Fig. 2: The spectral monitoring of the aggregation of ESi5 dyes with different water-soluble groups.
From: A stable and biocompatible shortwave infrared nanoribbon for dual-channel in vivo imaging
a The chemical structures of ESi5-NS, ESi5-N, ESi5-S, and ESi5-C1(-C5). b The electrostatic potential surfaces calculated for ESi5-NS, ESi5-N, ESi5-S and ESi5-C1 at B3LYP/6-31G level. c The UV-Vis absorption (Blue, solid line) and the fluorescence emission (Red, dash line) spectra of the resulting solution upon dilution of the MeOH stock of ESi5-NS, ESi5-N, ESi5-S, and ESi5-C1 in PBS (pH = 7.4, 10 mM). The UV-Vis absorption (Blue, space-filled) and emission spectra (Red, space-filled) of ESi5 in MeOH were plotted for comparison purposes.
