Chirality Transfer in Galvanic Replacement Reactions

Junjun Liu, Ziyue Ni, Proloy Nandi, Utkur Mirsaidov, Jeffery HUANG*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Demand for the transfer of chirality from a pre-engineered nanoparticle to any other metal is of fundamental importance for developing a wide range of chirality-related applications. Herein, we show that binary alloy chiral nanoparticles (CNPs) with an engineerable composition can be formed from metallic CNPs with intrinsic structural chirality serving as sacrificial templates (STs), via a galvanic replacement reaction (GRR). This GRR-mediated chirality transfer is a general phenomenon and results in the formation of Cu-Ag CNPs with solid morphology and mesoporous CNPs made of Ag-Au, Ag-Pt, and Ag-Pd. Our study imposes a new component, i.e., structural chirality, on the GRR. The insights from our study improve our fundamental understanding of the GRR principle and devise a versatile method to generate mesoporous alloy CNPs for developing prominent chirality-related applications in asymmetric catalysis, enantiodifferentiation, enantioseparation, biodetection, and bioimaging.

Original languageEnglish
Pages (from-to)7427-7433
Number of pages7
JournalNano Letters
Volume19
Issue number10
DOIs
Publication statusPublished - 9 Oct 2019

Scopus Subject Areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

User-Defined Keywords

  • binary alloy
  • chiral nanoparticles
  • chirality transfer
  • Galvanic replacement reaction
  • glancing angle deposition

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