their biomedical applications.

Qing Gu1, Jian Zhu2, Guo-Jun Weng1

  • 1The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China.

Mikrochimica Acta
|November 26, 2022
PubMed
Summary

Plasmonic core-satellite nanostructures, assembled using DNA and other methods, offer enhanced optical properties. These nanomaterials show promise for applications in biosensing, imaging, and diagnostics.

Keywords:
Biomedical applicationsCore-satellite nanostructuresSERSSensingSynthesisTherapy

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Area of Science:

  • * Nanotechnology and Materials Science
  • * Plasmonics and Optics
  • * Biomedical Engineering

Background:

  • * Plasmonic core-satellite nanostructures have garnered significant interest since their inception in 1998.
  • * These structures are assembled from simple building blocks, notably via DNA-directed assembly.
  • * They exhibit unique enhanced and synergistic optical properties.

Purpose of the Study:

  • * To review synthetic methods for plasmonic core-satellite nanostructures, focusing on bottom-up approaches.
  • * To discuss the morphology classification and influencing factors of these nanostructures.
  • * To summarize their optical properties and biomedical applications.

Main Methods:

  • * Introduction to various bottom-up synthesis techniques: DNA, molecular, protein, peptide, amino acid, metal ion-assisted assembly, electrostatic adsorption, clicked-to-assembly, and in situ deposition.
  • * Classification of nanostructure morphologies.
  • * Analysis of factors influencing morphology.
  • * Overview of optical properties and biomedical applications.

Main Results:

  • * Detailed exploration of diverse bottom-up synthesis strategies for creating core-satellite nanostructures.
  • * Comprehensive classification of morphologies and identification of key influencing factors.
  • * Summary of optical characteristics, including localized surface plasmon resonance, surface-enhanced Raman scattering, and fluorescence.
  • * Review of applications in biosensing, imaging, drug delivery, and diagnostics.

Conclusions:

  • * Plasmonic core-satellite nanostructures are versatile nanomaterials with tunable optical properties.
  • * Bottom-up assembly methods offer precise control over structure and function.
  • * Significant potential exists for advancing biomedical technologies through these nanostructures.