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ABSTRACT: Putting the DNA in dendrimers: A strategy to swiftly prepare DNA dendrimers based solely on DNA self-assembly is presented. This technique produces highly pure DNA dendrimers with an excellent yield of high generation dendrimers. The incorporation of molecular motors (i-motifs) into the DNA dendrimers allows for a change in size (up to 30%) in response to changing pH values.
Angewandte Chemie International Edition 10/2012; · 13.45 Impact Factor
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ABSTRACT: We report a general approach to bimodify gold nanoparticles (GNPs) with two different DNA strands via DNA template reaction. Two thioctic acid modified DNA strands, one at 5' end and one at 3' end, were attached to GNPs through bivalent thiol-gold bond. By sequence design, assemblies of 5 nm GNPs chains, 10 nm GNPs chains and alternative arrangement of 5 and 10 nm GNPs could be achieved. Gel electrophoresis, transmission electron microscope (TEM), UV-vis spectra were used to characterize the assemblies. It is believed that this new kind of bimodified GNPs with two different DNA strands at different ends would enrich the toolbox of DNA-GNP conjugates and provide diverse selectivity for further assembly.
Langmuir 01/2012; 28(4):1966-70. · 4.19 Impact Factor
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ABSTRACT: We report a new strategy to prepare DNA mono-modified gold nanoparticles (AuNPs). By adding a short rigid duplex proximal to the AuNPs, the assembly efficiency of DNA mono-modified AuNPs with Y-shaped DNA could be improved nearly 6-fold.
Chemical Communications 05/2011; 47(20):5774-6. · 6.17 Impact Factor
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Advanced Materials 03/2011; 23(9):1116. · 13.88 Impact Factor
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Advanced Materials 12/2010; 23(9):1117-21. · 13.88 Impact Factor
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Angewandte Chemie International Edition 10/2009; 48(41):7660-3. · 13.45 Impact Factor
