Fig. 1: Molecular structures and working principle.
From: J-aggregates of meso-[2.2]paracyclophanyl-BODIPY dye for NIR-II imaging
a Chemical structures of PCP-BDP1, PCP-BDP2, Ph-BDP1, and Ph-BDP2. b Fluorescence spectra of PCP-BDP2 in diluted dichloromethane solution (10 μM) (black line, “M” refers to monomer), THF-water binary solvents (10 μM, 1:9, v/v) (red line, J1-band), and the crystalline powder (blue line, J2-band). The parallelogram in red represents the single molecular of PCP-BDP2. c Schematic illustration of the construction of the PCP-BDP2 nanoparticles for NIR-II imaging. Source data underlying (b) are provided as a Source data file.
