UiO-66 framework with an encapsulated spin probe: synthesis and exceptional sensitivity to mechanical pressure

UiO-66 framework with an encapsulated spin probe: synthesis and exceptional sensitivity to mechanical pressure Full article

Journal

Physical Chemistry Chemical Physics
ISSN: 1463-9076

Output data

Year: 2023, Volume: 25, Number: 20, Pages: 13846-13853 Pages count : 8 DOI: 10.1039/d3cp01063e

Authors

Poryvaev Artem S. ¹ , Larionov Kirill P. ² , Albrekht Yana N. ¹ , Efremov Alexander A. ^1,3 , Kiryutin Alexey S. ¹ , Smirnova Kristina A. ^1,3 , Evtushok Vasiliy Y. ² , Fedin Matvey V. ^1,3

Affiliations

1	International Tomography Center SB RAS, Institutskaya str. 3a, Novosibirsk, 630090, Russia
2	Boreskov Institute of Catalysis SB RAS, Lavrentiev av. 5, Novosibirsk, 630090, Russia
3	Novosibirsk State University, Pirogova str. 1, Novosibirsk, 630090, Russia

Probes sensitive to mechanical stress are in demand for the analysis of pressure distribution in materials, and the design of pressure sensors based on metal–organic frameworks (MOFs) is highly promising due to their structural tunability. We report a new pressure-sensing material, which is based on the UiO-66 framework with trace amounts of a spin probe (0.03 wt%) encapsulated in cavities. To obtain this material, we developed an approach for encapsulation of stable nitroxide radical TEMPO ((2,2,6,6-tetramethylpiperidin-1-yl)oxyl) into the micropores of UiO-66 during its solvothermal synthesis. Pressure read-out using electron paramagnetic resonance (EPR) spectroscopy allows monitoring the degradation of the defected MOF structure upon pressurization, where full collapse of pores occurs at as low a pressure as 0.13 GPa. The developed methodology can be used in and ex situ and provides sensitive tools for non-destructive mapping of pressure effects in various materials.

Poryvaev A.S. , Larionov K.P. , Albrekht Y.N. , Efremov A.A. , Kiryutin A.S. , Smirnova K.A. , Evtushok V.Y. , Fedin M.V.
UiO-66 framework with an encapsulated spin probe: synthesis and exceptional sensitivity to mechanical pressure
Physical Chemistry Chemical Physics. 2023. V.25. N20. P.13846-13853. DOI: 10.1039/d3cp01063e WOS OpenAlex

Submitted:	Apr 7, 2023
Accepted:	Apr 15, 2023
Published online:	Apr 20, 2023

Web of science:	WOS:000983651900001
OpenAlex:	W4366535418

DB	Citing
OpenAlex	11
Web of science	9