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Creation of nearly-equivalent nuclear spin singlet states using spin-lock induced crossing
Creation of nearly-equivalent nuclear spin singlet states using spin-lock induced crossing
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机译:使用自旋锁诱导交叉产生几乎等价的核自旋单重态
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摘要
Methods and systems for Nuclear Magnetic Resonance (NMR) spectra of samples having unresolved peaks are described. The methods and systems allow for the creation nuclear spin singlet states in nearly-equivalent spin pairs, for example, using continuous spin-locking with a nutation frequency matched to the coupling strength between spins. The invention relates generally to the field Nuclear Magnetic Resonance (NMR). Nuclear magnetic resonance (NMR) spectroscopy can be used as a tool for determining the chemical structure and/or geometry of a molecule in a sample. In many samples, however, resonance frequencies of different nuclei fully or partially overlap, which makes chemical identification of molecule(s) in a sample difficult or impossible.
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