Fig. 1From: Biocompatible Fluorescent Core-Shell Nanoconjugates Based on Chitosan/Bi2S3 Quantum Dots a UV-vis spectra of Bi2S3 systems: (a) QD_CHI0.33_2.5, (b) QD_CHI0.33_3.5, (c) QD_CHI0.67_2.5, (d) QD_CHI0.67_3.5, (e) QD_CHI1.33_2.5, and (f) QD_CHI1.33_3.5. Inset: optical bandgap using “TAUC” relation. b Blue-shift value as a function of pH (black squares, pH 2.5, and red circles, pH 3.5) and molar ratio of precursors ([Bi3+]/[S2−]). A two-column figureBack to article page