Fig. 5From: Gold nanoparticles with chitosan, N-acylated chitosan, and chitosan oligosaccharide as DNA carriersFT-IR spectra of chitosan, acyl-chitosan, and chitosan oligosaccharide. Band at 1591 cm−1 corresponds to secondary amides; 3200–3500 cm−11 regions correspond to N-H and O-H vibrationsBack to article page