title: Nanolayered manganese oxide/poly(4-vinylpyridine) as a biomimetic and very efficient water oxidizing catalyst: toward an artificial enzyme in artificial photosynthesis.
abstract: Nanolayered Mn oxide/poly(4-vinylpyridine) as a model for Mn cluster in photosystem II was synthesized and characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FTIR) and UV-Visible spectroscopy (UV-Vis). The compound is a very efficient water oxidizing catalyst, and sizable oxygen evolution was detected at 50 mV overpotential at near neutral pH. The number is as low as the overpotential is used by nature in photosystem II of cyanobacteria, algae and green plants for similar reactions.
authors: Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran. mmnajafpour@iasbs.ac.ir.
authors: Mohammad Mahdi
authors: MM
authors: Najafpour
authors: Behzad
authors: B
authors: Haghighi
authors: Mohadeseh Zarei
authors: MZ
authors: Ghobadi
authors: Davood Jafarian
authors: DJ
authors: Sedigh
mesh_terms: D040761:Biomimetic Materials / Q000737:chemistry*; D002384:Catalysis; D017895:Manganese Compounds / Q000737:chemistry*; D016877:Oxidants / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D010788:Photosynthesis; D045332:Photosystem II Protein Complex / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D017895:Manganese Compounds; D016877:Oxidants; D010087:Oxides; D045332:Photosystem II Protein Complex; D011145:Polyvinyls; D014867:Water; C019535:poly(4-vinylpyridine); C027424:manganese oxide