Visible-Light-Responsive Self-Assembled Complexes: Improved Photoswitching Properties by Metal Ion Coordination

Angew Chem Int Ed Engl. 2022 Aug 16:e202205701. doi: 10.1002/anie.202205701. Online ahead of print.ABSTRACTA photoswitchable ligand based on azobenzene is self-assembled with palladium(II) ions to form a [Pd2 (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.PMID:35972841 | DOI:10.1002/anie.202205701
Source: Angewandte Chemie - Category: Chemistry Authors: Source Type: research