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. 2016 May 24;55(29):8363–8366. doi: 10.1002/anie.201602941

Figure 1.

Figure 1

Properties of the calcium‐sensitive photocage. a) Absorbance spectra of 7 in aqueous buffers containing different [Ca2+]. b) Normalized fluorescence intensity (fl) of released coumarin versus irradiation time (irradiating at λ=365 nm) of 7 in the presence (•; 10 mm CaCl2) or absence (○; 10 mm ethylene glycol tetraacetic acid (EGTA)) of Ca2+ ions. c) Determination of the K d value of compound 7 by the change in absorption at λ=430 nm (ΔA). d) Determination of the K d value of compound 7 by the initial fluorescence increase. Error bars in (b–d) show ± the standard error (S.E.; n=2).