Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 130, Issue 1, Pages 6-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja076325y
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Funding
- NCI NIH HHS [R01 CA115531, CA-115531] Funding Source: Medline
- NCRR NIH HHS [RR-02584, P41 RR002584] Funding Source: Medline
- NIBIB NIH HHS [R21 EB004285, R21 EB004285-01, R21 EB004285-02, EB-04285] Funding Source: Medline
- NIDDK NIH HHS [DK-058398, P01 DK058398] Funding Source: Medline
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The chemical exchange saturation transfer (CEST) efficiency for a series Eu3+-based tetraamide complexes bearing p-substituents on a single coordinating pendant arm is highly sensitive to water exchange rates. The CEST effect increases in the order Me < MeO < F -(CO2Bu)-Bu-t < CN << H. These results show that CEST contrast can be modulated by changes in electron density at a single ligating atom, and this forms the basis of creating imaging agents that respond to chemical oxidation and reduction.
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