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. Author manuscript; available in PMC: 2011 Oct 1.
Published in final edited form as: Biomaterials. 2010 Jul 8;31(29):7411–7422. doi: 10.1016/j.biomaterials.2010.06.023

Figure 2.

Figure 2

UV-Vis spectral change (A) and emission change (B) of SM1 in B-R buffer at different pH values. Figure 2C shows fluorescence intensity (at 517 nm) ratios of SM1, SM2, SM3, and 4 from pH 3 to pH 10. F0 is the fluorescence intensity at pH 10. Excitation wavelength for emission spectra was 405 nm. Concentrations of the sensors were 5 μM.