Photocatalytic Hydrogen Production from Water Employing A Ru, Rh, Ru Molecular Device for Photoinitiated Electron Collection

Recent Developments in the Application of Phosphorescent Iridium(III) Complex Systems

“…In general, such photochemical set-ups consist of a transition metal photosensitizer combined with an electron relay collecting and storing radiant energy and converting protons into molecular hydrogen. [273,274] Various types of transition metal complexes (e.g., based on Rh I , Ru, II or Pt II ) have been employed as photosensitizers, [275][276][277][278] but in particular heteroleptic iridium(III) complexes have gained attraction in this field due to their highly tunable photophysical properties. [9] Bernhard and co-workers have introduced Ir IIIbased sensitizers featuring remarkable improvements in the production of molecular hydrogen, compared to previously investigated Ru II -based systems.…”

Tuning of photocatalytic activity by creating a tridentate coordination sphere for palladium

“…catalytic efficiency can be tuned. [20][21][22][23][24][25] The intensively studied intramolecular photocatalyst [(tbbpy) 2 Ru(tpphz)PdCl 2 ](PF 6 ) 2 (Fig. 1, Ru(tpphz)PdCl 2 ; tbbpy = 4,4′-di-tert-butyl-2,2′-bipyridine, tpphz = tetrapyrido[3,2-a:2′,3′-c:3″,2″-h:2′′′,3′′′-j]phenazine) is an active hydrogen evolving PDM generating H 2 with a maximum turnover number (TON) of 238.…”

Supramolecular activation of a molecular photocatalyst

“…Recent examples of intramolecular photocatalysts include water oxidation catalysts, water reduction catalysts and carbon dioxide reducing catalysts. [2][3][4][5][6][7][8][9][10][11] In direct comparison with intermolecular [12][13][14][15][16] and heterogeneous photocatalysts, [17][18][19][20] intramolecular photocatalysis, however, often suffer from lower catalytic activity. It is therefore of paramount importance to learn more about the factors determining the catalytic activity of intramolecular photocatalysts.…”