Pulse EPR, ELDOR (electron-electron double resonance), and ENDOR (electron-nuclear double resonance) techniques are highly effective in the study of paramagnetic systems. Nevertheless, we always strive for better resolution and sensitivity. The latter is particularly important for in-cell measurements. Accordingly, we focus on developments which improves resolution and sensitivity. In terms of hardware, we are constantly improving the sensitivity and performance of our home build W-band spectrometers and our resonators. Additionally, we concentrate on new experiments for sensitivity enhancement employing pulse shaping, polarization transfer, multiple echo collection along with methods for enhancing echo decays and understanding relaxation mechanism. Our efforts are also directed towards resolution enhancement via correlation experiments.
References
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Frequency swept pulses for the enhanced resolution of ENDOR spectra detecting on higher spin transitions of Gd(III) Rogers C. J., Bogdanov A., Seal M., Thornton M. E., Su X. C., Natrajan L. S., Goldfarb D. & Bowen A. M. (2023) Journal of Magnetic Resonance. 351, 107447. DOI: 10.1016/j.jmr.2023.107447
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The effect of spin-lattice relaxation on DEER background decay Seal M., Feintuch A. & Goldfarb D. (2022) Journal of magnetic resonance. 345, 107327. DOI: 10.1016/j.jmr.2022.107327
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The decay of the refocused Hahn echo in double electron–electron resonance (DEER) experiments Bahrenberg T., Jahn S. M., Feintuch A., Stoll S. & Goldfarb D. (2021) Magnetic Resonance. 2, p. 161-173. DOI: 10.5194/mr-2-161-2021
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Triple resonance EPR spectroscopy determines the Mn2+ coordination to ATP Litvinov A., Feintuch A., Un S. & Goldfarb D. (2018) Journal of Magnetic Resonance. 294, p. 143-152. DOI: 10.1016/j.jmr.2018.07.007
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Improved sensitivity for W-band Gd(III)-Gd(III) and nitroxide-nitroxide DEER measurements with shaped pulses Bahrenberg T., Rosenski Y., Carmieli R., Zibzener K., Qi M., Frydrnan V., Godt A., Goldfarb D. & Feintuch A. (2017) Journal of Magnetic Resonance. 283, p. 1-13. DOI: 10.1016/j.jmr.2017.08.003