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Supramolecular photocatalysts, which consist of redox photosensitizer and catalyst units, have recently attracted attention in the field of artificial photosynthesis. Aiming to construct a durable ...

Vinylene or ethynylene linkers in the bridging ligands of photofunctional multinuclear complexes synthesized by various coupling reactions, such as the Mizoroki-Heck reaction, olefin metathesis, and Sonogashira coupling, were successfully converted to their corresponding saturated carbon chains using photochemical hydrogenation, which proceeded in an MeCN-pyridine-CF3COOH (3:1:0.1 v/v/v) mixed solution containing the starting metal complexes and 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole (BIH) as a sacrificial electron donor under visible light irradiation in high yields. Hydrogenation of linkers in a Ru2-Re trinuclear complex improved the photocatalytic ability for CO2 reduction.

We report an efficient synthetic approach for well-designed organic-bridged alkoxysilanes, which allow the formation of highly functional organosilica hybrids under mild sol–gel conditions. A series of molecular building blocks containing a triisopropoxysilyl group were synthesized and used in cross-coupling reactions. The triisopropoxysilyl group showed a good tolerance for various organic transformations. 1,4-Diketo-3,6-dithienylpyrrolo[3,4-c]pyrrole-bridged triisopropoxysilane was successfully prepared, allowing rapid formation of organosilica hybrid without loss of functionality under mildly acidic conditions.

The novel synthetic route for the synthesis of building blocks containing triisopropyloxysilyl groups is based on the sequential reaction of substrates (I) with trichlorosilane and 2-propanol.