Figure 5From: A systematic study of core size and coating thickness on manganese-doped nanocrystals for high T2 relaxivity as magnetic resonance contrast agent Photographs of colloidal stability tests and hydrodynamic sizes and zeta-potential values of (a) MnMNC6-PEG1K, (b) MnMNC12-PEG2K on various pH conditions. (pH 2, 4, 7.4 and 9).Back to article page