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Electron-transporting materials are necessary for organic light-emitting diodes (OLEDs) if their efficiency is going to be increased sufficiently for commercial application. Evidence is presented that the novel, electron-deficient polymer 2,7-poly(9-fluorenone), see Figure, has the qualities required of an electron-injection material in multilayer LEDs.
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Uckert et al. (2000) studied this question.
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