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Supramolecular Sky‐Blue Phosphorescent Polymer Iridium Complexes for Single‐Emissive‐Layer Organic Light‐Emitting Diodes
Author(s) -
Liang Aihui,
Dong Sheng,
Zhang Kai,
Xiao Xiao,
Huang Fei,
Zhu XuHui,
Cao Yong
Publication year - 2013
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201300254
Subject(s) - electroluminescence , iridium , phosphorescence , materials science , monomer , photoluminescence , oled , supramolecular chemistry , supramolecular polymers , polymer , photochemistry , glass transition , polymer chemistry , optoelectronics , layer (electronics) , molecule , nanotechnology , chemistry , fluorescence , optics , organic chemistry , composite material , physics , catalysis
Novel supramolecular phosphorescent polymers (SPPs) are synthesized as a new class of solution‐processable electroluminescent emitters. The formation of these SPPs takes advantage of the efficient non‐bonding assembly between bis(dibenzo‐24‐crown‐8)‐functionalized iridium complex monomer and bis(dibenzylammonium)‐tethered co‐monomer, which is monitored by 1 H NMR spectroscopy and viscosity measurements. These SPPs show good film morphology and an intrinsic glass transition with a T g of 94–116 °C. Noticeably, they are highly photoluminescent in solid state with quantum efficiency up to ca. 78%. The photophysical and electroluminescent properties are strongly dependent on the molecular structures of the iridium complex monomers.