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Synthesis, Characterization, and Electroluminescent Properties of Pyridinylene Vinylene-Modified Phenylene Vinylene Copolymers

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Abstract

Two random copolymers of phenylene vinylene and pyridinylene vinylene, ED-co-PyV-PPV and EM-co-PyV-PPV, were synthesized according to the Gilch route. The polymers possess good solubility in common solvents, and high thermal stability with 5% weight loss temperature above 378°C. The weight-average molecular weight (M w) and polydispersity index of ED-co-PyV-PPV and EM-co-PyV-PPV are 3.12 × 105 and 1.40, and 2.30 × 105 and 1.96, respectively. Single-layer polymer light-emitting diodes (PLEDs) with indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene) (PEDOT):poly(styrenesulfonate) (PSS)/polymer/Ca/Al configuration were fabricated. The turn-on voltages of the PLEDs based on ED-co-PyV-PPV and EM-co-PyV-PPV were approximately 4.0 V and 2.8 V, respectively. The ED-co-PyV-PPV PLED device exhibited the maximum luminance of ca. 4380 cd/m2 with maximum electroluminescence (EL) efficiency of 6.35 cd/A.

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Correspondence to Rupei Tang or Zhan’ao Tan.

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Tang, R., Zhang, W., Qian, D. et al. Synthesis, Characterization, and Electroluminescent Properties of Pyridinylene Vinylene-Modified Phenylene Vinylene Copolymers. J. Electron. Mater. 41, 2447–2452 (2012). https://doi.org/10.1007/s11664-012-2173-8

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