Lux-Inventa is a project funded by the European Research Council, aimed at developing magneto-optical materials. This is a photoreactive material magnetized by visible light.
The magneto-optical effect is a change in magnetic moment in response to visible light and occurs in a compound called an optical magnet. It was created by pioneers in the field of molecular magnetism: Hashimoto, Miller, Verdagger, Dei. However, the findings were made by Hauser et al. This is the result of an original research project. Photoinduced excitation spin-state trapping (Liesst) effect of octahedral iron (II) complexes showing spin crossover (SCO) behavior.
The magneto-optical effect was explained
The term magneto-optical effect applies to all types of magnetic systems that respond to light: magnetic, paramagnetic, and ferromagnetic and antiferromagnetic. It relies on the observation that absorption of photons by specific parts of the molecular system (magnetophoretic chromophores) can lead to a series of physical events that lead to changes in the spin state. This change in spin state is directly related to changes in magnetization. In other words, the construction of molecular materials based on magneto-optical chromophores results in photomagnets, compounds that are magnetized upon exposure to visible light.
Currently, optical magnets remain lab curiosity as they require expensive liquid helium cooling due to the extremely low temperatures they operate. Therefore, the main purpose of Luxinventa is the design and synthesis of high temperature optical magnets. This is when exposed to visible light, it is reversibly magnetized at the highest possible temperature, preferably reversibly magnetic at room temperature.
LuxInventa: Advances in magneto-optical materials
Photocrystal and magneto-optical research conducted within LuxInventa has expanded beyond the current state of the art. This allows for the identification of high-performance magnetophores: Heptacyanomololybdate(iii) composite anion. Complete experimental and theoretical studies carried out for potassium salts revealed optical switches in the solid state. This transformation induces changes in spin states and magnetization, paving the way for the development of new classes of photo-capable high-temperature and nanomagnets. The manuscript has a ChemRXIV repository accumulated.
Trip
One of the peak achievements of the Lux-Inventa Research team was the rational design and successful separation of a completely new and very simple organic molecule called Tripak. The unique redox properties of Tripak allow for separation in five different valence states, containing up to six additional electrons. These states can be reached by applying small potentials to allow electrical exchange between completely different characteristics. The unique combination of vastly different physical properties surrounded by Tripak’s compact and elegant molecular framework makes it extremely versatile for applications ranging from quantum technology and energy storage to molecular sensing. These results are from the Cell Press Journal Chem. It was published as an open access research article.
Furthermore, the unique physicochemical features of Tripak improved the possibility of further chemical adjustments and modifications in further investigation of other derivatives with similar properties.
Major advances: Extended restrictions
Although the goal of achieving room temperature photomagnetic properties has not yet been achieved, the Lux-Inventa project has already pushed the limits of photomagnets to the applicable temperature range, demonstrating a completely new optical switching mechanism based on reversible photo-separation reactions occurring in the solid state.
Furthermore, the search for new organic molecules suitable for observation of charge transfer-induced magneto-optical switching has resulted in unique and very simple Tripad molecules that appear to be a very versatile platform for the construction of entirely new magnetic coordination polymers.
Acknowledgments
The publication of this article is funded under the Strategic Programme Excellence Initiative at the University of Jagielonia.
This article will also be featured in the 23rd edition of Quarterly Publication.
Source link
