Visible‐Light‐Responsive Self‐Assembled Complexes: Improved Photoswitching Properties by Metal Ion Coordination**
Ray G. DiNardi, Anna O. Douglas, Ruoming Tian, Jason R. Price∥, Mohammad Tajik, William A. Donald, Jonathon E. Beves
Abstract
Abstract A photoswitchable ligand based on azobenzene is self‐assembled with palladium(II) ions to form a [Pd 2 ( E ‐ L ) 4 ] 4+ cage. Irradiation with 470 nm light results in the near‐quantitative switching to a monomeric species [Pd( Z ‐ L ) 2 ] 2+ , which can be reversed by irradiation with 405 nm light, or heat. The photoswitching selectivity towards the metastable isomer is significantly improved upon self‐assembly, and the thermal half‐life is extended from 40 days to 850 days, a promising approach for tuning photoswitching properties.
Topics & Concepts
MetalIonVisible spectrumChemistryNanotechnologyMaterials scienceCrystallographyOptoelectronicsOrganic chemistryPhotochromic and Fluorescence ChemistryPhotoreceptor and optogenetics researchSupramolecular Self-Assembly in Materials