Aromatic polymers with side oxadiazole rings as luminescent materials in LEDs |
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| Authors: | Maria Bruma Elena Hamciuc Burkhard Schulz Thomas Köpnick Yvette Kaminorz Jenifer Robison |
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| Institution: | 1. Institute of Macromolecular Chemistry, Aleea Ghica Voda 41 A, 6600 Iasi, Romania;2. University of Potsdam, FZDOBS, Am Neuen Palais 10, 14469 Potsdam, Germany;3. Institute of Thin Film Technology and Microsensors, Kanntstr. 55, 14513 Teltow, Germany;4. University of Potsdam, Institute of Physics, Am Neuen Palais 10, 14415 Potsdam, Germany;5. Tyco Electronics Corporation, Menlo Park, California 94025, USA |
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| Abstract: | Aromatic polyamides and polyazomethines with side oxadiazole rings have been synthesized by using aromatic diamines containing pendent substituted oxadiazole groups and a diacid chloride having diphenylsilane or hexafluoroisopropylidene, or an aromatic dialdehyde with fluorene unit, respectively. These polymers were easily soluble in amidic solvents. Very thin films which were deposited from polymer solutions onto silicon wafers exhibited smooth, pinhole-free surface in atomic force microscopy investigations. The polymers showed high thermal stability with decomposition temperature being above 400°C. Some of them exhibited blue photoluminescence, in the range of 450-480 nm, making them promising candidates for future use as high performance materials in the construction of light emitting devices. |
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| Keywords: | oxadiazole photoluminescence polyamides polyazomethines thin films |
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