Cover Picture: Direct Synthesis of Hydrogen Peroxide from Hydrogen and Oxygen by Using a Water-Soluble Iridium Complex and Flavin Mononucleotide (Angew. Chem. Int. Ed. 47/2013)

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Abstract

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A homogeneous catalytic system for the direct synthesis of hydrogen peroxide is presented by S. Fukuzumi and co-workers in their Communication on page 12327 ff. In the presence of an organoiridium complex in combination with flavin mononucleotide (FMN), nontoxic hydrogen and oxygen gases react with each other in water under normal pressure at room temperature to selectively form hydrogen peroxide, a chemical fuel expected to be utilized in future fuel cells.

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A homogeneous catalytic system for the direct synthesis of hydrogen peroxide is presented by S. Fukuzumi and co-workers in their Communication on page 12327 ff. In the presence of an organoiridium complex in combination with flavin mononucleotide (FMN), nontoxic hydrogen and oxygen gases react with each other in water under normal pressure at room temperature to selectively form hydrogen peroxide, a chemical fuel expected to be utilized in future fuel cells.

Mechanochromic Fluorescence

X. R. Jia and co-workers describe in their Communication on page 12268 ff. a single organic molecule containing pyrene and rhodamine B chromophores separated by a peptide spacer that shows tunable multicolored emission on grinding.

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W18O49 Nanowires

In their Communication on page 12332 ff., K. C. Hwang et al. report on photodynamic therapy mediated by W18O49 nanowires, which leads to the complete destruction of solid tumors in mice.

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Enzyme Models

Synthetic ZnII complexes were investigated as models of copper–zinc superoxide dismutase by H. Masuda et al. in their Communication on page 12293 ff. Superoxide undergoes a unique disproportionation reaction in the electrostatic sphere of the complexes.

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