Supramolecular activation of a molecular photocatalyst

Pfeffer, Michael; Pehlken, Christian; Staehle, Robert; Sorsche, Dieter; Streb, Carsten; Rau, Sven

doi:10.1039/c4dt00761a

Cited by 29 publications

(34 citation statements)

References 46 publications

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“…With an increasing amount of BNA + , the tpphz‐based signals of Rutpphz shift predominantly (Figure S9). This is in line with similar results obtained by π–π stacking between pyrene and Rutpphz …”

Section: Resultssupporting

confidence: 93%

Coupling Molecular Photocatalysis to Enzymatic Conversion

et al. 2017

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A hetero‐binuclear dyad that contains a ruthenium polypyridyl moiety bound through an aromatic bridging ligand to an organometallic catalytic center has been used for the light‐driven reduction of the N‐benzyl‐3‐carbamoylpyridinium cation, NAD+, and NADP+ to yield the two‐electron‐reduced analog. Direct coupling with enzymatic conversion was proved by using UV/Vis spectroscopy and liquid chromatography, which showed cofactor‐recycling and enzymatic conversion with a turnover number of 350 per photocatalyst. First insights into the complex behavior of the catalytic system under irradiation point towards multiple prerequisites on the molecular as well as on the macroscopic level to generate highly efficient semiartificial photo‐biocatalytic systems for future energy‐storage applications.

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Section: Resultssupporting

confidence: 93%

Coupling Molecular Photocatalysis to Enzymatic Conversion

et al. 2017

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“…However, this is not unprecedented; bending in L1 has also been reported in dinuclear structures bridging Ru(bpy) 2 with AuCl 2 or PdCl 2 . 52 , 53 These complexes had only slightly longer Ru–M distances than what we observe for CuH 2 –RuH 2 : 12.74 Å for Ru–Au and 12.70 Å for Ru–Pd.…”

Section: Resultscontrasting

confidence: 47%

Excited state electron and energy relays in supramolecular dinuclear complexes revealed by ultrafast optical and X-ray transient absorption spectroscopy

et al. 2018

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“…The two molecules with the shorter distance are aligned almost perfectly antiparallel, whereas the neighboring molecules with the longer distance are aligned with an angle of approximately 120°. Similar effects have been observed for related compounds as well . The Pt⋅⋅⋅Pt distances are alternating between 4.86 and 5.49 Å, which indicates no direct Pt⋅⋅⋅Pt interaction in the solid state.…”

Section: Figuresupporting

confidence: 79%

Photocatalytic Generation of Hydrogen Using Dinuclear π‐Extended Porphyrin–Platinum Compounds

Lang

Habermehl

Troyanov

et al. 2018

Chemistry A European J

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A series of heterodinuclear complexes, M-1-PtX with M=H , Zn, Cu or Co, X=Cl or I, has been synthesized, and first results on their photocatalytic activity in visible light driven proton reduction are presented. The compounds are based on a phenanthroline extended meso-tetramesityl-porphyrin bridging ligand (H -1) incorporating different metal centers in the porphyrin moiety, which functions as a photosensitizer unit. The well-known catalytically active PtX fragment resides in the phenanthroline coordination pocket. The synthesis was optimized, compounds were fully characterized and a solid-state structure could be obtained for selected complexes. Photocatalytic studies in acetonitrile/water mixtures using triethylamine as sacrificial electron donor showed that the activity of the complexes depends strongly on the metal center in the porphyrin moiety as well as the halogen ions bound at the platinum(II) center.

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Supramolecular activation of a molecular photocatalyst

Abstract: The effects of the planar aromatic organic molecules anthracene and pyrene on the catalytic performance of the intramolecular hydrogen evolving photocatalyst [Ru(tbbpy)

Cited by 29 publications

References 46 publications

Coupling Molecular Photocatalysis to Enzymatic Conversion

Coupling Molecular Photocatalysis to Enzymatic Conversion

Excited state electron and energy relays in supramolecular dinuclear complexes revealed by ultrafast optical and X-ray transient absorption spectroscopy

Photocatalytic Generation of Hydrogen Using Dinuclear π‐Extended Porphyrin–Platinum Compounds

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