Figure 1
From: Gold nanoparticle-based rapid detection and isolation of cells using ligand-receptor chemistry
Physico-chemical properties of Au NPs, Au-PEG NPs, Au-PEG-HA NPs. (a) Schematic representation of the synthesis of Au-PEG-HA NPs. (b) ATR-FTIR spectrum of Au NPs and Au-PEG NPs depicting PEGylation of Au NPs (3347.17 cm−1- OH group, 1095 cm−1- C-O-C, 1637 cm−1- C = O stretching). (c) 1H NMR spectroscopy demonstrating the chemical structure of HA in Au-PEG-HA NPs with characteristics peak labeled (inset mentioned in Fig. S1a). (d) UV absorption spectra with a characteristic SPR peak (519–521 nm) of Au NPs, Au-PEG NPs, Au-PEG-HA NPs. (e,f) Average size analysis of Au NPs, Au-PEG NPs, Au-PEG-HA NPs determined by TEM image analysis.
