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. Author manuscript; available in PMC: 2011 Dec 28.
Published in final edited form as: ACS Nano. 2010 Nov 2;4(12):7151–7160. doi: 10.1021/nn101643u

Table 1.

Average nanoparticle size determined by TEM, average hydrodynamic diameter obtained by DLS, zeta potential, and corresponding R2 relaxation values.

Samples PVP:Fe(CO)5 Core size (nm) HD size (nm) Zeta potential (mV) R2 (mM−1s−1)
PVP-IO-8 1:6 7.6 ± 1.3 32.2 ± 2.2 12.7 ± 0.9 173.37
PVP-IO-23 1:7.5 23.4 ± 4.6 70.7 ± 3.5 11.9 ± 1.2 203.86
PVP-IO-37 1:12 36.8 ± 4.0 102.4 ± 6.2 13.7 ± 1.1 239.98
PVP-IO-65 1:15 65.3 ± 9.6 118.3 ± 12.0 12.5 ± 0.8 248.89
Feridex - 4.8 ± 1.9 58.5 ± 185.8 −25.0 ± 1.3 127.48