Fig. 5. Emission intensity at 434 nm of 6 (2.5 μM) with (a) 25 μM (10 equivalents) of each polyP of different chain length, (b) 125 μM (50 equivalents based on Pi units) of each polyP of different chain length in 10 mM HEPES buffer solution at pH = 7.4. Excitation at 254 nm. Emission intensity at 430 nm of 7 (5 μM) with (c) 50 μM (10 equivalents) of each polyP of different chain length, (d) 250 μM (50 equivalents based on Pi units) of each polyP of different chain length in 10 mM HEPES buffer solution at pH = 7.4. Excitation at 250 nm. Number of replicates n = 3. Red dashed line: background emission intensity of the sensors.
