High-yield synthesis of triangular gold nanoplates with improved shape uniformity, tunable edge length and thickness

Abstract

We report the synthesis of uniform triangular gold nanoplates by a modified seeded growth method. The concentration of cetyltrimethylammonium bromide (CTAB) in the growth solution and the time interval between multiple steps of growth were important factors which determined the formation of uniform triangular Au nanoplates. In addition, by further isotropic overgrowth, the thickness of triangular Au nanoplates can be finely tuned within a wide range of 10-80 nm, which at present remains a challenge using conventional seeded growth.

Strategies for enhancing the sensitivity of plasmonic nanosensors

“…More information about the effects of nanoparticle size and shape on LSPR sensitivity can be found in the recent reviews [13,71]. [109,112,113,116,123,127,[131][132][133] with permission.…”

Thin metal nanostructures: synthesis, properties and applications

“…102 A recent study of seeded growth of Au nanoplates showed that control of edge length and thickness, and simultaneous improvement of the uniformity and yield can be achieved by finely tuning the experimental conditions, such as the time interval between multiple steps of growth and the concentration of CTAB in the solution. 103 In addition to the aforementioned control of size, shape and yield by seeded growth, our group recently discovered that there is a crystal structure change in the synthesis of square-like Au plates from ultrathin AuSSs (Fig. 3A–C).…”

Biosynthesis of Gold and Silver Nanoparticles with Anti-Microbial Activity by Callus Cultures of <I>Michelia champaca</I> L.

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