Surface nanocrystal hydrogen-bonded complex for photochemical water splitting

Investigation on the photoinduced chemical reaction between p-benzoquinone and tryptophan in homogeneous solution

“…14 As one type of phenolic metabolite, PBQ has been proposed to initiate leukemic chromosomal translocations by acting as a topoisomerase II poison in humans. 15 Moreover, the excited oxygen ( 1 O 2 *, a kind of reactive oxygen species, ROS) can be produced by PBQ under ultraviolet photoirradiation, 16,17 which is associated with human aging, tumours, diabetes and many neurodegenerative diseases. 18 For instance, Raj et al reported that the production rate of ROS increased up to 60% and the cell growth was inhibited in the PBQ environment.…”

Computational Model of Photocatalytic Water Splitting

“…There have been numerous attempts toward the realization of artificial photosynthesis using bioinspired molecular systems; see refs − for reviews. The simplified models of the primary charge-separation system that are closest to the prototypes of nature are hydrogen-bonded supramolecular complexes consisting of a porphyrine-type or phthalocyanine-type electron donor and a quinone-type electron acceptor, either in solution or in a fixed position by hydrogen bonding on a suitable substrate. − …”

“…The simplified models of the primary charge-separation system that are closest to the prototypes of nature are hydrogen-bonded supramolecular complexes consisting of a porphyrine-type or phthalocyanine-type electron donor and a quinone-type electron acceptor, either in solution or in a fixed position by hydrogen bonding on a suitable substrate. [6][7][8][9] In this work, we have investigated the primary step of photoinduced water splitting in a minimal model system consisting of a truncated chlorophyll (Chl), benzoquinone (BQ) and a water wire. The equilibrium geometries of educt and product have been determined with density functional theory (DFT).…”