ABSTRACT DCJ, one of the DCM derivatives, has been used as a laser dye and a red emitter or a red dopant for OLED devices in recent decade. 4-(dicyanomethylene)-2-methyl-6-(julolidyl-9-enyl)-4H-pyran (DCJ) containing julolidine group has been synthesized for use as a red fluorescent dye molecule in organic light-emitting di- odes (OLEDs). In this paper, we reported a facile, simple and inexpensive procedure of purification of DCJ without necessity of HPLC analysis. The maximum absorption, emission, quantum efficiency are increasing in DCJ with the electron-donating of julolidine group.
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nullK. Ghanbari, H. Aghajani, M. Golbabaee, E. Khah, S. Nabavi and A. Koohian, "Column Chromatography: A Facile and Inexpensive Procedure to Purify the Red Dopant DCJ Applied for OLEDs," Advances in Materials Physics and Chemistry, Vol. 1 No. 3, 2011, pp. 91-93. doi: 10.4236/ampc.2011.13015.
 C. W. Tang and S. A. VanSkyle, “Organic Electrolumine- scence Diodes,” Applied Physics Letters, Vol. 51, No. 12, 1987, pp. 913-915. doi:10.1063/1.98799
 R. H. Young, C. W. Tang and A. P. Marchetti, “Current Induced Fluorescence Quenching in Organic Light Emitting Diodes,” Applied Physics Letters, Vol. 80, No. 5, 2002, p. 874. doi:10.1063/1.1445271
 E. Wit and J. McClure, “Statistics for Microarrays: Design, Analysis, and Inference,” 5th Edition, John Wiley & Sons Ltd., Chichester, 2004.
 L. Yang, M. Guan, Z. Bian, J. Xie, T. Chen and C. Huang, “Synthesis, Characterization, Photophysics and Electroluminescence Based on a Series of Pyran Containing Emitters,” Thin Solid Films, Vol. 500, No. 1-2, 2006, pp. 224-230. doi:10.1016/j.tsf.2005.11.011
 S. T. Lim, M. H. Chun, K. W. Lee and D. M. Shin, “Organic Light Emitting Diodes with Red Emission Using (2,6-Dimetyhl-4H-pyran-4’-ylidene) Malononitrile Moiety,” Optical Materials, Vol. 21, No. 1-3, 2003, pp. 217-220. doi:10.1016/S0925-3467(02)00139-8
 C. W. Tang, S. A. VanSkyle and C. H. Chen, “Electroluminecence of Doped Organic Thin Films,” Applied Physics Letters, Vol. 65, No. 9, 1989, p. 3610.
 B. C. Wang, H. R. Liao, W. H. Chen, Y. M. Chou, J. T. Yeh and J. C. Chang, “Theoretical Investigation of Electroluminescence Properties in Red Emission DCM, DCJ, RED and Derivatives,” Journal of Molecular Structure: THEOCHEM, Vol. 716, No. 1-3, 2005, pp. 19-25.
 Y. S. Yao, Q. X. Zhou, X. S. Wang, Y. Wang and B. W. Zhang, “A DCM Type Red Fluorescent Dopant for High Performance Organic Electroluminescent Devices,” Advanced Functional Materials, Vol. 17, No. 1, 2007, pp. 93-100. doi:10.1002/adfm.200600055
 C. Q. Ma, Z. Liang, X. S. Wang, B. W. Zhang, Y. Cao, L. D. Wang and Y. Qiu, “A Novel Family of Red Fluorescent Materials for Organic Light Emitting Diodes,” Synthetic Metals, Vol. 138, No. 3, 2003, pp. 537-542.
 Chen, et al., “Red Organic Electroluminescent Materials,” United State Patent 5908581, 1999.
 L. L. Woods, “Some Further Reactions of 2,6-Dimethyl- 4-Pyrone,” The Journal of Organic Chemistry, Vol. 80, No. 6, 1957, pp. 1440-1442.