Responsive fluorinated lanthanide probes for 19F magnetic resonance spectroscopy

P. Kanthi Senanayake; Alan M. Kenwright; David Parker; Susanna K. van der Hoorn

doi:10.1039/B705844F

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Chemical Communications

Issue 28, 2007

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Responsive fluorinated lanthanide probes for ¹⁹F magnetic resonance spectroscopy

P. Kanthi Senanayake , Alan M. Kenwright , David Parker and Susanna K. van der Hoorn

Chem. Commun., 2007, 2923-2925

DOI: 10.1039/B705844F
Received 18 Apr 2007, Accepted 07 Jun 2007
First published on the web 21 Jun 2007

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Abstract
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The introduction of CF₃ reporter groups close to the paramagnetic centre in macrocyclic lanthanide(III) complexes allows faster acquisition of ¹⁹F magnetic resonance data, and amplifies chemical shift non-equivalence, as exemplified by the definition of ratiometric chemical shift probes for pH and, in principle, enzyme activity.

Supplementary Info

Selected details of ligand and complex synthesis; equations defining the factors modulating the electron–nuclear interaction and their effect on R ₁ and R ₂ (chemical exchange, dipolar and Curie mechanisms); examples of the use of emission spectroscopy to measure the protonation constant for [LnL ²]/[LnHL ²] (Ln = Eu, Tb)
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Chemical Communications

Responsive fluorinated lanthanide probes for ¹⁹F magnetic resonance spectroscopy

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