Synthesis of platinum complexes of fluorenyl-substituted porphyrins used as phosphorescent dyes for solution-processed organic light-emitting devices |
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| Authors: | Christine O. Paul-Roth Samuel Drouet Areej Merhi J.A.G. Williams Louise F. Gildea Christopher Pearson Michael C. Petty |
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| Affiliation: | 1. Institut des Sciences Chimiques de Rennes, ISCR-UMR CNRS 6226, Université de Rennes I, 35042 Rennes Cedex, France;2. Institut National des Sciences Appliquées de Rennes, INSA-ISCR, 20 Avenue Buttes de Coësme, 35043 Rennes, France;3. Department of Chemistry, Durham University, Durham DH1 3LE, UK;4. School of Engineering and Centre for Molecular and Nanoscale Electronics, Durham University, Durham DH1 3LE, UK |
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| Abstract: | Platinum(II) complexes of symmetrical meso-substituted A4-porphyrins bearing four fluorene donor moieties 5,10,15,20-tetra(4-(2 methyloxyfluorenyl)phenyl)porphyrin, referred to as TOFP, or eight fluorene arms, 5,10,15,20-octa(3,5-(2 methyloxyfluorenyl)phenyl)porphyrin, OOFP, were synthesised and characterised. The photophysical properties of the new compounds are reported and compared to those of PtTPP and PtTFP {TPP=tetraphenylporphyrin and TFP=tetra(2-fluorenyl)porphyrin}. The luminescence quantum yields of PtTOFP and PtOOFP are 11% and 4.2%, respectively, compared to 4.6% for the reference PtTPP and only 2.0% for the previously studied compound PtTFP. The electronic and optoelectronic behaviour of solution-processed organic light-emitting devices (OLEDs) are reported that incorporate these platinum porphyrins as phosphorescent dyes doped into different layers of a polyvinylcarbazole (PVK) host. |
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| Keywords: | Porphyrins Platinum Fluorene Phosphorescence Light harvesting Quantum yield OLEDs |
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