Table 2.

Comparison of size and surface-charge and Quantum yield of CdSe/ ZnS QDs with Different Ligands. Results are expressed as mean ± SD (n=3).

Sample	Zeta potential [a] (mV)	Hydrodynamic diameter (nm)	Quantum yield (%)
ODA-QD	N/A	N/A	56.0
GSH-QD	−23.8±0.71	20.94±1.51	40.7
NAC-QD	−35.3±1.82	28.09±1.20	25.8
DHLA-QD	−26.2±7.18	13.63±0.71	10.6
TP-QD	−34.17±1.00	23.85±2.88	24.9
BUC-QD	−31.83±3.73	21.87±0.73	15.5
MSA-QD	−35.3±1.65	28.15±2.74	23.9
DTT-QD	−3.88±2.31	9.71±0.40	32.7
CYS-QD	+35.27±0.25	15.66±0.95	6.5
PEI-QD	+29.8±0.35	26.72±5.69	53.3

^[a]Zeta potentials were measured within one week of synthesis placing 0.1mg/ mL of QDs in DI water, pH=6.6.