57Fe Mössbauer study of an iron(II) sensor for the detection of toxic gases at room temperature
(2021) Hyperfine Interactions — Vol. 242, n° 1, p. 23 (2021)
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- Abstract
- We present herein the magnetic and Mössbauer investigation of a colorimetric chemical sensor with the chemical formula [Fe(H2btm)2(H2O)2]Cl2 (1) (H2btm = Di(1H-tetrazol-5-yl)methane). The spectra were recorded before and after sensing a series of toxic gases (MeOH, diethylenetriamine, hexylamine, 1,2-diaminocyclohexane, 3-picolylamine, pyridine and furfurylamine). Worth to note that the sensing process (color changes) proceeds at room temperature, does not require any pretreatment and can be detected as well by the naked eyes. 57Fe Mössbauer spectroscopy not only allows to identify the nature of spin states involved in our Fe(II) sensor but also to evaluate quantitatively the respective spin state population, i.e. high spin and low-spin states.
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Sun, L., Rotaru, A., & Garcia, Y. (2021). 57Fe Mössbauer study of an iron(II) sensor for the detection of toxic gases at room temperature. Hyperfine Interactions, 242(1), 23. https://doi.org/10.1007/s10751-021-01754-2 (Original work published 2021)