Binding Quantum Dots to Silk Biomaterials for Optical Sensing

Figure 7

Change of photoluminescence intensities in QDs-loaded silk films in response to H₂O₂. (a) shows glycerol-added silk films. (b) shows methanol-treated silk films. (A) MPA-QDs-loaded silk films. (B) MEA-QDs-loaded silk films. H₂O₂ concentrations in the samples (from left to right): 0.0, 0.001, 0.005, 0.01, 0.05, and 0.075 mM on the 1st row; 0.1, 0.2, 0.3, 0.35, 0.4, and 0.45 mM on the 2nd row; 0.5, 0.625, 0.75, 0.875, 1.0, and 2.5 mM on the 3rd row; 5.0, 7.5, 10.0, and 0.0 mM on the 4th row. (C) Photoluminescence intensity changes as a function of H₂O₂ concentrations in solution.

(a)

(b)