Patterning Nanoparticles with DNA Molds
We report a nanopatterning strategy in which self-assembled DNA nanostructures serve as structural templates. In previous work, ordering of NPs primarily relied on specific recognition, e.g., DNA–DNA hybridization. Only a few cases have been reported on nonspecific adsorption. Unfortunately, these s...
Saved in:
Published in | ACS applied materials & interfaces Vol. 11; no. 15; pp. 13853 - 13858 |
---|---|
Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
United States
American Chemical Society
17.04.2019
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | We report a nanopatterning strategy in which self-assembled DNA nanostructures serve as structural templates. In previous work, ordering of NPs primarily relied on specific recognition, e.g., DNA–DNA hybridization. Only a few cases have been reported on nonspecific adsorption. Unfortunately, these studies were limited by the integrity and homogeneity of templates and the variety of patterned nanoparticles (NPs). Herein, we have developed a general method to pattern various NPs. The NPs adsorb onto substrate via NP–substrate direct interactions and the substrates are patterned into large arrays (>4 × 4 μm) of tiny, accessible cavities by self-assembled DNA arrays. As a demonstration, DNA templates include tetragonal and hexagonal arrays and the NPs include individual DNA nanomotifs, gold nanoparticles (AuNPs), and proteins. All nanostructures have been confirmed by atomic force microscopy and corresponding fast Fourier transform (FFT) analysis. |
---|---|
ISSN: | 1944-8244 1944-8252 |
DOI: | 10.1021/acsami.8b22691 |