Pressure sensor via optical detection based on a 1D spin transition coordination polymer
(2015) Sensors — Vol. 15, p. 2388-2398 (2015)
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- We have investigated the suitability of using the 1D spin crossover coordination polymer [Fe(4-(2’-hydroxyethyl)-1,2,4-triazole)3]I2·H2O, known to crossover around room temperature, as a pressure sensor via optical detection using various contact pressures up to 250 MPa. 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. The pressure (P)-temperature (T) phase diagram calculated for this compound has been used to obtain the P-T bistability region.
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Jureschi, C. M., Linares, J., Rotaru, A., Ritti, M. H., Parlier, M., DÎrtu, M. M., Wolff, M. J., & Garcia, Y. (2015). Pressure sensor via optical detection based on a 1D spin transition coordination polymer. Sensors, 15, 2388-2398. https://doi.org/10.3390/s150202388 (Original work published 2015)