Realizing thermometric control of Cobalt-59 spin-based probes via ligand design
Cobalt-59 is an exemplary nucleus for the design of NMR thermometers through its highly responsive nuclear spin properties such as its temperature-driven chemical shift (Δδ/ΔT) and relaxation dynamics (ΔT1/ΔT and ΔT2/ΔT). Investigated through a series of low-spin d6 Co3+ octahedrally coordination complexes, the temperature dependences of the 59Co nuclear spin properties are readily affected by molecular features such as coordination geometry, ligand identity, and local environmental factors. However, precise control of these thermometric properties (i.e., Δδ/ΔT, ΔT1/ΔT, and ΔT2/ΔT) via ligand ...
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