SWITCHCATALYSIS · Switchable catalytic activity of spin crossover materials
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2015-06-01 → 2017-05-31
- EU contribution
- €159,461
- Participants
- 1
- Scheme
- MSCA-IF-EF-ST
Lines connect the coordinator with its partners.
Results in brief
Switchable catalytic activity of spin crossover materials
Spin crossover (SCO) complexes form a large group of thermo-, photo-, magneto-, piezo- and chemo-switchable compounds. Recent achievements allowed their implementation into electronic circuits, MEMS, micro-thermometers, chemical sensors, etc. Most of attention has been paid to changes of physical properties that accompany a spin state switch. The change of the chemical and biochemichal activity of SCO complexes may lead to achievements in the field of molecular switches. Taking into account the changes of electronic and structural characteristics of a material during the molecular SCO, the transition should have a pronounced effect on the chemical reactivity of metallic centres and molecular fragments influenced by them. This means that the spin transition should affect the affinity to molecules interacting with the host both in its volume and on the surface. We aimed to develop catalysts based upon SCO complexes whose activity may be switched by different external stimuli. Understanding the reactivity of transition metal complexes involving multiple spin states is a challenge of experimental and theoretical chemistry. Studies of the catalysis by SCO complexes may give a direct answer about the effect of spin state on the reactivity (catalytic activity) of coordination compounds. This kind of switchable catalysts may be applied when a catalytic reaction is to be started or stopped, a target compound of reaction should be changed from one to another, a stereoselectivity of reaction should be changed, in various biochemical processes. The scientific key question was how the SCO phenomenon affects the catalytic activity. We aimed to develop materials that can display a spin dependent catalytic activity, to understand the mechanisms of the catalysis and spin state role and catalytic reaction. We wanted to test mechanisms that can have the biggest impact in controlling the catalytic activity of switchable materials.
Data: CORDIS, © European Union
Project objective
Spin crossover (SCO) is an intensively studied and highly versatile representative of molecular switches. The change of numerous physical properties during the spin transition has provoked a wide inclusion of SCO materials into various electronic, photonic and mechanical experiments. The main question asked in this project is how the drastic electronic and structural reorganizations accompanying spin transition will influence the catalytic activity of SCO complexes and composites. These studies will cover the redox catalytic activity of SCO molecular complexes, nanoparticles and composites, photocatalytic properties of SCO complexes, catalysis by conjugates with enzymes, and other switchable materials with catalytic activity. The expected results will allow the creation of switchable catalysts and will contribute to the fundamental knowledge on the spin-dependent catalytic activity of metallic centres.This project aims to combine the background of an experienced researcher that works in the domain of spin crossover materials, and the competence of a hosting group that deals with functional nanoparticles including their catalytic and photocatalytic activities. This combination of expertise supported by the facilities of Johannes Gutenberg University will create the optimal conditions for the realization of scientific purposes included in this project and will conduce to the efficient knowledge transfer between the experienced researcher and the host laboratory.
Original text from CORDIS.
Participants
- JOHANNES GUTENBERG-UNIVERSITAT MAINZ · MainzCoordinatorGermany
Links
Data: CORDIS, © European Union