通过晶体物质的固态机械化学非晶化制备的玻璃态基质的动态核极化。
Dynamic nuclear polarization of a glassy matrix prepared by solid state mechanochemical amorphization of crystalline substances.
作者信息
Elisei E, Filibian M, Carretta P, Colombo Serra S, Tedoldi F, Willart J F, Descamps M, Cesàro A
机构信息
Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy.
出版信息
Chem Commun (Camb). 2015 Feb 7;51(11):2080-3. doi: 10.1039/c4cc08348b. Epub 2014 Dec 23.
PMID:25534192
Abstract
A mechanochemical "solvent-free" route is presented for the preparation of solid samples ready to be employed in the Dynamic Nuclear Polarization (DNP). (1)H-DNP build-up curves at 3.46 T as a function of temperature and radical concentration show steady state nuclear polarization of 10% (0.5% TEMPO concentration at 1.75 K).
摘要
本文提出了一种机械化学“无溶剂”路线，用于制备可用于动态核极化（DNP）的固体样品。在3.46 T下，作为温度和自由基浓度函数的（1）H-DNP积累曲线显示，在1.75 K时，稳态核极化率为10%（TEMPO浓度为0.5%）。
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