TY - JOUR
T1 - Powering the programmed nanostructure and function of gold nanoparticles with catenated DNA machines
AU - Elbaz, Johann
AU - Cecconello, Alessandro
AU - Fan, Zhiyuan
AU - Govorov, Alexander O.
AU - Willner, Itamar
N1 - Funding Information:
Parts of this study are supported by the European Research Council (ERC) and by the Israel Science Foundation. Z.F. and A.O.G. were supported by the US Army Research Office under contract/grant number W911NF-12-1-0407.
PY - 2013
Y1 - 2013
N2 - DNA nanotechnology is a rapidly developing research area in nanoscience. It includes the development of DNA machines, tailoring of DNA nanostructures, application of DNA nanostructures for computing, and more. Different DNA machines were reported in the past and DNA-guided assembly of nanoparticles represents an active research effort in DNA nanotechnology. Several DNA-dictated nanoparticle structures were reported, including a tetrahedron, a triangle or linear nanoengineered nanoparticle structures; however, the programmed, dynamic reversible switching of nanoparticle structures and, particularly, the dictated switchable functions emerging from the nanostructures, are missing elements in DNA nanotechnology. Here we introduce DNA catenane systems (interlocked DNA rings) as molecular DNA machines for the programmed, reversible and switchable arrangement of different-sized gold nanoparticles. We further demonstrate that the machine-powered gold nanoparticle structures reveal unique emerging switchable spectroscopic features, such as plasmonic coupling or surface-enhanced fluorescence.
AB - DNA nanotechnology is a rapidly developing research area in nanoscience. It includes the development of DNA machines, tailoring of DNA nanostructures, application of DNA nanostructures for computing, and more. Different DNA machines were reported in the past and DNA-guided assembly of nanoparticles represents an active research effort in DNA nanotechnology. Several DNA-dictated nanoparticle structures were reported, including a tetrahedron, a triangle or linear nanoengineered nanoparticle structures; however, the programmed, dynamic reversible switching of nanoparticle structures and, particularly, the dictated switchable functions emerging from the nanostructures, are missing elements in DNA nanotechnology. Here we introduce DNA catenane systems (interlocked DNA rings) as molecular DNA machines for the programmed, reversible and switchable arrangement of different-sized gold nanoparticles. We further demonstrate that the machine-powered gold nanoparticle structures reveal unique emerging switchable spectroscopic features, such as plasmonic coupling or surface-enhanced fluorescence.
UR - http://www.scopus.com/inward/record.url?scp=84879616203&partnerID=8YFLogxK
U2 - 10.1038/ncomms3000
DO - 10.1038/ncomms3000
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AN - SCOPUS:84879616203
SN - 2041-1723
VL - 4
JO - Nature Communications
JF - Nature Communications
M1 - 2000
ER -