A Bpp-based dinuclear ruthenium photocatalyst for visible light-driven oxidation reactions

Abstract

The photocatalytic oxidation of organic substrates in water using a diruthenium chromophore-catalyst dyad molecule can be tuned by the nature of the bridging ligand.

A biohybrid strategy for enabling photoredox catalysis with low-energy light

“…[44][45][46][47] Energy transfer, which occurs over longer distances, was introduced by conjugating together transition-metal photocatalysts with different excitation energies, which expanded their absorption window. [48][49][50][51][52][53][54][55] Despite the expanded absorption, the low extinction coefficients of the photocatalysts lead to light-limited activity under many conditions. The absorption range was also expanded into the low-energy (near-infrared) region by direct excitation of the 3 MLCT state, and the utility of this scheme was demonstrated on a range of photoredox reactions.…”

The forgotten reagent of photoredox catalysis

“…4a) revealed intense low energy metal-to-ligand charge transfer bands (ε = 5.5 × 10 4 M −1 cm −1 , 490 nm) along with red-shifted emission and increased emission lifetimes. 55,56 While multinuclear transition metal complexes are well known for producing efficient light Frontier Dalton Transactions harvesters, [57][58][59][60] the reported ruthenium(II) complexes were tested as photoredox catalysts for the dehalogenation of 4-bromobenzyl-2-chloro-2-phenylacetate (Fig. 4a).…”

Improved Effect of Metal Coordination on Molecular Oxygen Activation for Selective Aerobic Photooxidation

“…[4][5][6] At present lots of complexes are widely applied as photoredox catalysts for the organic synthesis. [7] Despite the characteristics of high efficiency and easy modification, most of them focus on the utilization of precious or rare metals, [8][9][10][11][12] as well as corrosive additives, [13][14][15] which leads to not only adverse effects on human health but also considerably high manufacturing cost. Therefore, the development of a class of earth-abundant materials as photocatalysts for transforming alcohols selectively under additivefree conditions is highly desirable.…”