Synthesis and characterization of stable blue light-emitting poly(spirobifluorene) derivatives containing alkoxy group

다국어 초록 (Multilingual Abstract)

<P>Polymers containing alkoxy-substituted spirobifluorene have been prepared from nickel(0)-mediated coupling or palladium-catalyzed Suzuki coupling. The polymers were characterized using various spectroscopies, such as <SUP>1</SUP>H-NMR, FT-IR, and elemental analysis. The high glass transition temperature and high decomposition temperature suggested that the resulting polymers possessed a high thermal stability. The obtained polymers possessed weight average molecular weight of 4500–33,000 with polydispersity index of 1.1–1.9 and good solubility. The low onsets of the oxidation potential suggested that the polymers containing alkoxy substituted spirobifluorene possessed a good hole injection property. The photoluminescence and electroluminescence of the polymers containing alkoxy substituted spirobifluorene showed stable blue color by suppressing the excimer formation due to intermolecular interaction. © 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 2316–2324, 2005</P>
<B>Graphic Abstract</B>
<P>Polymers containing alkoxy-substituted spirobifluorene have been prepared from nickel(0)-mediated coupling or palladium-catalyzed Suzuki coupling. The alkoxy substituted spirobifluorene polymers having good hole injection ability showed stable blue color by suppressing the eximer formation due to intermolecular interaction.
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