Reduction of molecular aggregation and its application to the high-performance blue perylene-doped organic electroluminescent device

DOI PDF 被引用文献3件
  • B. X. Mi
    Center of Super-Diamond & Advanced Films (COSDAF), City University of Hong Kong, Hong Kong
  • Z. Q. Gao
    Center of Super-Diamond & Advanced Films (COSDAF), City University of Hong Kong, Hong Kong
  • C. S. Lee
    Center of Super-Diamond & Advanced Films (COSDAF), City University of Hong Kong, Hong Kong
  • S. T. Lee
    Center of Super-Diamond & Advanced Films (COSDAF), City University of Hong Kong, Hong Kong
  • H. L. Kwong
    Department of Biology and Chemistry, City University of Hong Kong, Hong Kong
  • N. B. Wong
    Center of Super-Diamond & Advanced Films (COSDAF), City University of Hong Kong, Hong Kong

書誌事項

公開日
1999-12-27
DOI
  • 10.1063/1.125534
公開者
AIP Publishing

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説明

<jats:p>A nonplanar derivative of perylene, 2,5,8,11-tetra-tertbutylperylene (TBPe), was synthesized via the Friedel–Crafts alkylation reaction. Electroluminescent (EL) devices were made using TBPe or perylene as a dopant in bis(2-methyl-8-quinolinolato)(para-phenylphenolato)aluminum(III) and their EL performance was compared. Similar to the device doped with the parent perylene molecule, the device doped with TBPe also emitted strongly in the blue. As the concentration of TBPe increased from 1% to 5%, the color coordinates in CIE 1931 chromaticity of the TBPe-doped device changed only slightly from (0.168,0.273) to (0.175,0.273), whereas the perylene-doped device exhibited a much larger shift from (0.165,0.196) to (0.178,0.252). The constancy of EL color and efficiency with respect to TBPe dopant concentration is attributable to diminishing molecular aggregation in the nonplanar perylene derivative, TBPe, due to the steric hindrance of the tert-butyl groups.</jats:p>

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