Dynamical decoupling in water-glycerol glasses: a comparison of nitroxides, trityl radicals and gadolinium complexes

Soetbeer J, Millen M, Zouboulis K, Hülsmann M, Godt A, Polyhach Y, Jeschke G (2021)
Physical chemistry chemical physics : PCCP.

Zeitschriftenaufsatz | E-Veröff. vor dem Druck | Englisch
 
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Autor*in
Soetbeer, Janne; Millen, Marthe; Zouboulis, Konstantin; Hülsmann, MiriamUniBi; Godt, AdelheidUniBi; Polyhach, Yevhen; Jeschke, Gunnar
Abstract / Bemerkung
Our previous study on nitroxides in o-terphenyl (OTP) revealed two separable decoherence processes at low temperatures, best captured by the sum of two stretched exponentials (SSE) model. Dynamical decoupling (DD) extends both associated dephasing times linearly for 1 to 5 refocusing pulses [Soetbeer et al., Phys. Chem. Chem. Phys., 2018, 20, 1615]. Here we demonstrate an analogous DD behavior of water-soluble nitroxides in water-glycerol glass by using nitroxide and/or solvent deuteration for component assignment. Compared to the conventional Hahn experiment, we show that Carr-Purcell and Uhrig DD schemes are superior in resolving and identifying active dephasing mechanisms. Thereby, we observe a partial coherence loss to intramolecular nitroxide and trityl nuclei that can be alleviated, while the zero field splitting-induced losses for gadolinium labels cannot be refocused and contribute even at the central transition of this spin-7/2 system. Independent of the studied spin system, Uhrig DD leads to a characteristic convex dephasing envelope in both protonated water-glycerol and OTP glass, thus outperforming the Carr-Purcell scheme.
Erscheinungsjahr
2021
Zeitschriftentitel
Physical chemistry chemical physics : PCCP
eISSN
1463-9084
Page URI
https://pub.uni-bielefeld.de/record/2952467

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Soetbeer J, Millen M, Zouboulis K, et al. Dynamical decoupling in water-glycerol glasses: a comparison of nitroxides, trityl radicals and gadolinium complexes. Physical chemistry chemical physics : PCCP. 2021.
Soetbeer, J., Millen, M., Zouboulis, K., Hülsmann, M., Godt, A., Polyhach, Y., & Jeschke, G. (2021). Dynamical decoupling in water-glycerol glasses: a comparison of nitroxides, trityl radicals and gadolinium complexes. Physical chemistry chemical physics : PCCP. https://doi.org/10.1039/d1cp00055a
Soetbeer, J., Millen, M., Zouboulis, K., Hülsmann, M., Godt, A., Polyhach, Y., and Jeschke, G. (2021). Dynamical decoupling in water-glycerol glasses: a comparison of nitroxides, trityl radicals and gadolinium complexes. Physical chemistry chemical physics : PCCP.
Soetbeer, J., et al., 2021. Dynamical decoupling in water-glycerol glasses: a comparison of nitroxides, trityl radicals and gadolinium complexes. Physical chemistry chemical physics : PCCP.
J. Soetbeer, et al., “Dynamical decoupling in water-glycerol glasses: a comparison of nitroxides, trityl radicals and gadolinium complexes”, Physical chemistry chemical physics : PCCP, 2021.
Soetbeer, J., Millen, M., Zouboulis, K., Hülsmann, M., Godt, A., Polyhach, Y., Jeschke, G.: Dynamical decoupling in water-glycerol glasses: a comparison of nitroxides, trityl radicals and gadolinium complexes. Physical chemistry chemical physics : PCCP. (2021).
Soetbeer, Janne, Millen, Marthe, Zouboulis, Konstantin, Hülsmann, Miriam, Godt, Adelheid, Polyhach, Yevhen, and Jeschke, Gunnar. “Dynamical decoupling in water-glycerol glasses: a comparison of nitroxides, trityl radicals and gadolinium complexes”. Physical chemistry chemical physics : PCCP (2021).

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