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. 2021 Jul 14;7(7):1205–1215. doi: 10.1021/acscentsci.1c00444

Figure 2.

Figure 2

Photophysical characterization of AzoPA (A,B) and dAzoPA (C,D). (A,C) UV–vis spectra of AzoPA (A) and dAzoPA (C) in the dark-adapted (black, trans), 365-nm-adapted (gray, cis), and 460-nm-adapted (blue, trans) photostationary states (50 μM, DMSO). (B,D) Reversible cycling between photoisomers with alternating illumination at 365/460 nm for AzoPA (B) and dAzoPA (D). (E) Nuclear magnetic resonance (NMR) study (performed in DMSO-d6) of the aromatic region of dAzoPA before and after irradiation with 365 or 460 nm and quantification of the trans form relative to the cis form.