| 초록 |
For nanobiosensor applications, precise control over the structure of metal nanomaterials is an important issue. Here we show a directed crystallization of gold by a single DNA molecular regulator in a sequence-independent manner and its applications in three-dimensional topological controls of crystalline nanostructures. DNA strands were anchored onto the gold nanoseed (~5 nm), and gold precursors (HAuCl4) were reduced to grow gold nanocrystals with defined topologies, including asymmetric ones with pushpin-, star- and biconcave disk-like structures. The approach of employing DNA molecule as scaffold expands the current tools available for designing and synthesizing feature-rich nanoplasmonic particles for future biosensing technology. |
