New polyphenylene‐ and polyphenylenevinylene‐based copolymers containing triarylpyrazoline units in the main chains |
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| Authors: | Qiang Peng Mingjun Li Xinghua Tang Shiqiang Lu Junbiao Peng Yong Cao |
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| Institution: | 1. Department of Environmental and Chemical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang, 330034, People's Republic of ChinaDepartment of Environmental and Chemical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang, 330034, People's Republic of China;2. Department of Environmental and Chemical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang, 330034, People's Republic of China;3. Department of Materials and Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 330034, People's Republic of China;4. Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, People's Republic of China |
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| Abstract: | Two novel polyphenylene and polyphenylenevinylene copolymers containing triarylpyrazoline units in the main chains were synthesized and characterized. The resulting copolymers were amorphous and showed excellent solubility in common organic solvents, such as dichloromethane, chloroform, 1,2‐dichloroethane, chlorobenzene, toluene, and THF. The polymers possessed good thermal stability with glass transition temperatures of 82 and 96 °C and decomposition onset temperatures of 295 and 309 °C, respectively. They exhibited good photoluminescence properties with high photoluminescence efficiencies. Double‐layered light‐emitting‐diode devices with an indium tin oxide/Poly(3,4‐ethylenedioxythiophene)/polymer/Ba/Al configuration could emit strong green light with external quantum efficiencies of0.53 and 0.92%. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 1632–1640, 2007 |
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| Keywords: | conjugated polymers electroluminescence light‐emitting diodes (LED) photoluminescence polyphenylene polyphenylenevinylene synthesis triarylpyrazoline |
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