3 3 4 dichlorophenyl 1 1 dimethylurea dcmu

All chemicals, including 2,6-dichloro-1,4-benzoquinone (DCBQ, 98%, Sigma Aldrich), 2-(N-morpholino)ethanesulfonic acid (MES, >98%, Alfa Aesar), CaCl₂ (>99%, Sigma Aldrich), MgCl₂ (98%, Fisher Scientific), KCl (99%, Alfa Aesar), glycerol (>99%, VWR Chemicals), KOH (>99%, Sigma Aldrich), betaine (98%, Fisher Scientific), NH₄OH (30%) solution (Fisher Scientific), H₂O₂ (30%) solution (Fisher Scientific), 3’-(3,4-dichlorophenyl)-1’1’-dimethylurea (DCMU, 98%, Alfa Aesar), spinach chlorophyll a (Sigma Aldrich), C₆₀-(N,N-dimethyl pyrrolidinium) idodide (>99% over all isomers, Solaris Chem. Inc.), bovine liver catalase (Sigma Aldrich), bovine erythrocyte superoxide dismutase (Sigma Aldrich), glucose oxidase from Aspergillus niger (Sigma Aldrich), polystyrene beads (Polysciences, Inc.), ITO nanoparticles (Sigma Aldrich) and fluoride-dope tin oxide (FTO) coated glass (Sigma Aldrich) were purchased from commercial suppliers and used without further purification unless otherwise noted. Reagents for the analytical part of the work were of the highest available purity. T. elongatus PSII was kindly provided by Prof William A. Rutherford, from the Imperial College London.