Photocatalytic Hydrogen Evolution with a Hydrogenase in a Mediator‐Free System under High Levels of Oxygen

Abstract

Etwas Luft schadet nicht: Eine sauerstofftolerante Hydrogenase kann in Kombination mit einem Farbstoff zur photokatalytischen H2‐Erzeugung eingesetzt werden. Das homogene System bedarf keines Redoxvermittlers und liefert unter Bestrahlung mit sichtbarem Licht auch in Gegenwart von Luft große Mengen an H2.

Optimization of Hydrogen‐Evolving Photochemical Molecular Devices

“…[37] Fort echnical reasons,t he light intensity dependent experiments were not performed in GC vials (5 mL), but in aSchlenk tube (23 mL), which was equipped with one,two,or four LED arrays (l = 470 nm, 30-40 mW cm À2 )t om odulate the light intensity (see Figure S8). As shown in Figure 5, photocatalytic experiments carried out in aS chlenk tube equipped with two LED arrays result in an overall TON of 275, which is close to the value obtained in GC vials (276).…”

Photophysics of BODIPY Dyes as Readily-Designable Photosensitisers in Light-Driven Proton Reduction

“…A plethora of highly active systems based on transition metals containing photosensitizers and water reduction catalysts are known and their photochemical and photophysical behaviour was thoroughly studied [1][2][3]. Recent developments include the implementation of non-noble metal components, or even metal-free compounds into these systems and several groups described the use of classical organic dyes, such as Fluorescein, dyes, such as Fluorescein, porphyrins, or Eosin Y, as photosensitizer species [4][5][6][7][8][9][10][11]. Moreover, in recent years, BODIPY (boron dipyrromethene; IUPAC name: 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene) dyes have also attracted considerable attention as light-harvesting units in inter- [12] and intramolecular [13][14][15][16][17] photocatalyst systems for light-driven proton reduction.…”

Crystal Structure of 1,1′-dimethyl-[4,4′-bipyridine]-1,1′-diium tetrachloridozincate(II), C12H14Cl4N2Zn

“…Viologen and related derivatives have been widely used as templates to construct metal-halide-viologen complexes with various structure types because of their application in biology, electrochemistry and photochemistry [7][8][9][10]. In order to find new organic-inorganic hybrid materials based on methyl viologen (MV), the title compound has been prepared and its crystal structure has also been determined by X-ray single crystal diffractions.…”