J
Jean-François Létard
Researcher at Centre national de la recherche scientifique
Publications - 68
Citations - 2777
Jean-François Létard is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Spin crossover & Spin transition. The author has an hindex of 25, co-authored 68 publications receiving 2589 citations. Previous affiliations of Jean-François Létard include Monash University, Clayton campus & Argonne National Laboratory.
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Journal ArticleDOI
Dynamic interplay between spin-crossover and host-guest function in a nanoporous metal-organic framework material.
Peter D. Southon,Lang Liu,Elizabeth A. Fellows,David J. Price,Gregory J. Halder,Karena W. Chapman,Boujemaa Moubaraki,Keith S. Murray,Jean-François Létard,Cameron J. Kepert +9 more
TL;DR: Through the comprehensive analysis of structure, host-guest properties, and spin-crossover behaviors, it is found that this pillared Hofmann system uniquely displays both guest-exchange-induced changes to spin- crossovers and spinsorption and desorption changes to host- Guernsey properties, with direct dynamic interplay between these two phenomena.
Journal ArticleDOI
Single-crystal to single-crystal structural transformation and photomagnetic properties of a porous iron(II) spin-crossover framework.
Suzanne M. Neville,Gregory J. Halder,Karena W. Chapman,Martin Duriska,Peter D. Southon,John D. Cashion,Jean-François Létard,Boujemaa Moubaraki,Keith S. Murray,Cameron J. Kepert +9 more
TL;DR: Comprehensive structural analyses throughout this transformation, from primitive orthorhombic to body-centered tetragonal (I4/mcm), reveal a flexing of the framework and a dilation of the channels, with an accompanying subtle distortion of the iron(II) coordination geometry.
Journal ArticleDOI
Critical temperature of the LIESST effect in iron(II) spin crossover compounds
Jean-François Létard,L. Capes,L. Capes,Guillaume Chastanet,Nicolás Moliner,Sylvie Létard,José Antonio Real,Olivier Kahn +7 more
TL;DR: In this article, the effect of horizontal and vertical displacements of the LS and HS potential wells has been discussed on the basis of the nonadiabatic multiphonon theory.
Journal ArticleDOI
A Nanoscale Molecular Switch Triggered by Thermal, Light, and Guest Perturbation
Martin Duriska,Suzanne M. Neville,Boujemaa Moubaraki,John D. Cashion,Gregory J. Halder,Karena W. Chapman,Chérif Baldé,Jean-François Létard,Keith S. Murray,Cameron J. Kepert,Stuart Robert Batten +10 more
TL;DR: A discrete metallo-supramolecular nanoball (see picture) uniquely undergoes a solvent-sensitive, physically addressable electronic spin switching that can be switched "on" or "off" by green or red laser irradiation, respectively.
Journal ArticleDOI
Critical temperature of the LIESST effect in a series of hydrated and anhydrous complex salts [Fe(bpp)2]X2
TL;DR: In this paper, the magnetic properties of a series of hydrated and dehydrated spin crossover compounds derived from the 2,6-bis(pyrazol-3-yl)pyridine (bpp) ligand have been reinvestigated and the light-induced crossover studied at 10 K.