Synthesis, structure, photo- and electroluminescent properties of bis(2-phenylpyridinato-N,c2′)[2-(2′-tosylaminophenyl)benzoxazolato-N,N′]iridium(III)

Add time:08/03/2019    Source:sciencedirect.com

A new highly luminescent iridium complex, bis(2-phenylpyridine-N,C2′)[2-(2′-tosylaminophenyl)benzoxazole-N,N′]iridium(III) [Ir(ppy)2(TAPBO)] (TAPBO- 2-(2′-tosylaminophenyl)benzoxazole) has been synthesized and its molecular structure determined using single crystal X-ray diffraction analysis. The Ir(III) complex displayed intense yellow photophosphorescence emission that manifested its potential for organic electroluminescence. Photo- and electroluminescent properties of the OLEDs fabricated on the basis of [Ir(ppy)2(TAPBO)] with doping concentration of Ir(ppy)2(TAPBO) varied from 3 to 20 wt% have been investigated. The OLED with 9 wt% Ir(ppy)2(TAPBO) exhibited maximum luminance of 9000 cd m−2 at 180 mA/cm−2 and had sufficiently low turn-on voltage of ca. 6 V.

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