Tunable, Discrete, Three-Dimensional Hybr1D Nanoarchitectures

摘要

Discrete nanoparticle (NP) ensembles have attracted increasing attention because of their potential in fundamental research and novel functional devices. For example, discrete gold and silver NP dimers displayed strong plasmon coupling and functioned as molecular rulers. Self-assembly is a powerful and w1Dely used route to construct discrete superstructures of NPs. To tailor the components and conformation of such structures, different strategies have been explored to gu1De NP self-assembly. Small molecules and pept1Des have proven their efficacy in forming various nanostructures but are restricted to organizing NPs into one-dimensional (1D) and 2D nanostructures.DNA prov1Des a better platform for gu1Ding assembly of 3D as well as 1D and 2D nanostructures. Recently, pyram1Dalnd tubular nanoarchitectures were constructed by assembling unitary or binary NPs with DNA as scaffold. However, a robust platform for controlling 3D NP assembly with finer tunability still remains a challenge. An 1Deal strategy to assemble discrete 3D nanoarchitectures should offer 1) tunability of particle species, particle number, and interparticle distance in a single ensemble, 2) good stability, and 3) high yield of products.