BEGIN:VCALENDAR VERSION:2.0 PRODID:icalendar-ruby CALSCALE:GREGORIAN METHOD:PUBLISH BEGIN:VTIMEZONE TZID:Europe/Vienna BEGIN:DAYLIGHT DTSTART:20200329T030000 TZOFFSETFROM:+0100 TZOFFSETTO:+0200 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3 TZNAME:CEST END:DAYLIGHT BEGIN:STANDARD DTSTART:20191027T020000 TZOFFSETFROM:+0200 TZOFFSETTO:+0100 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10 TZNAME:CET END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260404T053034Z UID:5df8e56112985918444343@ist.ac.at DTSTART:20200127T090000 DTEND:20200127T100000 DESCRIPTION:Speaker: Erwin Reisner\nhosted by Maria Ibanez\nAbstract: Semi- artificial photosynthesis interfaces biological catalysts with synthetic m aterials to overcome limitations in natural and artificial photosynthesis. 1 This presentation will summarise my groups progress in integrating bioca talysts in bespoke hierarchical 3D electrode scaffolds and photoelectroche mical circuits.2 I will first discuss the fundamental insights gained into the function of water oxidising Photosystem II\, where (i) unnatural char ge transfer pathways have been revealed at the enzyme-electrode interface\ , and (ii) O2 reduction that short-circuits the water-oxidation process.3- 5The wiring of Photosystem II to a H2 evolving hydrogenase or a CO2 reduci ng formate dehydrogenase has subsequently enabled the in vitro re-engineer ing of natural photosynthetic pathways using semi-artificial Z-scheme arch itectures.6-9 In contrast to natural photosynthesis\, these hybrid systems allow panchromic light absorption by using complementary biotic and abiot ic light absorbers. The underlying photoelectrochemical circuit provides e ffective electronic communication without losses to competing side-reactio ns. Progress in the integration of robust live cyanobacteria in 3D structu red electrodes will also be discussed.10References(1) Kornienko et al.\, N ature Nanotech.\, 2018\, 13\, 890899(2) Mersch et al.\, J. Am. Chem. Soc.\ , 2015\, 137\, 85418549(3) Zhang and Reisner\, Nature Rev. Chem.\, 2020\, in press.(4) Zhang et al.\, Nature Chem. Biol.\, 2016\, 12\, 10461052(5) K ornienko et al.\, J. Am. Chem. Soc.\, 2018\, 140\, 1792317931(6) Sokol et al.\, Nature Energy\, 2018\, 3\, 944951(7) Nam et al.\, Angew. Chem. Int. Ed.\, 2018\, 57\, 1059510599(8) Sokol et al.\, J. Am. Chem. Soc.\, 2018\, 140\, 1641816422(9) Miller et al.\, Angew. Chem. Int. Ed.\, 2019\, 58\, 46 014605(10) Zhang et al.\, J. Am. Chem. Soc.\, 2018\, 140\, 69 LOCATION:Mondi Seminar Room 2\, Central Building\, ISTA ORGANIZER:tguggenb@ist.ac.at SUMMARY:Erwin Reisner: Interfacing biocatalysts with synthetic materials fo r semi-artificial photosynthesis URL:https://talks-calendar.ista.ac.at/events/2486 END:VEVENT END:VCALENDAR