Spectral characterization of ligand 8, rhomboid 10, P1, and P2. (A) UV-Vis absorption spectra of ligand 8, rhomboid 10, P1, and P2 in methanol. (B) Fluorescence emission spectra of ligand 8, rhomboid 10, P1, and P2 in methanol (λex = 362 nm); (Inset) photograph of 8, 10, P1, and P2 in methanol upon excitation at 365 nm using a UV lamp at 298 K. (C) UV-Vis absorption spectra of ligand 8, rhomboid 10, P1, and P2 in 10%/90% methanol/water. (D) Fluorescence emission spectra of ligand 8, rhomboid 10, P1, and P2 in 10%/90% methanol/water (λex = 362 nm); (Inset) photograph of 8, 10, P1, and P2 in 10%/90% methanol/water upon excitation at 365 nm using a UV lamp at 298 K. All of the concentrations are 10.0 µM; monomer concentration was used for P1 and P2.