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Monday October 1: CAP meeting

Time: 9:00 - 15:00 approx. 

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

Preliminary agenda:

9:00-9:15    Welcome and information

9.15-10.00  Stefan Nordlund, Department of Biochemistry and Biophysics, Stockholm University:

"Nitrogenase mechanisms – An overview"

10-10.30 Coffee                 

10.30- 11.00   Agneta Norén Department of Biochemistry and Biophysics, Stockholm University:

"Regulation of nitrogen fixation in photosynthetic bacteria"

11.00-11.45   Mun Hon Cheah, Chemistry-Ångström: Title tba 

11.45-13.00 Lunch

13.00 – 13.45 Adam Wegelius, Chemistry-Ångström: 
"Generation of a semisynthetic [FeFe]-hydrogenase in cyanobacteria "

13.45-14.45 Ming-Tian Zhang,  Department of Chemistry, Tsinghua University, Beijing
Title tba


Wednesday October 3: Seminar by Jiayin Yuan, Stockholm university

Time: 15:15 

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

Title: Poly(ionic liquid)s as innovative polyelectrolyte for energy application and beyond

Abstract:

Poly(ionic liquid)s (PILs), also called polymerized/polymeric ionic liquids, refer to an emerging class of polyelectrolytes that are prepared from polymerization of ionic liquids. In such structure configuration, some unique properties of ILs are incorporated into the macromolecular architecture. This in turn expands the property/function window of ionic liquids and traditional polyelectrolytes. Though PILs initially appeared in the IL community to play a merely complementary role towards ILs, the rapid advances in PIL research in the past several years have created a toolbox of innovative and versatile polyelectrolytes, which are of fundamental research importance to polymer community and meanwhile provide material choices and solutions in many other fields. This lecture will highlight energy applications of PILs in diverse forms, for example, PIL nanoparticles as binders for electrodes and as precursors for energy carbons. In addition, the lecture will also highlight the application of PILs in the porous membrane field.


Thursday October 4: Dye-sensitized solar cell mini conference!

Time: 14:15 - 17:00 ca.

Place: Ångström laboratory, lecture hall 80101

Program: 

14:15                 Frederic Sauvage, Université de Picardie Jules Verne, France; 

15:00                Coffee break

15:15                Janne Halme, Aalto University School of Science, Finland;

                           Title: -”Towards highly efficient colored photovoltaics - theoretical limits and practical pathways”  

16:00:               Marina Freitag, Uppsala university;

                         Title: - "Copper complexes in dye-sensitized solar cells" 


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