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4. Conclusions
layered organic electroluminescent device using novel starburst molecules, 4,40,400-
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1994;6:677e9.
In summary, we have designed and synthesized a series of novel
pyrazoline chromophores containing triphenylamine moieties. The
synthetic strategy is straightforward, benefits from high yield and
facile purification without tedious silica gel chromatography. The
thermal, optical and electrochemical properties were also investi-
gated. The fluorescence quantum yields of the six compounds
were obtained. Further research is presently under study in our
laboratory.
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Acknowledgements
We are grateful to Dr. Xiao-peng Chen and Prof. Ping Lu in
Department of Chemistry of Zhejiang University for computational
assistance.
The work was partially supported by the National Natural
Science Foundation of China (No. 20672079), Nature Science
Key Basic Research of Jiangsu Province for Higher Education
(No. 06KJA15007), Natural Science Foundation of Jiangsu Province
(No. BK2006048), Nature Science of Jiangsu Province for Higher
Education (No. 05KJB150116), the Specialized Research Fund for the
Doctoral Program of Higher Education (No. 20060285001), and Key
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