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Publication Detail
Linear and Cyclic Porphyrin Hexamers as Near-Infrared Emitters in Organic Light-Emitting Diodes
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Fenwick O, Sprafke JK, Binas J, Kondratuk DV, Di Stasio F, Anderson HL, Cacialli F
  • Publisher:
    AMER CHEMICAL SOC
  • Publication date:
    06/2011
  • Pagination:
    2451, 2456
  • Journal:
    NANO LETT
  • Volume:
    11
  • Issue:
    6
  • Print ISSN:
    1530-6984
  • Language:
    EN
  • Keywords:
    Porphyrin, OLED, organic electronics, IR, near-infrared, ENERGY-GAP LAW, CONJUGATED POLYROTAXANES, EFFICIENCY CALCULATIONS, OPTICAL SPECTROSCOPY, MOLECULAR WIRES, MU-M, ELECTROLUMINESCENCE, EMISSION, SEMICONDUCTORS, DEVICES
  • Addresses:
    Anderson, HL
    Univ Oxford
    Dept Chem
    Chem Res Lab
    Oxford
    OX1 3TA
    England

    UCL
    London Ctr Nanotechnol
    London
    WC1E 6BT
    England
Abstract
Here we report organic light-emitting diodes incorporating linear and cyclic porphyrin hexamers which have red-shifted emission (lambda(PL) = 873 and 920 nm, respectively) compared to single porphyrin rings as a consequence of their extended pi-conjugation. We studied the photoluminescence and electroluminescence of blends with poly(9,9'-dioctylfluorene-alt-benzothiadiazole), demonstrating a high photoluminescence quantum efficiency of 7.7% for the linear hexamer when using additives to prevent aggregation and achieving high color purity near-infrared electroluminescence.
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