Fig. 3
From: Unusual multiscale mechanics of biomimetic nanoparticle hydrogels
Molecular structure of GSH stabilizers at the CdTe NP surface. 1H NMR spectra of a GSH at pH = 10.0, b Cd x (GSH) y complexes, c Hydrogel-544, d Hydrogel-590, and e Hydrogel-618. Amino acid residues in GSH are indicated by a single-letter code: Glutamyl, Q; Glycinyl, G; Cysteinyl, C. f Two-dimensional 1H–1H ROESY spectrum of Hydrogel-544. Schematic representations of g the three-point bonding (TPB) mode and h the single-point bonding (SPB) mode between GSH and the edge and face of a CdTe NP, respectively. The two bonding modes are clearly visible in the NMR spectra (b–e) as indicated by the symbol (star) for TPB and symbol (triangle) for SPB. Measurements of the density of GSH indicate that only one layer of GSH is present around each NP, so ligands attached to the particle surfaces are also participating in the gel network
