My watch list  

Dibenzo[a,j]phenazine‐Cored Donor–Acceptor–Donor Compounds as Green‐to‐Red/NIR Thermally Activated Delayed Fluorescence Organic Light Emitters


A new family of thermally activated delayed fluorescence (TADF) emitters based on U‐shaped D‐A‐D architecture with a novel accepting unit has been developed. All investigated compounds have small singlet‐triplet energy splitting (ΔEST) ranging from 0.02 to 0.20 eV and showed efficient TADF properties. The lowest triplet state of the acceptor unit plays the key role in the TADF mechanism. OLEDs fabricated with these TADF emitters achieved excellent efficiencies up to 16 % external quantum efficiency (EQE).

Photophysik: Eine Serie U‐förmiger emissiver Donor‐Akzeptor‐Donor‐Verbindungen basierend auf dem Elektronenakzeptor Dibenzo[a,j]phenazin wurde entwickelt. Photophysikalische Studien zeigen die thermisch aktivierten, verzögerten Fluoreszenzeigenschaften der Verbindungen. Organische Leuchtdioden, die mit diesen neuen Materialien hergestellt wurden, erreichen externe Quantenausbeuten bis zu 16 %.

Authors:   Przemyslaw Data, Piotr Pander, Masato Okazaki, Youhei Takeda, Satoshi Minakata, Andrew P. Monkman
Journal:   Angewandte Chemie
Year:   2016
Pages:   n/a
DOI:   10.1002/ange.201600113
Publication date:   06-Apr-2016
More about Angewandte Chemie
  • News

    Hard Single-Molecule Magnets

    Magnets formed from a single molecule are of particular interest in data storage, since the ability to store a bit on every molecule could vastly increase the storage capacity of computers. Researchers have now developed a new molecular system with a particular magnetic hardness. The ingred ... more

    Cheaper Hydrogen Production

    Electrolytic hydrogen production powered by renewable energy is seen as an environmentally friendly means to ameliorate global climate and energy problems. In the journal Angewandte Chemie, a research team has now introduced a novel and inexpensive material for electrodes that may provide f ... more

    Overcoming False Optical Activity

    Many natural products are complicated organic molecules. Despite this complexity, scientists are usually able to investigate them using spectroscopic techniques. However, a team of researchers has now discovered that care should be taken using Raman spectroscopy to analyze certain chiral mo ... more

More about Wiley
Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE