Nanoscale 3D spatial addressing and valence control of quantum dots using wireframe DNA origami.

ABSTRACT: Control over the copy number and nanoscale positioning of quantum dots (QDs) is critical to their application to functional nanomaterials design. However, the multiple non-specific binding sites intrinsic to the surface of QDs have prevented their fabrication into multi-QD assemblies with programmed spatial positions. To overcome this challenge, we developed a general synthetic framework to selectively attach spatially addressable QDs on 3D wireframe DNA origami scaffolds using interfacial control of the QD surface. Using optical spectroscopy and molecular dynamics simulation, we investigated the fabrication of monovalent QDs of different sizes using chimeric single-stranded DNA to control QD surface chemistry. By understanding the relationship between chimeric single-stranded DNA length a

SUBMITTER: Chen C 

PROVIDER: S-EPMC9399249 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature