Citation: Ming-liang Sun, Cheng-mei Zhong, Feng Li, Qi-bing Pei. PURIFIED POLAR POLYFLUORENE FOR LIGHT-EMITTING DIODES AND LIGHT-EMITTING ELECTROCHEMICAL CELLS[J]. Chinese Journal of Polymer Science, ;2012, 30(4): 503-510. doi: 10.1007/s10118-012-1132-4 shu

PURIFIED POLAR POLYFLUORENE FOR LIGHT-EMITTING DIODES AND LIGHT-EMITTING ELECTROCHEMICAL CELLS

Received Date: 18 July 2011
Revised Date: 9 September 2011

Fund Project: The work was financially supported by the National Natural Science Foundation of China (No. 50903078), Specialized Research Fund for the Doctoral Program of Higher Education (New Teachers) (No. 20090132120017), Promotive research fund for excellent young and middle-aged scientisits of Shandong Province (No. BS2009CL036) and the Fundamental Research Funds for the Central Universities (No. 201113045).

Conjugated ployfluorene with 2-(2-(2-methoxyethoxy)ethoxy)ethyl groups (EO-PF) is prepared by the palladiumcatalyzed Suzuki coupling reaction. The polymer is purified carefully by a simple chemical procedure. The inductively coupled plasma (ICP) test shows palladium-catalyst in the polymer can be removed by this procedure. The thermal properties, electrochemical properties, UV-Vis absorption properties, photoluminescence properties and electroluminescent properties of the polymer without (EO-PF1) or with purification (EO-PF2) are studied. EO-PF2 shows better PL CIE coordinates in THF solutions as blue light-emitting materials and better photoluminescence stability in thin solid films. Polymer light emitting diodes and electrochemical cells based on EO-PF2 exhibit somewhat improved optoelectronic performance than control devices of EO-PF1.
- Purification
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