Matches in SemOpenAlex for { <https://semopenalex.org/work/W4221158556> ?p ?o ?g. }
Showing items 1 to 86 of
86
with 100 items per page.
- W4221158556 abstract "Photosystems II and I (PSII and PSI) are the reaction centre complexes that drive the light reactions of photosynthesis. PSII performs light-driven water oxidation (quantum efficiencies and catalysis rates of up to 80% and 1000 $e^{-}text{s}^{-1}$, respectively) and PSI further photo-energises the harvested electrons (quantum efficiencies of ~100%). The impressive performance of the light harvesting components of photosynthesis has motivated extensive biological, artificial and biohybrid approaches to re-wire photosynthesis to enable higher efficiencies and new reaction pathways, such as H2 evolution or alternative CO2 fixation. To date these approaches have focussed on charge extraction at the terminal electron quinones of PSII and terminal iron-sulfur clusters of PSI. Ideally electron extraction would be possible immediately from the photoexcited reaction centres to enable the greatest thermodynamic gains. However, this was believed to be impossible because the reaction centres are buried around 4 nm within PSII and 5 nm within PSI from the cytoplasmic face. Here, we demonstrate using in vivo ultrafast transient absorption (TA) spectroscopy that it is possible to extract electrons directly from photoexcited PSI and PSII, using both live cyanobacterial cells and isolated photosystems, with the exogenous electron mediator 2,6-dichloro1,4-benzoquinone (DCBQ). We postulate that DCBQ can oxidise peripheral chlorophyll pigments participating in highly delocalised charge transfer (CT) states after initial photoexcitation. Our results open new avenues to study and re-wire photosynthesis for bioenergy and semi-artificial photosynthesis." @default.
- W4221158556 created "2022-04-03" @default.
- W4221158556 creator A5001606147 @default.
- W4221158556 creator A5026491082 @default.
- W4221158556 creator A5036850889 @default.
- W4221158556 creator A5044532377 @default.
- W4221158556 creator A5050044199 @default.
- W4221158556 creator A5057920276 @default.
- W4221158556 creator A5061648775 @default.
- W4221158556 creator A5074568357 @default.
- W4221158556 creator A5077353813 @default.
- W4221158556 creator A5086305068 @default.
- W4221158556 date "2022-01-31" @default.
- W4221158556 modified "2023-10-16" @default.
- W4221158556 title "Photosynthesis re-wired on the pico-second timescale" @default.
- W4221158556 doi "https://doi.org/10.48550/arxiv.2201.13370" @default.
- W4221158556 hasPublicationYear "2022" @default.
- W4221158556 type Work @default.
- W4221158556 citedByCount "1" @default.
- W4221158556 countsByYear W42211585562023 @default.
- W4221158556 crossrefType "posted-content" @default.
- W4221158556 hasAuthorship W4221158556A5001606147 @default.
- W4221158556 hasAuthorship W4221158556A5026491082 @default.
- W4221158556 hasAuthorship W4221158556A5036850889 @default.
- W4221158556 hasAuthorship W4221158556A5044532377 @default.
- W4221158556 hasAuthorship W4221158556A5050044199 @default.
- W4221158556 hasAuthorship W4221158556A5057920276 @default.
- W4221158556 hasAuthorship W4221158556A5061648775 @default.
- W4221158556 hasAuthorship W4221158556A5074568357 @default.
- W4221158556 hasAuthorship W4221158556A5077353813 @default.
- W4221158556 hasAuthorship W4221158556A5086305068 @default.
- W4221158556 hasBestOaLocation W42211585561 @default.
- W4221158556 hasConcept C121332964 @default.
- W4221158556 hasConcept C123669783 @default.
- W4221158556 hasConcept C155220765 @default.
- W4221158556 hasConcept C161790260 @default.
- W4221158556 hasConcept C181500209 @default.
- W4221158556 hasConcept C183688256 @default.
- W4221158556 hasConcept C184779094 @default.
- W4221158556 hasConcept C185592680 @default.
- W4221158556 hasConcept C188231169 @default.
- W4221158556 hasConcept C206865886 @default.
- W4221158556 hasConcept C24840226 @default.
- W4221158556 hasConcept C32891209 @default.
- W4221158556 hasConcept C55493867 @default.
- W4221158556 hasConcept C62520636 @default.
- W4221158556 hasConcept C65165184 @default.
- W4221158556 hasConcept C75473681 @default.
- W4221158556 hasConcept C80298142 @default.
- W4221158556 hasConcept C87803896 @default.
- W4221158556 hasConcept C95503338 @default.
- W4221158556 hasConceptScore W4221158556C121332964 @default.
- W4221158556 hasConceptScore W4221158556C123669783 @default.
- W4221158556 hasConceptScore W4221158556C155220765 @default.
- W4221158556 hasConceptScore W4221158556C161790260 @default.
- W4221158556 hasConceptScore W4221158556C181500209 @default.
- W4221158556 hasConceptScore W4221158556C183688256 @default.
- W4221158556 hasConceptScore W4221158556C184779094 @default.
- W4221158556 hasConceptScore W4221158556C185592680 @default.
- W4221158556 hasConceptScore W4221158556C188231169 @default.
- W4221158556 hasConceptScore W4221158556C206865886 @default.
- W4221158556 hasConceptScore W4221158556C24840226 @default.
- W4221158556 hasConceptScore W4221158556C32891209 @default.
- W4221158556 hasConceptScore W4221158556C55493867 @default.
- W4221158556 hasConceptScore W4221158556C62520636 @default.
- W4221158556 hasConceptScore W4221158556C65165184 @default.
- W4221158556 hasConceptScore W4221158556C75473681 @default.
- W4221158556 hasConceptScore W4221158556C80298142 @default.
- W4221158556 hasConceptScore W4221158556C87803896 @default.
- W4221158556 hasConceptScore W4221158556C95503338 @default.
- W4221158556 hasLocation W42211585561 @default.
- W4221158556 hasOpenAccess W4221158556 @default.
- W4221158556 hasPrimaryLocation W42211585561 @default.
- W4221158556 hasRelatedWork W15752431 @default.
- W4221158556 hasRelatedWork W2376908 @default.
- W4221158556 hasRelatedWork W31335900 @default.
- W4221158556 hasRelatedWork W31410860 @default.
- W4221158556 hasRelatedWork W32622508 @default.
- W4221158556 hasRelatedWork W33979107 @default.
- W4221158556 hasRelatedWork W35001288 @default.
- W4221158556 hasRelatedWork W4517457 @default.
- W4221158556 hasRelatedWork W617996 @default.
- W4221158556 hasRelatedWork W6294467 @default.
- W4221158556 isParatext "false" @default.
- W4221158556 isRetracted "false" @default.
- W4221158556 workType "article" @default.