@article{tong_voltage-induced_2021,

title = {Voltage-Induced Bistability of Single Spin-Crossover Molecules in a Two-Dimensional Monolayer},

author = {Yongfeng Tong and Massine Kelaï and Kaushik Bairagi and Vincent Repain and Jérôme Lagoute and Yann Girard and Sylvie Rousset and Marie-Laure Boillot and Talal Mallah and Cristian Enachescu and Amandine Bellec},

url = {https://pubs.acs.org/doi/10.1021/acs.jpclett.1c03271},

doi = {10.1021/acs.jpclett.1c03271},

issn = {1948-7185, 1948-7185},

year  = {2021},

date = {2021-11-01},

urldate = {2024-11-16},

journal = {The Journal of Physical Chemistry Letters},

volume = {12},

number = {45},

pages = {11029–11034},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{kelai_thermal_2021,

title = {Thermal Bistability of an Ultrathin Film of Iron(II) Spin-Crossover Molecules Directly Adsorbed on a Metal Surface},

author = {Massine Kelai and Vincent Repain and Arthur Tauzin and Weibin Li and Yann Girard and Jérôme Lagoute and Sylvie Rousset and Edwige Otero and Philippe Sainctavit and Marie-Anne Arrio and Marie-Laure Boillot and Talal Mallah and Cristian Enachescu and Amandine Bellec},

url = {https://pubs.acs.org/doi/10.1021/acs.jpclett.1c01366},

doi = {10.1021/acs.jpclett.1c01366},

issn = {1948-7185, 1948-7185},

year  = {2021},

date = {2021-07-01},

urldate = {2024-11-16},

journal = {The Journal of Physical Chemistry Letters},

volume = {12},

number = {26},

pages = {6152–6158},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{kelai_robust_2021,

title = {Robust magnetic anisotropy of a monolayer of hexacoordinate Fe( <span style="font-variant:small-caps;">ii</span> ) complexes assembled on Cu(111)},

author = {Massine Kelai and Benjamin Cahier and Mihail Atanasov and Frank Neese and Yongfeng Tong and Luqiong Zhang and Amandine Bellec and Olga Iasco and Eric Rivière and Régis Guillot and Cyril Chacon and Yann Girard and Jérôme Lagoute and Sylvie Rousset and Vincent Repain and Edwige Otero and Marie-Anne Arrio and Philippe Sainctavit and Anne-Laure Barra and Marie-Laure Boillot and Talal Mallah},

url = {https://xlink.rsc.org/?DOI=D1QI00085C},

doi = {10.1039/D1QI00085C},

issn = {2052-1553},

year  = {2021},

date = {2021-01-01},

urldate = {2024-11-16},

journal = {Inorganic Chemistry Frontiers},

volume = {8},

number = {9},

pages = {2395–2404},

abstract = {The tris pyrazolyl borate ligand imposes a rigid scaffold around Fe( 

 ii 

 ) ensuring a robust magnetic anisotropy when the molecules assembled as monolayers suffer from the dissymmetric environment of the substrate/vacuum interface. 

 , 

 The measurement of the magnetic anisotropy of [Fevphantom(3,5-(CH 

 3 

 ) 

 2 

 Pz) 

 3 

 BHvphantom 

 2 ], where Pz = pyrazole, in its high spin state ( 

 S = 2) by X-ray Magnetic Circular Dichroism (XMCD) spectroscopy when assembled as an organized monolayer on Cu(111) shows the presence of a hard axis of magnetization (positive axial zero-field splitting – ZFS – parameter 

 D 

 ). Combining magnetization and multifrequency electron paramagnetic resonance spectroscopy on a reference compound, [Fevphantom(3-(Ph)Pz) 

 3 

 BHvphantom 

 2 

 ], of the same family and 

 ab initio 

 wave function based theoretical calculations, we demonstrate that the magnetic anisotropy of the assembled molecules is not affected when they are present at the substrate/vacuum interface. Comparing our results with those of a reported complex having an almost identical FeN 

 6 

 coordination sphere but an easy axis of magnetization (corresponding to a negative 

 D 

 value), we show that the nature of the magnetic anisotropy (easy/hard axis) is governed by the torsion angle ( 

 Ψ 

 ) defined by the relative orientation of the pyrazole five-membered rings to the pseudo three-fold axis of the molecules. The rigidity of the (Pz) 

 3 

 BH tridentate ligands, where the three pyrazole moieties are held by the BH group, allows only very slight changes in the torsion angle even when the molecules are in a dissymmetric environment such as an interface. This is the origin of the robust magnetic anisotropy of this family of compounds.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{zhang_anomalous_2020,

title = {Anomalous Light‐Induced Spin‐State Switching for Iron(II) Spin‐Crossover Molecules in Direct Contact with Metal Surfaces},

author = {Luqiong Zhang and Yongfeng Tong and Massine Kelai and Amandine Bellec and Jérôme Lagoute and Cyril Chacon and Yann Girard and Sylvie Rousset and Marie‐Laure Boillot and Eric Rivière and Talal Mallah and Edwige Otero and Marie‐Anne Arrio and Philippe Sainctavit and Vincent Repain},

url = {https://onlinelibrary.wiley.com/doi/10.1002/anie.202003896},

doi = {10.1002/anie.202003896},

issn = {1433-7851, 1521-3773},

year  = {2020},

date = {2020-08-01},

urldate = {2024-11-16},

journal = {Angewandte Chemie International Edition},

volume = {59},

number = {32},

pages = {13341–13346},

abstract = {Abstract 

 Light‐induced spin‐state switching is one of the most attractive properties of spin‐crossover materials. In bulk, low‐spin (LS) to high‐spin (HS) conversion via the light‐induced excited spin‐state trapping (LIESST) effect may be achieved with a visible light, while the HS‐to‐LS one (reverse‐LIESST) requires an excitation in the near‐infrared range. Now, it is shown that those phenomena are strongly modified at the interface with a metal. Indeed, an anomalous spin conversion is presented from HS state to LS state under blue light illumination for Fe 

 II 

 spin‐crossover molecules that are in direct contact with metallic (111) single‐crystal surfaces (copper, silver, and gold). To interpret this anomalous spin‐state switching, a new mechanism is proposed for the spin conversion based on the light absorption by the substrate that can generate low energy valence photoelectrons promoting molecular vibrational excitations and subsequent spin‐state switching at the molecule–metal interface.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}