Table 2

Physico-chemical properties of PBH-capped AuNPs (100 μg/ml) under different conditions over time
Milli-Q water EMEM/S+ EMEM/S-
T0 T24 T0 T0 T24 T0 T24
AuNP Sizea Size Zetab Size Size Size Size
nm nm mV nm nm nm nm
Au[(Gly-Trp-Met)2B] 148 ± 2 148 ± 1 −31.6 ± 2.0 242 ± 4 243 ± 6 233 ± 15 1,239 ± 26
Au[(Gly-Tyr-TrCys)2B] 143 ± 1 143 ± 1 −37 ± 1.4 261 ± 1 261 ± 2 251 ± 15 195 ± 2
Au[(Gly-Tyr-Met)2B] 591 ± 73 507 ± 65 −36 ± 1.1 987 ± 205 987 ± 207 407 ± 21 1,230 ± 8
161 ± 5 150 ± 12 203 ± 13 201 ± 9
Au[(Met)2B] 229 ± 23 228 ± 10 −39 ± 1.1 190 ± 13 190 ± 4 1568 ± 28 1,368 ± 25
38 ± 6 40 ± 3 27 ± 9 28 ± 3
Au[(TrCys)2B] 205 ± 1 205 ± 1 −43.2 ± 1.1 261 ± 3 260 ± 4 271 ± 23 908 ± 23
97 ± 3

T0 represents measurements directly after preparation and T24 measurements 24 h after incubation under cell exposure conditions (37°C, 5% CO2). Average values of three independent measurements are presented (mean ± SD). Bold emphasis is used to signal the most stable AuNP; DLS, dynamic light scattering. aHydrodynamic size (Size); bzeta potential (Zeta) of AuNPs in Milli-Q water.

Connolly et al.

Connolly et al. Nanoscale Research Letters 2013 8:315   doi:10.1186/1556-276X-8-315

Open Data