A 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+. The assembled structures improve the selectivity of photoswitching towards the metastable isomer and increase its thermal lifetime.
Figures 4 and 5 have been updated to correct an error introduced when plotting the NMR data in Adobe Illustrator.
SI-2 NMR characterisation spectra for Ligand 1
SI-3 Photoswitching data for Ligand 1
SI-4 NMR characterisation spectra for self-assembled products
SI-5 Diffusion NMR Experiments
SI-6 ESI-MS data for self-assembled structures
SI-7 UV-vis spectra of self-assembled species
SI-8 Photoswitching of self-assembled species
SI-9 Thermal relaxation of [Pd(Z-1)2](BF4)2
SI-10 Single cystral X-ray data
SI-2A NMR data for precursor dibromo-tetrafluoroazobenzene