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. 2012 May 8;12(5):5940–5950. doi: 10.3390/s120505940

Figure 1.

Figure 1.

Spectral response of 4 towards various thiols. (a) Absorption spectra of 4 (2.5 μM) upon addition of thiols (2 equiv) in phosphate buffer (pH 7.4, 50 mM) at 20 min; (b) Fluorescence spectra of 4 (2.5 μM) upon addition of thiols (2 equiv) in phosphate buffer (pH 7.4, 50 mM) (λex = 565 nm) at 20 min. The inset shows time-dependent fluorescence changes (λem = 587 nm). The legends in (a) correspond to (b) as well.