fig19

Figure 19. (A) Synthetic routes of 3SO2; (B) EL spectra of the device based on 3SO2 under different voltages. Inset: EL color coordinates on the CIE 1931 chromaticity diagram and EL emissions from the 3SO2-based device in low luminance (up) and high luminance (down). Reproduced with permission^[86], Copyright 2020, Springer Nature; (C) Synthetic routes of 3 M; (D) Plot of I (emission intensity)/I₀ (emission intensity in THF solution) of 3M vs. water fractions of the solvent mixture. Inset: PL spectra of 3M (10^-5 mol/L) in THF/water mixtures with different water fractions. Reproduced with permission^[114], Copyright 2020, Elsevier B.V. EL: electroluminescence; CIE: commision internationale de l’eclairage; THF: tetrahydrofuran; PL: photoluminescence.