Fig. 2: Structures, spectra, and structure-property relationships for LSs dyes.

A The chemical structures of LSs dye. B Normalized absorbance spectra of LS1-12 (10 μM) solution in DMSO. C Normalized fluorescence spectra of LS1-12 (10 μM) in DMSO. D Scatter plot of emission wavelengths versus energy gaps for LSs dyes. E Scatter plot of emission wavelengths versus Ec for LSs dyes. F The correlation of emission peaks and the fundamental band gap.