Title
Reversible Photocontrol of DNA Melting by Visible‐Light‐Responsive F4‐Coordinated Azobenzene Compounds
Author
Katarzyna Matczyszyn, Marta Dudek, Marco Deiana, Ziemowit Pokladek, Krzysztof Pawlik
Year
2018
Journal
Chemistry A European Journal
Abstract
Spatiotemporal control over the regulation of intra‐ and intermolecular motions in naturally occurring systems is systematically studied to expand the toolbox of mechanical operations in multicomponent nanoarchitectures. DNA is ideally suited for programming light‐powered processes based on minimalist molecular design. Herein, we show that the noncovalent incorporation of bistable photoswitches into B‐like DNA moieties enables to trigger the thermal transition midpoint of the duplexes by converting visible light into directed mechanical work by orchestrating the collective actions of the photoresponsive chromophores and the host DNA nanostructures. Besides its practical applications, the resulting hybrid nanosystem bears unique features of modulability, biocompatibility, reversibility and addressability, which are key components for developing molecular photon‐ controlled programmed materials.
Instrument
J-815
Keywords
Circular dichroism, Induced circular dichroism, DNA structure, Ligand binding, Thermal stability, Thermodynamics, Nanostructures, Biochemistry, Materials