Speaker
Karol Kołątaj
(Uni Fribourg)
Description
The DNA origami is an excellent breadboard to accommodate and manipulate nanoparticles and small molecules with a nanometer precision. Just recently, an orientation of covalently bound molecules has been realized through stretching the fluorophores incorporated into DNA origami structures.
Here, we utilize this method to produce highly efficient plasmonic system. Investigated photonic nanoantennas were composed of two gold nanoparticles with a single fluorophore in a hot-spot, oriented either parallel or perpendicular to the dimer main axis. We observed that by orienting the dye along this axis we obtained a remarkable 250-fold fluorescence enhancement, fivefold higher than for the other orientation.
Author
Karol Kołątaj
(Uni Fribourg)
Co-authors
Aleksandra Adamczyk
Guillermo Acuna
