在螺旋金納米顆粒超構體中構造各向異性

Deliberate Introduction of Particle Anisotropy in Helical Gold Nanoparticle Superstructures

https://doi.org/10.1002/ppsc.201800504

Helical nanoparticle (NP) superstructures are an important class of chiral NP assemblies. The nature of the constituent NPs (size and shape) within these assemblies dictates their optical properties. However, the construction of helical NP superstructures consisting of various anisotropic NPs remains challenging. Here, a set of cetyltrimethylammonium bromide derivatives is employed to transform constituent spherical gold NPs (≈3 nm) within a chiral single‐helical assembly into gold nanoprisms (edge length ? 10 nm). Careful optimization of this strategy may lead to designed chiral NP architectures with tunable optical properties.

螺旋納米粒子（NP）超結構是一類重要的手性NP組件。 這些組件中組分NP（尺寸和形狀）的性質決定了它們的光學性質。 然而，由各種各向異性NP組成的螺旋NP超結構的構造仍然具有挑戰性。 這里，使用一組十六烷基三甲基溴化銨衍生物將手性單螺旋組件內的組成球形金納米顆粒（≈3nm）轉變成金納米棱柱（邊長?10nm）。 仔細優化該策略可能會導致設計具有可調光學特性的手性NP結構。