Directional Photonic Wire Mediated by Homo-Forster Resonance Energy Transfer on a DNA Origami Platform.

ABSTRACT: Elaborating efficient strategies and deepening the understanding of light transport at the nanoscale is of great importance for future designs of artificial light-harvesting assemblies and dye-based photonic circuits. In this work, we focus on studying the phenomenon of Förster resonance energy transfer (FRET) among fluorophores of the same kind (homo-FRET) and its implications for energy cascades containing two or three different dye molecules. Utilizing the spatial programmability of DNA origami, we arranged a chain of cyanine 3 (Cy3) dyes flanked at one end with a dye of lower excitation energy, cyanine 5 (Cy5), with or without an additional dye of higher excitation energy, Alexa488, at the other end. We characterized the response of our fluorophore assemblies with bulk and single-molec

SUBMITTER: Nicoli F 

PROVIDER: S-EPMC6546591 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature