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Selective excitation of hydrogen doubles the yield and improves the robustness of parahydrogen-induced polarization of low-γ nuclei
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2021-11-10 , DOI: 10.1039/d1cp04153c Andreas B Schmidt 1, 2, 3 , Arne Brahms 4 , Frowin Ellermann 3 , Stephan Knecht 5 , Stephan Berner 1 , Jürgen Hennig 1 , Dominik von Elverfeldt 1 , Rainer Herges 4 , Jan-Bernd Hövener 3 , Andrey N Pravdivtsev 3
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2021-11-10 , DOI: 10.1039/d1cp04153c Andreas B Schmidt 1, 2, 3 , Arne Brahms 4 , Frowin Ellermann 3 , Stephan Knecht 5 , Stephan Berner 1 , Jürgen Hennig 1 , Dominik von Elverfeldt 1 , Rainer Herges 4 , Jan-Bernd Hövener 3 , Andrey N Pravdivtsev 3
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We describe a new method for pulsed spin order transfer of parahydrogen-induced polarization (PHIP) that enables high polarization in incompletely 2H-labeled molecules by exciting only the desired protons in a frequency-selective manner. This way, the effect of selected J-couplings is suspended. Experimentally 1.25% 13C polarization were obtained for 1-13C-ethyl pyruvate and 50% pH2 at 9.4 Tesla.
中文翻译：
氢的选择性激发使产率加倍并提高了低γ核的仲氢诱导极化的稳健性
我们描述了一种用于副氢诱导极化 (PHIP) 的脉冲自旋顺序转移的新方法，该方法通过以频率选择性方式仅激发所需的质子，从而在不完全2 H 标记的分子中实现高极化。这样，选定的J 型联轴器的效果就会暂停。实验上，1- 13 C-丙酮酸乙酯和50% pH 2在9.4特斯拉获得了1.25% 13 C极化。
更新日期：2021-11-30
中文翻译：
氢的选择性激发使产率加倍并提高了低γ核的仲氢诱导极化的稳健性
我们描述了一种用于副氢诱导极化 (PHIP) 的脉冲自旋顺序转移的新方法，该方法通过以频率选择性方式仅激发所需的质子，从而在不完全2 H 标记的分子中实现高极化。这样，选定的J 型联轴器的效果就会暂停。实验上，1- 13 C-丙酮酸乙酯和50% pH 2在9.4特斯拉获得了1.25% 13 C极化。
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