Fig. 5
From: Ultrathin two-dimensional porous organic nanosheets with molecular rotors for chemical sensing
Chemical sensing of metal ions by NUS-24 nanosheets. a Fluorescence emission spectra of NUS-24 nanosheets (c = 0.1 mg mL−1) upon titration with Fe3+ solution (1 × 10−2 M) at room temperature (λ ex = 365 nm). b Stern−Völmer plots of NUS-24 nanosheets, bulk powder, and compared small molecules being titrated with Fe3+. c The quenching percentages and K sv constants of NUS-24 nanosheets, bulk powder, and compared small molecules by Fe3+. d The ion selectivity of NUS-24 nanosheets, bulk powder, and compared small molecules. e The K SV constants of NUS-24 nanosheets being titrated with different metal ion solutions (left inset: fluorescent photograph of NUS-24 nanosheets upon titration with different metal ion solutions, λ ex = 365 nm; Right inset: emission decay trace of NUS-24 nanosheets before and after the addition of Fe3+ solution at room temperature). The error bars in c and e show average and range of measured values based on at least five repeats in every single measurement
