Figure 2

Nanoprobe characterisation.

(a) ¹H NMR spectra for DPC-DTPA. (b) An AFM image of the DPC-DTPA-Gd nanoprobe. (c) Relaxivity (r₁) measurements for DPC-DTPA-Gd (12.96 mM⁻¹s⁻¹), DPC*-DTPA-Gd (10.21 mM⁻¹s⁻¹), DP-DTPA-Gd (8.78 mM⁻¹s⁻¹) and DTPA-Gd (4.57 mM⁻¹s⁻¹).