A responsive europium(III) chelate that provides a direct readout of pH by MRI.
A responsive europium(III) chelate that provides a direct readout of pH by MRI.
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DOI:
10.1021/ja106018n
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发表时间:
2010-10-13
影响因子:
15
通讯作者:
Sherry AD
中科院分区:
文献类型:
--
作者:
Wu Y;Soesbe TC;Kiefer GE;Zhao P;Sherry AD
A europium(III) DO3A-tris(amide) complex is reported for imaging pH by MRI using ratiometric CEST principles. Deprotonation of a single phenolic proton between pH 6 and 7.6 results in an ~5 ppm shift in the water exchange CEST peak that is easily detected by MRI. Collection of two CEST images at two slightly different activation frequencies provides a direct readout of solution pH without the need of a concentration marker.
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