Complexes of lanthanides, DOTA, Temperature sensitive NMR/MRI lanthanide paramagnetic relaxation probe, The Curie-spin contribution to the paramagnetic relaxation rate enhancements, H-1-NMR, FAST MOLECULAR-DYNAMICS, LANTHANIDES, COMPLEXES, CONFORMATIONAL DYNAMICS, NMR, RESONANCE, EUROPIUM(III), VISCOSITIES, WATER