Fig. 2. US-induced release of NAP from β-carbonate disulfide polymer P1 (11.6 μM, 3 mg mL−1) and small molecule control 1 (25 μM) in MeCN : H2O = 2 : 3 (v/v). (a) UV-vis and fluorescence (λexc = 450 nm) spectra of P1 during sonication. (b) Released NAP from P1 and control 1 during sonication calculated from fluorescence peak intensity of NAP at λem = 550 nm. Insets: photographs of the solutions under daylight and UV-light (λexc = 455 nm).
