File Name : fig s1.tif Caption : the similar underlying chemical nature of each pcd form is demonstrated with ftir scans indicating γ-cd incorporation (3,600–3,000 (v(o-h), 2,928 (v(c-h)); and polymer crosslinking (1,701 (v(c=o), 1,541cm-1(δ(n-h)). File Name : fig s2.tif Caption : experimental setup for figure 4b. (a) pcd-γ-srpl diluted to 1 mg/ml is loosely entangled and dissociates into the agarose over time. however, the more entangled polymer at 100 mg/ml remains localized to its original area while also binding dox. (b) the 1 mg/ml srpl dissociation results in a decreasing signal relative to the initial absorbance in the 1 mg/ml area, which results in a negative fold change relative to the initial absorbance and diffusion only measurements.