Ultrasmall Hollow Gold–Silver Nanoshells with Extinctions Strongly Red-Shifted to the Near-Infrared

2011 ◽  
Vol 3 (9) ◽  
pp. 3616-3624 ◽  
Author(s):  
Varadee Vongsavat ◽  
Brandon M. Vittur ◽  
William W. Bryan ◽  
Jun-Hyun Kim ◽  
T. Randall Lee
Keyword(s):  
Near Infrared ◽  
Gold Silver ◽  
Silver Nanoshells

scholarly journals Hollow Gold-Silver Nanoshells Coated with Ultrathin SiO2 Shells for Plasmon-Enhanced Photocatalytic Applications

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4967
Author(s):  
Pannaree Srinoi ◽  
Maria Marquez ◽  
Tai-Chou Lee ◽  
T. Lee
Keyword(s):  
Electron Microscopy ◽  
Silver Nanoparticles ◽  
Near Infrared ◽  
Sodium Silicate Solution ◽  
Silica Shell ◽  
Localized Surface Plasmon ◽  
Galvanic Replacement ◽  
Gold Silver ◽  
Silver Nanoshells ◽  
Photocatalytic Applications

This article details the preparation of hollow gold-silver nanoshells (GS-NSs) coated with tunably thin silica shells for use in plasmon-enhanced photocatalytic applications. Hollow GS-NSs were synthesized via the galvanic replacement of silver nanoparticles. The localized surface plasmon resonance (LSPR) peaks of the GS-NSs were tuned over the range of visible light to near-infrared (NIR) wavelengths by adjusting the ratio of silver nanoparticles to gold salt solution to obtain three distinct types of GS-NSs with LSPR peaks centered near 500, 700, and 900 nm. Varying concentrations of (3-aminopropyl)trimethoxysilane and sodium silicate solution afforded silica shell coatings of controllable thicknesses on the GS-NS cores. For each type of GS-NS, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images verified our ability to grow thin silica shells having three different thicknesses of silica shell (~2, ~10, and ~15 nm) on the GS-NS cores. Additionally, energy-dispersive X-ray (EDX) spectra confirmed the successful coating of the GS-NSs with SiO2 shells having controlled thicknesses. Extinction spectra of the as-prepared nanoparticles indicated that the silica shell has a minimal effect on the LSPR peak of the gold-silver nanoshells.

Gold and silver quantification from gold-silver nanoshells in HaCaT cells

2018 ◽  
Vol 47 ◽  
pp. 70-78 ◽  
Author(s):  
Stéphane Faucher ◽  
Samantha Soulé ◽  
Anne-Laure Bulteau ◽  
Joachim Allouche ◽  
Gaëtane Lespes
Keyword(s):  
Hacat Cells ◽  
Gold Silver ◽  
Silver Nanoshells

scholarly journals Microspectroscopic SERS detection of interleukin-6 with rationally designed gold/silver nanoshells

The Analyst ◽  
2013 ◽  
Vol 138 (6) ◽  
pp. 1764 ◽  
Author(s):  
Yuling Wang ◽  
Mohammad Salehi ◽  
Max Schütz ◽  
Katharina Rudi ◽  
Sebastian Schlücker
Keyword(s):  
Interleukin 6 ◽  
Gold Silver ◽  
Sers Detection ◽  
Silver Nanoshells

Near-infrared Emitting Gold-silver Nanoclusters with Large Stokes Shift for Two-Photon in Vivo Imaging

2021 ◽  
Author(s):  
Yaowei Peng ◽  
Xiaoyu Huang ◽  
Fu Wang
Keyword(s):  
In Vivo Imaging ◽  
Near Infrared ◽  
Stokes Shift ◽  
Silver Nanoclusters ◽  
One Pot ◽  
Two Photon ◽  
Nir Fluorescence ◽  
Gold Silver ◽  
Stokes Shifts

Near-infrared emitting bi-metallic gold/silver nanoclusters with great stokes shifts were manufactured through one-pot synthesis. The gold/silver nanoclusters exhibit strong NIR fluorescence due to the silver effect, which can be applied...

Optical properties and SERS efficiency of tunable gold/silver nanoshells

2009 ◽  
Vol 50 (1) ◽  
pp. 43-47 ◽  
Author(s):  
Magdalena Gellner ◽  
Bernd Küstner ◽  
Sebastian Schlücker
Keyword(s):  
Optical Properties ◽  
Gold Silver ◽  
Silver Nanoshells

SERS Labels for Red Laser Excitation: Silica-Encapsulated SAMs on Tunable Gold/Silver Nanoshells

2009 ◽  
Vol 48 (11) ◽  
pp. 1950-1953 ◽  
Author(s):  
Bernd Küstner ◽  
Magdalena Gellner ◽  
Max Schütz ◽  
Friedrich Schöppler ◽  
Alexander Marx ◽  
...  
Keyword(s):  
Laser Excitation ◽  
Gold Silver ◽  
Silver Nanoshells

Cover Picture: SERS Labels for Red Laser Excitation: Silica-Encapsulated SAMs on Tunable Gold/Silver Nanoshells (Angew. Chem. Int. Ed. 11/2009)

2009 ◽  
Vol 48 (11) ◽  
pp. 1867-1867 ◽  
Author(s):  
Bernd Küstner ◽  
Magdalena Gellner ◽  
Max Schütz ◽  
Friedrich Schöppler ◽  
Alexander Marx ◽  
...  
Keyword(s):  
Laser Excitation ◽  
Gold Silver ◽  
Silver Nanoshells
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