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. Author manuscript; available in PMC: 2018 Nov 12.
Published in final edited form as: Biomacromolecules. 2017 Feb 1;18(2):562–567. doi: 10.1021/acs.biomac.6b01715

Figure 2. pH sensitivity of tin-porphyrin-PEG hydrogels.

Figure 2.

A) Fluorescence spectra of SnCl2mTCPP hydrogels in pH=1–12 100 mM sodium phosphate solutions. B) Ratio of SnCl2mTCPP hydrogel fluorescence emission intensities at 600 nm and 650 nm. Data show mean +/− std. dev. for n=3 separate polymerization reactions and purifications. C) Fluorescence lifetime at 600 nm emission of SnCl2mTCPP hydrogels in 100 mM sodium phosphate at indicated pH.