Photophysical Properties of Porphyrin Dendrimers as Red Light-Emitters for Organic Light-Emitting Diode (OLED)
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Abstract
We report on the investigation of photophysical properties of the free-base and metal chelated porphyrins bearing bulky stilbene dendron substituents at the meso-positions. The free-base and zinc chelated porphyrins emitted a red fluorescence in solution and solid state, while the copper derivatives were non-luminescent. The zinc porphyrin derivative with a G-1 stilbene dendron substituted on the meso-positions emitted the best red colour with a colour chromaticity close to a red colour using in a full-colour display screen. Upon excitation of the dendron units in dichloromethane an intramolecular energy transfer took place from the dendron units to the porphyrin core.
Keywords: porphyrin, dendrimer, red-light emitter, organic light-emitting diodes (OLED)
Corresponding author: E-mail: pvinich@sci.ubu.ac.th
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References
[2] Forrest, S.R. 2003 The Road to High Organic Light Emitting Devices, Organic Electronics, 4(2-3), 45-197.
[3] Gymer R.W. 1996 Organic Electroluminescent Displays, Endeavour, 20(3), 115-120.
[4] Tang, C.W., VanSlyke, S.A. and Chen, C.H. 1989 Electroluminescence of Doped Organic Thin Films, Journal of Applied Physics, 65(9), 3610-3616.
[5] Kim, D.Y., Cho, H.N. and Kim, C.Y. 2000 Blue Light Emitting Polymers, Progress in Polymer Science, 25, 1089-1139.
[6] Markham, J.P.L., Lo, S-C., Burn, P.L. and Samuel, I.D.W. 2002 High-Efficiency Green Phosphorescence from Spin-Coated Single-Layer Dendrimer Light-Emitting Diodes, Applied Physic Letters, 80, 2645-2647.
[7] Kraft, A., Grimsdale, A.C. and Holmes A.B. 1998 Electroluminescent Conjugated Polymer-Seeing Polymers in a New Light, Angewandte Chemie International Edition, 37, 402-428.
[8] Lamansky, S., Djurovich, P., Murphy, D., Abdel-Razzaq, F., Lee, H-E., Adach, C., Burrow, P.E., Forrest, S.R. and Thompson, M.E. 2001 Highly Phosphorescent Bis-Cyclometalated Iridium Complexes: Synthesis, Photophysical Characterisation, and Use in Organic Light Emitting Diodes, Journal of the American Chemical Society, 123, 4304-4312.
[9] Tsuboyama, A., Iwawaki, H., Furugori, M., Mukaide, T., Kamatani, J., Igawa, S., Moriyama, T., Miura, S., Takiguchi, T., Okada, S., Hoshino, M. and Ueno, K. 2003 Homoleptic Cyclometalated Iridium Complexes With Highly Efficient Red Phosphorescence and Application to Organic Light-Emitting Diode, Journal of the American Chemical Society, 125(42), 12971-12979.
[10] Zhu, W., Zhu, M., Ke, Y., Su, L., Yuan, M. and Cao, Y. 2004 Synthesis and Red Electrophosphorescence of a Novel Cyclometalated Iridium Complex in Polymer Light-Emitting Diodes, Thin Solid Films, 446(1), 128-131.
[11] Jiang, B. and Jones Jr., W.E. 1997 Synthesis and Characterization of a Conjugated Copolymer of Poly(Phenylene Vinylene) Containing a Metalloporphyrin Incorporated into the Polymer Backbone, Macromolecules, 30, 5575-5583.
[12] Iqbal, R., Yahioglu, G., Milgrom, L., Moratti, S.C., Holmes, A.B., Cacially, F., Mogrado, J. and Friend, R.H. 1999 Synthesis Of Porphyrin-PPV Copolymers for Applications in LEDs, Synthetic Metals, 102, 1024-1025.
[13] Lo, S.C. and Burn, P.L. 1999 Synthesis of a Porphyrin/Conjugated Polymer Hybrid, Synthetic Metals, 102, 1089-1090.
[14] Kwong, R.C., Sibley, S., Dubovoy, T., Baldo, M., Forrest, S.R. and Thompson, M.E. 1999 Efficient, Saturated Red Organic Light Emitting Devices Based on Phosphorescent Platinum (II) Porphyrins, Chemistry of Materials, 11(12), 3709-3713.
[15] Dandliker, P.J., Diederich, F., Zingg, A., Gisselbrecht, J.-P., Gross, M., Louati, A. and Sanford, E. 1997 Dendrimers with Porphyrin Cores: Synthetic Models for Globular Heme Protein, Helvetica Chimica Acta, 80, 1773-1801.
[16] Hawker, C.J. and Frechet, J.M.J. 1990 Preparation of Polymers with Controlled Molecular Architecture. A New Convergent Approach to Dendritic Macromolecules, Journal of the American Chemical Society, 112, 7638-7647.
[17] Vinogradov, S.A., Lo, L.-W. and Wilson, D.F. 1999 Dendritic Polyglutamic Porphyrins: Probing Porphyrin Protection by Oxygen-Dependent Quenching of Phosphorescence, Chemistry-A European Journal, 5, 1338-1347.
[18] Promarak, V. and Pankwaung, A. 2005 Synthesis and Characterisation of Porphyrin Dendrimers, Journal of Ubon Ratchathani University, 1, 69-94.
[19] Matos, M.S., Hofkens, J., Verheijen, W., De Schryver, F.C. Hecht, S., Pollak, K.W., Fréchet, J.M.J., Forier, B. and Dehaen, W. 2000 Effect of Core Structure on Photophysical and Hydrodynamic Properties of Porphyrin Dendrimers, Macromolecules, 33, 2967-2973.
[20] Jiang, D-L; Aida, T. 1998 Morphology-Dependent Photochemical Events in Aryl Ether Dendrimer Porphyrins: Cooperation of Dendron Subunits for Singlet Energy Transduction, Journal of the American Chemical Society, 120, 10895-10901.
[21] Smith, K.M. 1976 Porphyrins and Metalloporphyrins, Elsevier, Amsterdam.