Determination of molecular hydration in solution via changes in magnetic anisotropy.

Determination of molecular hydration in solution via changes in magnetic anisotropy.
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DOI:
10.1039/d3cc00601h
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发表时间:
2023-04-11
期刊:
Chemical communications (Cambridge, England)
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配位化合物的水化行为对于理解它们作为生物显像剂的作用是很重要的。水合作用的测定很困难,已经使用了各种基于光学和核磁共振的技术。在这里,我们使用EPR光谱明确地证明了叔丁基吡啶功能化的ErIII DOTA衍生物与水配位,而它的甲基膦类似物不配位。配位化合物的水化行为对于理解它们作为生物显像剂的作用是很重要的。我们使用EPR来确定羧酸盐PARASHIFT试剂与水配位,而磷酸盐类似物不配位。
The hydration behaviour of coordination complexes is important for understanding their roles as bio-imaging agents. Determination of hydration is difficult, and various optical and NMR-based techniques have been used. Here we use EPR spectroscopy to unambiguously demonstrate that a t-butyl-pyridyl-functionalised ErIII DOTA derivative coordinates water, while its methylphosphinate analogue does not. The hydration behaviour of coordination complexes is important for understanding their roles as bio-imaging agents. We use EPR to determine that a carboxylate PARASHIFT reagent coordinates water while the phosphinate analogue does not.
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