Figure 7.
A) Chemical structures of amino‐ and hydroxy‐coumarin dioxetanes. B) Chemiluminescence kinetic profiles and total light emission of 7‐amino‐ and 7‐hydroxy‐coumarin dioxetanes [10 μM] in PBS (pH 7.0) at 37 °C and chemiluminescence images of 7‐amino‐ and 7‐hydroxy‐coumarin dioxetane [50 μM] in buffer solution (pH=7.0), 10 % DMSO at 37 °C. C) Chemiluminescence kinetic profiles and total light emission of 7‐amino‐ and 7‐hydroxy‐coumarin dioxetanes [10 μM] in PBS (pH 5.0) at 37 °C and chemiluminescence images of 7‐amino‐ and 7‐hydroxy‐coumarin dioxetane [50 μM] in buffer solution (pH=5.0), 10 % DMSO at 37 °C. Chemiluminescence images of 7‐amino‐ and 7‐hydroxy‐coumarin dioxetane were taken using IVIS® Lumina, images were acquired directly after the addition of the dioxetanes, with an exposure time of 3 min.