Pressure sensor via optical detection based on a 1D spin transition coordination polymer

C.M. Jureschi (1, 2) , J. Linares (3) , A. Rotaru (1) , M.H. Ritti (4) , M. Parlier (4) , M. M. Dîrtu (5) , M. Wolff (5) , Y. Garcia (5)

1 AMNOL - Advanced Materials and Nanotechnology Laboratory [Suceava]
2 LISV - Laboratoire d'Ingénierie des Systèmes de Versailles
3 GEMAC - Groupe d'Etude de la Matière Condensée
4 ONERA - The French Aerospace Lab [Châtillon]
5 IMCN/MOST Institute of Condensed Matter and Nanosciences, Molecules, Solids, Reactivity

We have investigated the suitability to use the 1D spin crossover coordination polymer [Fe(4-(2'-hydroxyethyl)-1,2,4-triazole) 3 ]I 2 ·H 2 O, known to crossover around room temperature, as a sensor via optical detection using various contact pressures up to 250MPa. A dramatic persistent colour change is observed. The experimental data, obtained by calorimetric and Mössbauer measurements, have been used for a theoretical analysis, in the framework of the Ising-like model, of the thermal and pressure induced spin state switching.

Mots clés: optical detection; smart materials; material characterization; spin crossover; pressure sensors

Domaines: Matériaux; Sciences de l'ingénieur [physics]

C.M. Jureschi, J. Linares, A. Rotaru, M.H. Ritti, M. Parlier, et al.. Pressure sensor via optical detection based on a 1D spin transition coordination polymer. 2015. ⟨hal-01111335⟩