Single molecular imaging and spectroscopy of conjugated polyelectrolytes decorated on stretched aligned DNA.
DNA is the prototype template for building nanoelectronic devices by self-assembly. The electronic functions are made possible by coordinating electronic polymer chains to DNA. This paper demonstrates two methods for fabrication of aligned and ordered DNA nanowires complexed with conjugated polyelectrolytes (CPEs). The complex can be formed either in solution prior to stretching or after stretching of the bare DNA on a surface. Molecular combing was used to stretch the complexes on surface energy patterned surfaces, and PMMA for the bare DNA. Single molecular spectroscopy, in fluorescence, and microscopy, in atomic force microscopy, give evidence for coordination of the short CPE chains to the aligned DNA.
Björk
Per
P
Biomolecular and Organic Electronics, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden. perbj@ifm.liu.se
Herland
Anna
A
Scheblykin
Ivan G
IG
Inganäs
Olle
O
D004247:DNA / Q000737:chemistry* / Q000648:ultrastructure; D004573:Electrolytes / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D011108:Polymers / Q000737:chemistry*; D013057:Spectrum Analysis; D013314:Stress, Mechanical
D004573:Electrolytes; D011108:Polymers; D004247:DNA