7,8,10-triphenylfluoranthene [TP-F], 7,10-diphenyl-8-p-tolylfluoranthene [DPT-F] and 7,10-diphenyl-8-p-cyanophenlyfluoranthene [DPC-F] were synthesized by using the Knoevenagel condensation and Diels–Alder addition. Multilayered EL devices were fabricated using these materials as non-doped blue emitting layers. DPT-F device including a methyl group has better thermal properties, a better luminance efficiency, a lower operating voltage, and a higher power efficiency than the TP-F device. TP-F showed skyblue CIE value of (0.192, 0.269) and 3.27cd/A at 10mA/cm2. DPT-F also showed sky-blue CIE value of (0.185, 0.252) and 2.31cd/A at 10mA/cm2.

The electrochemical properties of poly(a-methylbenzyl dipropargylamine) was studied by cyclic voltametry. Poly(a-methylbenzyl dipropargylamine) was prepared by the cyclopolymerization of a-methylbenzyl dipropargylamine in high yield. The photoluminescence peaks of the present polymer was observed at 443nm corresponding to the photon energy of 2.80 eV. The cyclovoltamograms of the polymer exhibited the irreversible electrochemical behaviors between the doping and undoping peaks. It was found that the kinetics of the redox process of poly(MBDA) might be mainly controlled by the electron transfer process from the experiment of the oxidation current density of poly(MBDA) versus the scan rate.

7-(4-([1,1-biphenyl]-4-yl(9,9-dimethyl-9H-fluoren-2-yl)amino)phenyl)-4-methyl-2H-chromen-2-one (BPFA-C) including coumarin moiety was synthesized through Suzuki aryl-aryl coupling reaction. Optical and electrical properties were examined by UV-visible absorption spectra, PL spectra, and AC-2. UV-visible spectrum of BPFA-C in a film state showed maximum absorption wavelength of 367 nm. PL spectrum of BPFA-C show maximum emission wavelength of 511 nm. BPFA-C showed highly efficient luminescence property. EL spectrum of BPFA-C exhibited a maximum value of 504 nm and BPFA-C device provided luminescence efficiency of 4.59 cd/A, power efficiency of 3.17 lm/W, and CIE (x,y) of (0.25, 0.53) at a current density of 10 mA/cm².