POLYMER, POLYMER COMPOSITION AND ORGANIC LIGHT-EMITTING DEVICE
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United States of America Patent
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Jan 1, 2015
app pub date -
Dec 20, 2012
filing date -
Dec 23, 2011
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Abstract
A composition comprising a polymer and at least one phosphorescent light-emitting dopant wherein: the polymer comprises a polymer backbone and charge transporting groups pendant from the polymer backbone; the polymer backbone is partially conjugated; and the polymer has a triplet energy level of at least 2.4 eV.
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