On the role of wall thickness in determining the plasmonic properties of silver-gold nanocages

Abstract

This work examines the roles played by wall thickness in determining the plasmonic properties of gold-silver (Ag-Au) nanocages. Ag-Au cages with different wall thicknesses, but the same void or outer...

Engineering the Internal Structure of Hollow Nanostructures for Enhanced Plasmonic Properties

“…In a recent study, our group designed two complementary sets of experiments using a Ag−Au nanocage as a model system. 114 In the first set of experiments, we fixed the internal void size of the nanocages and altered the wall thickness by depositing Ag−Au on the outer surfaces of the cages. These cages are termed "[Ag−Au] O-n cages" (O: wall thickness increases toward outer surfaces; n: number of consecutive Ag−Au layers that are correlated to wall thickness, n = 1−5; see Figure 3a).…”

“…The scale bar in (a) applies to all TEM images. Adapted with permission from ref . Copyright 2023 The Royal Society of Chemistry.…”

“…With the recent advancement of nanosynthesis, it has become feasible to specifically control the wall thickness of PHNs, making it possible to single out the role played by wall thickness. In a recent study, our group designed two complementary sets of experiments using a Ag–Au nanocage as a model system . In the first set of experiments, we fixed the internal void size of the nanocages and altered the wall thickness by depositing Ag–Au on the outer surfaces of the cages.…”

Gold–Silver Hybrid Nanostructures for Efficient Near-Infrared Photothermal Conversion: Core–Shell Configuration of Multipod and Hollow Cage

“…20,21 Hollow nanoparticles have been demonstrated to be effective NIR light absorbers. 22 In addition to tunable absorption that can be controlled by adjusting the ratio of the outer edge length to wall thickness, 23 the internal pores and cavities in these nanoparticles allow for multiple reflections of incident light, thereby increasing energy utilization efficiency. 24 The empty interior of these hollow nanoparticles not only provides space for encapsulating a large number of payload(s) but also enables the minimization of the use of the noble metal, which is particularly important for the development of cost-effective photothermal agents considering their scarcity and high price.…”