Aggregation-Induced Emissions of Fluorenonearylamine Derivatives: A New Kind of Materials for Nondoped Red Organic Light-Emitting Diodes

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• 作者：Yang Liu ; Xutang Tao ; Fuzhi Wang ; Xiangnan Dang ; Dechun Zou ; Yan Ren ; Minhua Jiang
• 刊名：Journal of Physical Chemistry C
• 出版年：2008
• 出版时间：March 13, 2008
• 年：2008
• 卷：112
• 期：10
• 页码：3975 - 3981
• 全文大小：455K
• 年卷期：v.112,no.10(March 13, 2008)
• ISSN：1932-7455

文摘

A new kind of fluorenonearylamine derivatives possessing vagarious red-emitting aggregation-induced emission(AIE) characteristics was reported for the first time. On the basis of theoretical calculations and experimentalresults, the AIE was found to originate from the unique dimer (excimer) specifically in the aggregates. In thecrystals of both compounds, every two molecules are bond together by intermolecular O···H or C···C bondsto form particular dimers. In virtue of their nice solid-state red fluorescence, nondoped red-light OLEDsbased on these AIE-active materials were fabricated. The devices exhibited low turn-on voltages of about 3V, luminescence of 14135 and 4813 cd m^-2, and efficiencies of 1.40 and 0.35 lm W^-1 based on the twomaterials. The results demonstrated that such AIE-active materials are promising candidates for nondopedred emission OLED applications.