Publication date: Mar 10, 2023
One key bottleneck of solid-state NMR spectroscopy is that ¹H NMR spectra of organic solids are often very broad due to the presence of a strong network of dipolar couplings. We have recently suggested a new approach to tackle this problem. More specifically, we parametrically mapped errors leading to residual dipolar broadening into a second dimension and removed them in a correlation experiment. In this way pure isotropic proton (PIP) spectra were obtained that contain only isotropic shifts and provide the highest ¹H NMR resolution available today in rigid solids. Here, using a deep-learning method, we extend the PIP approach to a second dimension, and for samples of L-tyrosine hydrochloride and ampicillin we obtain high resolution ¹H-¹H double-quantum/single-quantum dipolar correlation and spin-diffusion spectra with significantly higher resolution than the corresponding spectra at 100 kHz MAS, allowing the identification of previously overlapped isotropic correlation peaks.
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File name | Size | Description |
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code.zip
MD5md5:5c30816b8ac9b873259b62dcff1bd991
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48.3 MiB | Python code used to train and use the model and pre-trained model |
experiments.zip
MD5md5:b3daa989fb87d227a24b741be038f675
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4.0 GiB | Experimental datasets on which the model is applied |
2023.41 (version v1) [This version] | Mar 10, 2023 | DOI10.24435/materialscloud:xj-5f |