Blue electroluminescence of novel pyrazoloquinoline and bispyrazolopyridine derivatives in doped polymer matrices

• DOI: 10.1039/a706561b
• Publication Date: 2002-07-26T09:15:53Z
• Authors: Z. He; G. H. W. Milburn; A. Danel; A. Puchala; P. Tomasik; D. Rasala
• Keywords: Quinoline

Blue electroluminescence has been demonstrated using novel materials 1,3-diphenyl-4-methyl-1H-pyrazolo[3,4-b]quinoline (PAQ4) and 4-phenyl-1,3,5,7-tetramethyl-1,7-dihydrodipyrazolo[3,4-b;4′,3′-e]pyridine (PAP1) for the first time. The peak maxima of their electroluminescent spectra were at 442 nm (ca. 20 shift from its photoluminescent maximum) PAQ4 425 (within same spectral range as photoluminescence) PAP1.