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Relative fluorescence intensity changes of solutions of 1 or 2 (5.53 × 10−6 M) in response to added LPA or PA (1.1 × 10−4 M) in MeOH. Excitation is at 360 nm, and emission is monitored at 400 nm. The standard deviation (n = 3) of the relative fluorescence intensity for each analyte ranges from 0.01 to 0.03.
