Author: Anthony Carter Prof. Annie K Powell Group

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News


October 2024 | Birthday Symposium
We are celebrating Annie Powells 65th birthday with a two day symposium on 4f-chemistry in collaboration with the "4f for future"-CRC. Check out more on our website here.

Flyer containing Information about the event in low resolution.


susceptibility versus temperature graph for the presented Spin-Crossover compound.

September 2024 | Mononuclear Fe(III)-Spin Crossover
This publication reports the study of the spin state of a mononuclear spin crossover (SCO) compound using SQUID magnetometry and Mössbauer spectroscopy in a collaboration between Addis Adaba (Ethiopia), Kaiserslautern and Karlsruhe. The complex exhibits an abrupt SCO transition and open hysteresis between 125 and 152K.
DOI:https://doi.org/10.1039/D4NJ03532A



August 2024 | Book Chapter – 4f SMMs
In this book chapter we describe the development of 4f-based single molecule magnets since their discovery and the strategies on how to obtain high-performance SMMs highlighting the importance of female scientists in the field. Looking forward challenges and opportunities in this research area are outlined, consisting of designing multifunctional SMM-based materials and the necessary multitechnique approaches to characterise them.
DOI:https://doi.org/10.1016/bs.hpcre.2024.07.001

Picture showing the molecular structure of different 4f-Single-Molecule-Magnets.


Gd8

May 2024 | Concept Article – Multitechnique Approach on Various Timescales
In this concept article the importance of combining experiments on various timescales from femtoseconds to seconds in order to understand the behaviour of photoexcited SMMs is highlighted and an outlook given on how to advance research in this area.
DOI:https://doi.org/10.1002/chem.202400977



March 2024 | Efficient MCE in a Gd8 cluster
Here we report an octanuclear gadolinium coordination cluster with essentially uncoupled GdIII ions. This leads to a very efficient magneto caloric effect (MCE) making this compound a candidate as a molecular magnetic refrigerant.
DOI:https://doi.org/10.3390/ijms25010264

Gd8


Fe8Dy12

February 2024 | Rationalisation of exotic spin structures
In this communication we present a study on a nanoscale saddle-shaped Fe8Dy12 cluster with an exotic nested spin structure including toroidal and spin-ice-like contributions and provide insights into the resulting magnetic behaviour.
DOI:10.1039/d3dt04141g



January 2024 | Polyoxometalate-loaded silica particles
In our new paper, we explore the encapsulation of polyoxometalates in mesoporous silica-nanoparticles and printing them on alkene functionalized surfaces for amine-ene immobilization.
DOI:https://doi.org/10.1038/s41598-023-50846-2

POM_Silica