Accurate Ph Sensing Using Hyperpolarized 129xe NMR Spectroscopy
Chemistry(2018)
摘要
In the search for powerful non-invasive methods for pH measurement, NMR usually suffers from biases, especially for heterogeneous samples or tissues. In this Communication, using the signals of hyperpolarized 129 Xe encapsulated in a pair of water-soluble cryptophanes, we show that a differential pH measurement can be achieved, free from most of these biases, by monitoring the difference between their chemical shifts.
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关键词
cryptophanes,hyperpolarized xenon,NMR spectroscopy,pH mapping,quantum chemistry
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