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Complex Metal Nanostructures with Programmable Shapes from Simple DNA Building Blocks
Author(s) -
Ye Jingjing,
Aftenieva Olha,
Bayrak Türkan,
Jain Archa,
König Tobias A. F.,
Erbe Artur,
Seidel Ralf
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202100381
Subject(s) - fabrication , materials science , dumbbell , nanotechnology , nanostructure , mold , dna nanotechnology , dna , composite material , medicine , alternative medicine , pathology , biology , genetics , physical therapy
Advances in DNA nanotechnology allow the design and fabrication of highly complex DNA structures, uisng specific programmable interactions between smaller nucleic acid building blocks. To convey this concept to the fabrication of metallic nanoparticles, an assembly platform is developed based on a few basic DNA structures that can serve as molds. Programming specific interactions between these elements allows the assembly of mold superstructures with a range of different geometries. Subsequent seeded growth of gold within the mold cavities enables the synthesis of complex metal structures including tightly DNA‐caged particles, rolling‐pin‐ and dumbbell‐shaped particles, as well as T‐shaped and loop particles with high continuity. The method further supports the formation of higher‐order assemblies of the obtained metal geometries. Based on electrical and optical characterizations, it is expected that the developed platform is a valuable tool for a self‐assembly‐based fabrication of nanoelectronic and nanooptic devices.