Highly selective base-pairing rules in DNA can be utilized as a tool for assembling nano particles. Holliday Junctions, where two different DNA double strands intersect and replace the complement strand, are an important artificial motif for forming two-dimensional "plane" conformations of DNA. In this study, we controlled the growth of the DNA "plane" conformations by changing the temperature. A set of DNA single chains were cooled from 90°C to 4°C for 10 minutes, to form the DNA "plane" conformation. The influence of the cooling procedure on the DNA conformation was observed by atomic force microscope (AFM). The DNA "plane" conformation is strongly dependent on the cooling process. Further, we assembled gold nano particle using the DNA conformation; then we observed the assembly of gold nano particle on the DNA conformation by transmission electron microscopy (TEM).
- Nano particles
ASJC Scopus subject areas
- Chemical Engineering (miscellaneous)
- Materials Science (miscellaneous)
- Environmental Science(all)
- Polymers and Plastics