Ultra-dense (~20 Tdot/in2) nanoparticle array from an ordered supramolecular dendrimer building block containing a metal precursor
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초록
내용
The creation of an ultra-dense, highly periodic nanoparticle array from a soft building block is one of the most important issues in the fields of material science and nanotechnology. Herein, we demonstrate for the first time the use of a supramolecular dendrimer assembly for the formation of a highly ordered nanoparticle array with a high areal density of ~20 Tdot/in2. By the simple thermal annealing of a supramolecular dendrimers containing a metal precursor between two flat, solid substrates, a hexagonal array of small gold nanoparticles (diameter of ~1.6 nm, center-to-center distance of ~5.3 nm), oriented normal to the bottom, was achieved. The findings provide a new paradigm for creating highly periodic, ultra-dense nanoparticle arrays by using a supramolecular assembly. We anticipate that this study will lead to the creation of a large family of supramolecular dendrimers that can be utilized as soft templates for creating periodic, ultra-dense nanoparticle arrays.