Fig. 5: Doping BISX, ISX, MISX and MTSX into PMMA films with different ratios.

PL spectra of BISX, ISX, MISX and MTSX (a–d) in PMMA film with different weight ratios (m/m), respectively. Inset: fluorescence images of the corresponding compounds in PMMA (5%). Excitation wavelength (λ_ex) = 365 nm.