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Oligofluorene with multiple spiro-connections: its and their use in blue and white OLEDs

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Abstract

Bond rotation within molecules is regarded as one of the nonradiative decay pathways and is detrimental to high photoluminescence quantum yields. In this work, a bulky and rigid blue emitter (Spiro-F) with five spiro-carbon linkages is synthesized. Spiro-F can serve not only as an active component of blue organic light-emitting diodes (OLEDs), but also as a host and blue emitter of white OLEDs. The WOLED offers a low turn-on voltage of 3.5 V and a high current efficiency of 3.6 cd A−1, together with CIE coordinates of (0.29, 0.33). This work proves the potential of super-rigid oligofluorene emitters for OLEDs.

Graphical abstract: Oligofluorene with multiple spiro-connections: its and their use in blue and white OLEDs

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Publication details

The article was received on 04 Dec 2018, accepted on 02 Feb 2019 and first published on 05 Feb 2019


Article type: Paper
DOI: 10.1039/C8NJ06135A
Citation: New J. Chem., 2019, Advance Article
  • Open access: Creative Commons BY license
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    Oligofluorene with multiple spiro-connections: its and their use in blue and white OLEDs

    D. Xia, C. Duan, S. Liu, D. Ding, M. Baumgarten, M. Wagner, D. Schollmeyer, H. Xu and K. Müllen, New J. Chem., 2019, Advance Article , DOI: 10.1039/C8NJ06135A

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