Synthesis and characterization of novel germanium-containing poly(p-phenylenevinylene) derivatives

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Novel blue-emitting germanium-containing poly(p-phenylenevinylene) (PPV) derivatives with well-defined conjugation lengths were synthesized via Wittig-condensation polymerizations. The polymers can be color-tuned by the introduction of various chromophores into the PPV-based polymer backbones. The photoluminescence (PL) spectra of the polymers, GePVK (containing carbazole moieties), GeMEH (containing dialkoxybenzene moieties), and GePTH (containing phenothiazine moieties), were found to exhibit blue, greenish blue, and green emissions, respectively. GePTH produces more red-shifted emission than GeMEH and GEPVK, resulting in green emission, and the solution and solid state PL spectra of GePVK consist of almost blue emission. The electroluminescence spectra of GeMEH and GePTH contain yellowy green and yellow colors, respectively. Interestingly, GePVK exhibits white emission with CIE coordinates of (0.33, 0.37) due to electroplex emission in the light-emitting diodes. (C) 2007 Wiley Periodicals, Inc.
Publisher
JOHN WILEY & SONS INC
Issue Date
2008-02
Language
English
Article Type
Article
Keywords

LIGHT-EMITTING-DIODES; POLYHEDRAL OLIGOMERIC SILSESQUIOXANE; CONJUGATED POLYMERS; ELECTROLUMINESCENT POLYMERS; LUMINESCENT POLYFLUORENES; OPTICAL-PROPERTIES; PENDANT GROUPS; MAIN-CHAIN; FLUORENE; COPOLYMERS

Citation

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, v.46, no.3, pp.979 - 988

ISSN
0887-624X
DOI
10.1002/pola.22441
URI
http://hdl.handle.net/10203/93092
Appears in Collection
CH-Journal Papers(저널논문)
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