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Second DSC scan of BDPQ with a heating/cooling rate of in nitrogen. The structure of oligoquinoline BDPQ is shown in the inset.
Normalized optical absorption and PL emission spectra of BDPQ in dilute THF solution and thin film. The excitation wavelength was and in solution and thin film, respectively.
EL spectra of diode at various applied voltages. Inset shows the device schematic.
Current density–voltage–luminance characteristics of the BDPQ blue LED shown in Fig. 3.
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