Synthesis, electroluminescence, and photovoltaic cells of new vinylene-copolymers with 4-(anthracene-10-yl)-2,6-diphenylpyridine segments
✍ Scribed by John A. Mikroyannidis; Panagiotis D. Vellis; Sheng-Hsiung Yang; Chain-Shu Hsu
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 310 KB
- Volume
- 115
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
Abstract
Three new soluble vinylene‐copolymers F, C, and P that contain 4‐(anthracene‐10‐yl)‐2,6‐diphenylpyridine as common segment and fluorene, carbazole, or phenylene, respectively, as alternating segment were prepared by Heck coupling. The glass transition temperature was high for F and C (110 and 117°C), whereas was lower than 25°C for P. The polymers were stable up to ∼ 300°C. They emitted blue–green light with maximum located at wavelength of 456–550 nm, which was of the order F < C < P. The photoluminescence quantum efficiency in THF solution was ∼ 30% for F and P and only 5% for C. All three copolymers were used as active layers for polymer light emitting diodes (PLEDs) and organic photovoltaic cells. The double PLEDs with configuration of indium‐tin oxide (ITO)/poly(ethylenedioxythiophene (PEDOT) : poly(styrenesulfonate)(PSS)/Copolymer F, C, or P/TPBI(1,3,5‐tris(2‐N‐phenylbenzimidazolyl)benzene)/Ca/Al were fabricated. Copolymer P emitted green light with maximum brightness of 28 cd/m^2^ and a current yield of 0.85 cd/A. Organic photovoltaics with the configuration of ITO/PEDOT : PSS/Copolymer and [6,6]‐phenyl‐C61‐butyric acid methyl ester blend (1 : 1) /Ca/Al were also fabricated. Copolymer P showed the highest power conversion efficiency of 0.034%. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010