Fig. 3: Photochromic characterization of receptors.
From: Glucose-derived receptors for photo-controlled binding of amino acid esters in water
(a) UV-VIS spectra of 2 in H2O (c = 100 µM); (b) fragments of 1H NMR spectra of 2 in D2O showing the signals of aromatic protons: directly after the synthesis of the receptor (top), after 15 s irradiation with 410 nm light (middle), after 160 min irradiation with 623 nm light (bottom).
