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π-Conjugated Aromatic Enynes as a Single-Emitting Component for White Electroluminescence
Abstract
By use of the organolanthanide catalysts Me2Si(C5Me4)(NAr)Lu(CH2SiMe3)(THF) and (C5Me5)2LaCH(SiMe3)2, carbazole-substituted phenyl enynes (Z)-CPEY and (E)-CPEY were synthesized, respectively, with excellent regio- and stereoselectivity through the catalytic dimerization of the corresponding terminal alkyne. These new pi-conjugated compounds, in particular, the (E)-enyne isomer (E)-CPEY, act as an excellent single-emitting component for white organic light-emitting devices (WOLEDs), as a result of combination of the blue emission from an isolated molecule with the longer-wavelength emissions (green and orange-red) from excimers. The (E)-CPEY-based double-layer device emitted almost pure white light with CIE coordinates of (0.32, 0.33), maximum brightness of 1395 cd m-2, and maximum current efficiency of 2.07 cd A-1. This is perhaps the purest white emission ever reported for a single-emitting-component WOLED. The quality of the white emission remained almost unchanged under varying driving voltages, demonstrating an advantageous potential of single-emitting-component WOLEDs.
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Citations
Cited by
Wong, W.-Y., & Ho, C.-L. (2009) · Journal of Materials Chemistry · doi:10.1039/b819943d · Cited by 521
Xie, Z., Chen, C., Xu, S., Li, J., Zhang, Y., Liu, S., Xu, J., & Chi, Z. (2015) · Angewandte Chemie International Edition · doi:10.1002/anie.201502180 · Cited by 489
σ-Bond Metathesis: A 30-Year Retrospective
Waterman, R. (2013) · Organometallics · doi:10.1021/om400760k · Cited by 302
Luo, M., Li, X., Ding, L., Baryshnikov, G., Shen, S., Zhu, M., Zhou, L., Zhang, M., Lu, J., Ågren, H., et al. (2020) · Angewandte Chemie International Edition · doi:10.1002/anie.202009077 · Cited by 89
Metadata
- Authors
- Liu, Y., Nishiura, M., Wang, Y., & Hou, Z.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-04-07
- Volume
- 128
- Issue
- 17
- Pages
- 5592-5593
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1964828238
- Cited by
- 509
- References
- 0
- FWCI
- 26.32
- Type
- journal article
- Language
- en
- Open access
- closed
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