6 research outputs found
1,4-bis(2,2-diphenylethenyl)benzene as an efficient emitting material for organic light emitting diodes
We report on the photophysical properties of 1,4-bis(2,2-diphenylethenyl)benzene
(PEB) in a solution and a solid state. A poor blue photoluminescence efficiency of PEB in a solution dramatically increases in the deposited film. We explain such properties in terms of molecular dynamics and degrees of intramolecular freedom in various molecular environments. PEB as an electron-transport and emitting layer in organic light-emitting diodes (OLEDs) shows bright blue-green electroluminescence (EL) with the peak wavelength at λmax ~ 495 nm. The maximum external EL quantum efficiency of ηEL = 2.5 % and maximum luminance of 41600 cd/m2 in the optimized device were obtained, indicating that PEB possesses superior electron-transport ability
Tuning Electronic Properties of Functionalized Polyhedral Oligomeric Silsesquioxanes: A DFT and TDDFT Study
Synthesis of Monodisperse Oligo(1,4-phenyleneethynylene-alt-1,4-triptycyleneethynytene)s
Maag D, Kottke T, Schulte M, Godt A. Synthesis of Monodisperse Oligo(1,4-phenyleneethynylene-alt-1,4-triptycyleneethynytene)s. Journal of Organic Chemistry. 2009;74(20):7733-7742