title: Seed-mediated synthesis of Ag nanocubes with controllable edge lengths in the range of 30-200 nm and comparison of their optical properties.
abstract: Silver nanocubes with edge lengths controllable in the range of 30-200 nm were synthesized using an approach based on seeded growth. The keys to the success of this synthesis are the use of single-crystal Ag seeds to direct the growth and the use of AgNO(3) as a precursor to elemental Ag, where the byproduct HNO(3) can block both the homogeneous nucleation and evolution of single-crystal seeds into twinned nanoparticles. Either spherical (in the shape of a cuboctahedron) or cubic seeds could be employed for this growth process. The edge length of the resultant Ag nanocubes can be readily controlled by varying the amount of Ag seeds used, the amount of AgNO(3) added, or both. For the first time, we could obtain Ag nanocubes with uniform edge lengths controllable in the range of 30-200 nm and then compare their localized surface plasmon resonance and surface-enhanced Raman scattering properties.
authors.affiliation: Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhang
authors.forename: Weiyang
authors.initials: W
authors.lastname: Li
authors.forename: Christine
authors.initials: C
authors.lastname: Moran
authors.forename: Jie
authors.initials: J
authors.lastname: Zeng
authors.forename: Jingyi
authors.initials: J
authors.lastname: Chen
authors.forename: Long-Ping
authors.initials: LP
authors.lastname: Wen
authors.forename: Younan
authors.initials: Y
authors.lastname: Xia
mesh_terms: D053768:Metal Nanoparticles / Q000737:chemistry*; D055620:Optical Phenomena; D010316:Particle Size; D012834:Silver / Q000737:chemistry*; D012835:Silver Nitrate / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D013059:Spectrum Analysis, Raman
chemical_list: D012834:Silver; D012835:Silver Nitrate