One-Step Synthesis of PEGylated Gold Nanoparticles with Tunable Surface Charge

Table 1

Absorption maximum, fwhm, pH, and Zeta potential values of colloidal AuNPs reduced with different molecular weight PEGs.

Nanoparticles	Absorption maximum (nm)	Fwhm (nm)	pH	Zeta potential (mV)
AuNPs-PEG200	520	50	7,440	−28,2
AuNPs-PEG400	533	51	7,692	−25,5
AuNPs-PEG1500	523	59	7,485	−16,2
AuNPs-PEG4000	522	54	7,795	−12,1
AuNPs-PEG6000	519	49	7,556	−7,72
AuNPs-PEG10000	517	47	7,714	−2,16
AuNPs-PEG20000	524	49	7,552	−1,94