Journal
ACS NANO
Volume 6, Issue 1, Pages 802-809Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn2042797
Keywords
DNA; asymmetric nanocluster; self-assembly; Janus nanoparticle
Categories
Funding
- National Science Foundation Center for Nanoscale Chemical-Electrical-Mechanical Manufacturing Systems (Nano-CEMMS) under NSF [0749028]
- U.S. Department of Energy [DEFG02-91-ER45439]
Ask authors/readers for more resources
Asymmetric assembly of nanomaterials has attracted broad Interests because of their unique anisotropic properties that are different from those based on the more widely reported symmetric assemblies. Despite the potential advantages, programmable fabrication of asymmetric structure in nanoscale remains a challenge. We report here a DNA-directed approach for the assembly of asymmetric nanoclusters using Janus nanoparticles as building blocks. DNA-functionalized spherical gold nanoparticles (AuNSs) can be selectively attached onto two different hemispheres of DNA-functionalized Janus nanoparticle (JNP) through DNA hybridization. Complementary and invasive DNA strands have been used to control the degree and reversibility of the assembly process through programmable base-pairing interactions, resulting in a series of modular and asymmetric nanostructures that allow systematic study of the size-dependent assembly process. We have also shown that the attachment of the AuNSs onto the gold surface of the Janus nanoparticle results In red shifting of the UV-vis and plasmon resonance spectra.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available