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Thursday October 25: Seminar by Shota Atsumi, Department of Chemistry, University of California at Davis

"Global metabolic rewiring for improved CO2 fixation and chemical production"

Time: 16:00 - Please note the unusual time!

Place: Seminar room, Ångström laboratory House 7, floor 1

Information:

An increased understanding of system properties underlying cellular networks enables us to construct novel systems by assembling the components and the control systems into new combinations. Dr Atsumi’s research group are applying this approach to the field of metabolic engineering, which strives for the optimization of desired properties and functions, such as the production of valuable biochemicals. The production of valuable chemicals from microorganisms suites to solve some significant challenges, such as converting renewable feedstocks into energy-rich biofuels. Currently, the main focus of his research is  eveloping synthetic organisms capable of converting CO2 directly to biofuels.

Monday November 5: CAP meeting

Time: 9:00 - 16:30 approximately

Place: Ångström lab, House 7, floor 1.

Agenda: 

tba


Previous news and events


The First European Congress on Photosynthesis Research was a success!

Over 400 delegates from Europe, and all over the world, discussed recent findings in natural and artificial photosynthesison June 25 - 28, 2018. To see what it was all about, go to the conference homepage: ePS1.org

One of our prominent invited speakers, Junko Yano from Lawrence Berkeley National Laboratory, was interviewed in Swedish national radio. You can listen to the program here (mostly in Swedish).


The CAP workshop 2018

Our annual workshop was held at Sigtunahöjden in Sigtuna, on April 26-27. Thanks for all the interesting presentations everyone, you made the workshop great!

Participants on the CAP workshop in Sigtuna, basking in the April sun.

An osprey was seen flying past the workshop venue.



Previous seminars

Wednesday June 20, 2018, a talk was given by Wolfgang Lubitz, Max-Planck-Insttute of chemical energy conversion, Mülheim, Germany.Title: "Structure and function of [NiFe] hydrogenases probed by spectroscopic and electrochemical techniques."Abstract: Hydrogenases catalyze the reversible heterolytic splitting of H2 at binuclear (NiFe or FeFe) metal centers. Understanding how these enzymes achieve their highg efficiencies is key to developing molecular catalysts for H2 conversion and production. To shed light on the catalytic cycles of these enzymes, intermedates are trapped and characterized by electrochemical and spectroscopic methods, using mostly vibrational spectroscopy and magnetic resonance techniques. The obtained parameters are verified by DFT calculations. The [NiFe] hydrogenases are quite well understood; important results are briefly reviewed. The field of [FeFe] hydrogenases has recently been revolutionized by the discovery of artificial maturation. The focus of this lecture will therefore be on these enzymes.


Wednesday May 16, 2018, a talk was given by Yogi Surendranath, Paul M. Cook Career Development Assistant Professor, Department of Chemistry, MIT

Title: "Bridging Molecular and Heterogeneous Electrocatalysis Through Graphite Conjugation"

Abstract: The efficient interconversion of electrical and chemical energy requires catalysts capable of accelerating complex multi-electron reactions at electrified interfaces. These reactions can be carried out at the metallic surface sites of heterogeneous electrocatalysts or via redox mediation at molecular electrocatalysts. Molecular catalysts yield readily to synthetic alteration of their redox properties and secondary coordination sphere, permitting systematic tuning of their activity and selectivity. Similar control is difficult to achieve with heterogeneous electrocatalysts because they typically exhibit a distribution of active site geometries and local electronic structures, which are recalcitrant to molecular-level synthetic modification. However, metallic heterogeneous electrocatalysts benefit from a continuum of electronic states which distribute the redox burden of a multi-electron transformation, enabling more efficient catalysis. We have developed a simple synthetic strategy for conjugating well-defined molecular catalyst active sites with the extended states of graphitic solids. Electrochemical and spectroscopic data indicate that these graphite-conjugated catalysts do not behave like their molecular analogues, but rather as metallic active sites with molecular definition, providing a unique bridge between the traditionally disparate fields of molecular and heterogeneous electrocatalysis.


Last updated August 22, 2018