We have demonstrated a short fluorescence lifetime of the substituted phenyl/vinyl compound, 1,4-bis[2-[4-[N,N-di(p-tolyl)amino]phenyl]vinyl]benzene (DSB). The fluorescence lifetime of the 0.5 mol.% DSB-doped $4,4^{\prime }$ -bis(9-carbazolyl)biphenyl film is $1.2\mathrm{ns}$ , which is desirable for organic light-emitting diode (OLED) light sources for optical interconnect applications. We have also examined frequency dependences on the electroluminescence (EL) intensity of the OLED and the photoluminescence (PL) intensity of the DSB film. The $-3\mathrm{dB}$ cutoff frequency of the EL intensity is about $3\mathrm{MHz}$ for the optimized device, and the $-3\mathrm{dB}$ cutoff frequency of the PL intensity is about $160\mathrm{MHz}$ for the optically pumping DSB film.