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Synthesis and Characterization of Electroluminescent Conjugated Polymers Containing Sulfone Group in the Main Chain  

Kang Min Sung (School of Materials Science and Engineering, Seoul National University)
Jung Ho Kuk (School of Materials Science and Engineering, Seoul National University)
Park Soo Young (School of Materials Science and Engineering, Seoul National University)
Kim Jang-Joo (School of Materials Science and Engineering, Seoul National University)
Publication Information
Polymer(Korea) / v.29, no.4, 2005 , pp. 357-362 More about this Journal
Abstract
As a new class of electroluminescent (EL) polymers, PPV-based polymers containing sulfone group in the main chain were synthesized through Witting polymerization reaction to control n-conjugation length and energy levels for predictable light emission and enhanced device performance. These EL polymers showed good solubility in common organic solvents and high thermal stability with initial decomposition temperature of ca. $400^{circ}$ and glass transition temperature around $200^{circ}C$ Emission colors were tuned from green to deep blue by reducing ${\pi}$-conjugated length between sulfone groups. It was also noted from the cyclic voltammetry (CV) measurements and semiempirical calculations that sulfone group with high electron affinity effectively lowered HOMO-LUMO energy levels to enhance EL device performance.
Keywords
electroluminescence; sulfone; charge carrier balance; PPV;
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Times Cited By Web Of Science : 0  (Related Records In Web of Science)
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