Synthesis of Bitten Gold Nanoparticles with Single-Particle Chiroptical Responses

Han Zhang, Yang Chen, Ka Kit Chui, Jiapeng Zheng, Yicong Ma, Danjun Liu, Zhifeng Huang, Dangyuan Lei, Jianfang Wang*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

7 Citations (Scopus)

Abstract

The introduction of structural complexity to nanoparticles brings them interesting properties. Regularity breaking has been challenging in the chemical synthesis of nanoparticles. Most reported chemical methods for synthesizing irregular nanoparticles are complicated and laborious, largely hindering the exploration of structural irregularity in nanoscience. In this study, the authors have combined seed-mediated growth and Pt(IV)-induced etching to synthesize two types of unprecedented Au nanoparticles, bitten nanospheres and nanodecahedrons, with size control. Each nanoparticle has an irregular cavity on it. They exhibit distinct single-particle chiroptical responses. Perfect Au nanospheres and nanorods without any cavity do not show optical chirality, which demonstrates that the geometrical structure of the bitten opening plays a decisive role in the generation of chiroptical responses.
Original languageEnglish
Article number2301476
Number of pages9
JournalSmall
Volume19
Issue number26
DOIs
Publication statusPublished - Jun 2023

Scopus Subject Areas

  • Biotechnology
  • General Chemistry
  • Biomaterials
  • General Materials Science
  • Engineering (miscellaneous)

User-Defined Keywords

  • bitten nanoparticles
  • chirality
  • chiroptical responses
  • plasmon resonance
  • seed-mediated growth

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