The influence of the sample dispersion on a solid surface in the thermal spin transition of [Fe(pz)Pt(CN)4] nanoparticles

Teresa Delgado; Cristian Enachescu; Antoine Tissot; Laure Guénée; Andreas Hauser; Céline Besnard

doi:10.1039/C8CP00775F

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The influence of the sample dispersion on a solid surface in the thermal spin transition of [Fe(pz)Pt(CN)₄] nanoparticles†

Teresa Delgado,^a Cristian Enachescu,*^b Antoine Tissot,^c Laure Guénée,^d Andreas Hauser^a and Céline Besnard

*^d

Author affiliations

* Corresponding authors

^a Départment de Chimie Physique, Université de Genève, 30 Quai Ernest Ansermet, CH-1211 Genève, Switzerland

^b Faculty of Physics, “Alexandru Ioan Cuza” University, 11 Blvd. Carol I, Iasi, Romania
E-mail: cristian.enachescu@uaic.ro

^c Institut des Matériaux Poreux de Paris, FRE 2000 CNRS, Ecole Normale Supérieure, Ecole Supérieure de Physique et de Chimie Industrielle de Paris, PSL Research University, 75005 Paris, France

^d Laboratoire de Cristallographie, Université de Genève, 24 Quai Ernest Ansermet, CH-1211 Genève, Switzerland
E-mail: celine.besnard@unige.ch

Abstract

The thermal spin transition of [Fe(pz)Pt(CN)₄], pz = pyrazine, nanoparticles is compared with the one of the microcrystalline powder by magnetic susceptibility measurements, absorption spectroscopy and X-ray powder diffraction (XRPD) using synchrotron radiation. The thermal transition shows less cooperativity when decreasing the size due to the reduction of cluster formation. Surprisingly, the dispersion of the nanoparticles on a surface entails important effects on the spin crossover properties of the system. These effects are simulated and explained within the framework of the mechanoelastic model.

This article is part of the themed collection: 2018 PCCP HOT Articles

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Article information

DOI: https://doi.org/10.1039/C8CP00775F
Article type: Paper
Submitted: 02 Feb 2018
Accepted: 12 Apr 2018
First published: 17 Apr 2018

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Phys. Chem. Chem. Phys., 2018,20, 12493-12502

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The influence of the sample dispersion on a solid surface in the thermal spin transition of [Fe(pz)Pt(CN)₄] nanoparticles

T. Delgado, C. Enachescu, A. Tissot, L. Guénée, A. Hauser and C. Besnard, Phys. Chem. Chem. Phys., 2018, 20, 12493 DOI: 10.1039/C8CP00775F

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