Molecular Magnetic Switches (MMS)

Since 2009, we have been interested in two kinds of MMS :

Both systems can be reversibly switched between two electronic configurations under the application of external stimuli : light, temperature, pressure, electric field, etc.

This switching between two electronic configurations are accompanied by changes in the physical properties : magnetic, optical, dielectric,...

These changes can be drastic in particular for Fe(II) SCO and cyanide-bridged Fe-Co CT complexes.

To learn more , see below or visit www.lescouezec.fr

More Details about our

Charge Transfer switchable complexes

CUBES

redox sxitch + magnetic switch

Since 2016, we have focused our research on MMS cubic molecules. These octametallic M4M'4 cubes are not only beautiful MMS but they also exhibit a remarkable redox behaviour with up to nine reversibly accessible redox states...

Fe4Mn4.png

SQUARES

We can start the story here, in 2009, with a difficult synthesis of a tridentate facial ligand that we obtained at the mg scale... useless ! Luckily the first step in that synthesis was the preparation of a bidentate ligand, bis(N-methyl-imidazolyl)ketone (named bik), that turns out to be very useful for aobtaining MMS...

Fe2Co2-switch.png

More Details about our 

SCO complexes

Polymetallic  SCO complexes

Screenshot 2020-05-19 at 02.38.00.png

Monometallic SCO complexes

Febik-mononuc-SCO.png
 

Oxamate Coordination Chemistry

In this research axis, we more specifically target :

  1. anisotropic magnetic complexes that can show SMM behaviour

  2. magnetic coordination polymers of variable dimensionality

Tipically, two different synthetic strategies are explored :

  1.  serendipity approaches (using wet chemistry approaches and solvothermal syntheses)

  2. rational approach such as the metallo-supramolecular approach

More info in publications

 

Electro-Active Molecules and Materials

1. Electro-active Coordination Polymers

2. Redox Switches and Electrochromism

 

Leonardo Curti

Ph. D. Student

Functionalized

nano-particles

Leonardo.JPG

Anandi Srinivasan

Post-Doc

(ERMMES-EPOM)

Functionalization of nanoparticles with TM complexes

ASR_photo.jpg

©2020  ERMMES