Precisely Shaped, Uniformly Formed Gold Nanocubes with Ultrahigh Reproducibility in Single-Particle Scattering and Surface-Enhanced Raman Scattering

Nano Letters
Jeong-Eun ParkJwa-Min Nam

Abstract

Synthesizing plasmonic nanostructures in an ultraprecise manner is of paramount importance because the nanometer-scale structural details can significantly affect their plasmonic properties. Au nanocubes (AuNCs) have been a highly promising, heavily studied nanostructure with high potential in various fields, but an ultraprecise synthesis from 10 to 100 nm in size over a large number of AuNCs has not been well established. Precisely structured AuNC-based studies for a highly reproducible, quantitative plasmonic signal generation [e.g., quantitative surface-enhanced Raman scattering (SERS)] are needed for reliable use and exploration in the beneficial properties of AuNCs. Here, we developed a strategy for AuNC synthesis with the desired size and shape, ranging from 17 to 78 nm particularly with highly controlled corner sharpness, by precisely controlling the growth rate of different facets and AuNC-specific flocculation which enabled ultrahigh yields (∼98-99%). Importantly, the precisely shaped AuNCs can scatter light in a spectrally reproducible manner, and the SERS enhancement factors (EFs) for the AuNC dimers are very narrowly distributed (the EFs of 72 nm sharp-cornered cube dimers have a distribution within 1 order of magni...Continue Reading

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Citations

Aug 30, 2019·Chemical Society Reviews·Lijiao YangXiaoyuan Chen
Jul 30, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Xingyi Ma, Sang Jun Sim
Oct 21, 2020·Advanced Materials·Ji-Hyeok HuhSeungwoo Lee
Feb 27, 2021·Chemical Communications : Chem Comm·Michael ErkelenzSebastian Schlücker
Jun 19, 2021·The Journal of Physical Chemistry Letters·Sunghee LeeHaemi Lee
Jul 17, 2021·Journal of the American Chemical Society·Jiajing ZhouJesse V Jokerst
Sep 4, 2019·ACS Nano·Judith LangerLuis M Liz-Marzán
Aug 19, 2020·ACS Nano·Harshal Agrawal, Erik C Garnett
Apr 3, 2020·Nano Letters·Ji-Hyeok HuhSeungwoo Lee
Sep 15, 2021·ACS Applied Materials & Interfaces·Matthew N CreyerJesse V Jokerst
Dec 10, 2021·Nanomedicine·Tânia Ferreira-GonçalvesCatarina P Reis
Jan 26, 2022·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Paul Z ChenFrank X Gu

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