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Quantum mechanical tunneling of the direction of magnetization is discussed for several examples of single-molecule magnets (SMM's). Magnetization tunneling is described for two crystallographically…
High-spin molecules: [Mn12O12(O2CR)16(H2O)4]
The syntheses and electrochemical and magnetochemical properties of [Mn 12 O 12 (O 2 CPh) 16 (H 2 O) 4 ] (3), its solvate 3.PhCOOH-CH 2 Cl 2 , and [Mn 12 O 12 (O 2 CMe) 16 (H 2 O) 4 ].MeCOOH-3H 2 O…
Exchange-biased quantum tunnelling in a supramolecular dimer of single-molecule magnets
A supramolecular SMM dimer in which antiferromagnetic coupling between the two components results in quantum behaviour different from that of the individual SMMs, suggesting a means of tuning the quantum tunnelling of magnetization in SMMs.
The Drosophila of single-molecule magnetism: [Mn12O12(O2CR)16(H2O)4].
This tutorial review will survey the various chemical studies that have been carried out to date on this family of SMMs, and include a discussion of methods that have be developed for their structural and redox transformation, and the effect of the latter on the magnetic and SMM properties.
On-chip SQUID measurements in the presence of high magnetic fields
- Lei Chen, W. Wernsdorfer, C. Lampropoulos, G. Christou, I. Chiorescu
- 21 July 2010
A low temperature measurement technique and the magnetization data of a quantum molecular spin is reported, by implementing an on-chip SQUID technique that enables SQUID magnetometry in high magnetic fields, up to 7 T.
Giant single-molecule magnets: a [Mn84] torus and its supramolecular nanotubes.
- A. Tasiopoulos, A. Vinslava, W. Wernsdorfer, K. Abboud, G. Christou
- ChemistryAngewandte Chemie
- 13 April 2004
The discovery that individual molecules can function as magnets provided a new, ‘bottom-up’ approach to nanoscale magnetic materials, and such molecules have since been ____________________ [*] Prof.…
Synthetic model of the asymmetric [Mn3CaO4] cubane core of the oxygen-evolving complex of photosystem II
- S. Mukherjee, Jamie A. Stull, G. Christou
- ChemistryProceedings of the National Academy of Sciences
- 30 January 2012
Comparison of the X-ray absorption data with those for the OEC reveal 1 to possess structural parameters that make it a close structural model of the asymmetric-cubane OEC unit, which opens up a new front in the multidisciplinary study of the properties and function of this important biological unit.
High-Spin Molecules: Unusual Magnetic Susceptibility Relaxation Effects in [Mn12O12(O2CEt)16(H2O)3] (S = 9) and the One-Electron Reduction Product (PPh4)[Mn12O12(O2CEt)16(H2O)4] (S = 19/2)
The electronic structure of Mn in oxides, coordination complexes, and the oxygen-evolving complex of photosystem II studied by resonant inelastic X-ray scattering.
It is proposed to explain the shift of the K pre-edge absorption energy upon Mn oxidation in terms of the effective number of 3d electrons (fractional 3d orbital population).
Magnetic field dependent transport through a Mn4 single-molecule magnet
We present a preliminary study of the single-electron transport response of a Mn4 single-molecule magnet in which pyridyl-alkoxide groups have been added to electrically protect the magnetic core and…