期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 4, 期 23, 页码 4172-4176出版社
AMER CHEMICAL SOC
DOI: 10.1021/jz402261h
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资金
- French Ministry of Research [ANR-12-BSV5-0003]
- NIH [1R01EB016045-01A]
- Agence Nationale de la Recherche (ANR) [ANR-12-BSV5-0003] Funding Source: Agence Nationale de la Recherche (ANR)
When working with hyperpolarized species, it is often difficult to maintain a stable level of magnetization over consecutive experiments, which renders their detection at the trace level cumbersome, even when combined with chemical exchange saturation transfer (CEST). We report herein the use of ultrafast Z-spectroscopy as a powerful means to detect low concentrations of Xe-129 NMR-based sensors and to measure the in out xenon exchange. Modifications of the original sequence enable a multiplexed detection of several sensors, as well as the extraction of the exchange buildup rate constant in a single-shot fashion.
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