14 January 2008 Color tunable conductive vinyl copolymers for OLED applications
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Abstract
A number of novel vinyl monomers containing either a fluorescent or a phosphorescent moiety were synthesized. The vinyl monomers have either hole or electron transporting properties and luminescence in near-UV, blue, green, to red. The overall charge transport properties and emission hue can be tuned by applying and the various monomers at different mix ratios. The vinyl monomers were copolymerized into high molecular weight yet soluble conductive copolymers using traditional solution free radical polymerization method. The vinyl monomers prepared including electron transporting 11-vinyl-phenanthro[9.10-b]quinoxaline (QP) and 1-vinyl pyrene (PY), hole transporting 9-(4-methoxyphenyl)-3-vinyl-9H-carbazole (KPA) and N-phenyl-N-(4-vinylphenyl) naphthalene -1-amine (NPA), and a red-emitting phosphorescent monomer based on the Europiujm complex [Eu(DBM)3H-EtPIP]. The optical, thermal and electrical properties of the copolymers were characterized. Homojunction OLED based on the copolymers were prepared by spin-coating. The EL spectra and I-V-L characteristics were obtained and will be reported.
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Louis M. Leung, Yik-Chung Law, Michael Y. Wong, Lok-Yee Tang, "Color tunable conductive vinyl copolymers for OLED applications", Proc. SPIE 6828, Light-Emitting Diode Materials and Devices II, 68280D (14 January 2008); doi: 10.1117/12.752059; https://doi.org/10.1117/12.752059
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