2024
DOI: 10.1002/adom.202402036
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Heteroatom‐Embedded Spiro[Fluorene‐9,9′‐Xanthene]‐Based Electron Transport Materials for Improved Driving Voltage and Efficiency in Phosphorescent Organic Light‐Emitting Diodes

Byeonghun Kim,
SeungWon Han,
Jun Yeob Lee

Abstract: The organic material 9,9‐spirobifluorene (SBF) is a useful building block for the construction of organic light‐emitting diodes owing to its rigid molecular structure, good charge transport properties, and high triplet energy. However, the electron transport properties of the SBF‐derived electron transport materials (ETMs) are currently not good enough and should be improved. In this work, two ETMs derived from spiro[fluorene‐9,9′‐xanthene] (SFX) and spiro[cyclopenta[1,2‐b:5,4‐b′] dipyridine‐5,9′‐xanthene] (SP… Show more

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