Preparation of Gd Complex-Immobilized Silica Particles and Their Application to MRI
Figure 3
Photographs of supernatants of mixtures of NH2/SiO2 particle colloid solutions and TNBS aqueous solutions. The pHs in surface modification with amino groups were (a) 3, (b) 5, (c) 7, (d) 9, and (e) 11.
