Synthesis and Electrophosphorescent Properties of Hyperbranched Polymers with Iridium Complex as Core and Poly (para-phenylene) as Branch

doi:10.3724/SP.J.1095.2010.90236

Chinese Journal of Applied Chemistry ›› 2010, Vol. 27 ›› Issue (03): 262-266.DOI: 10.3724/SP.J.1095.2010.90236

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Synthesis and Electrophosphorescent Properties of Hyperbranched Polymers with Iridium Complex as Core and Poly (para-phenylene) as Branch

YUAN Pan, HU Su-Jun, YING Lei, YANG Wei*

(Institute of Polymer Optoelectronic Materials and Devices,Key Laboratory of Special Functional
Materials of Ministry of Education,South China University of Technology,Guangzhou 510640)

Received:2009-03-31 Revised:2009-08-20 Published:2010-03-10 Online:2010-03-10
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Abstract

Abstract:

Novel hyperbranched poly(para-phenylene)s were synthesized by Suzuki polycondensation with Ir complex as core and poly(p-phenylene) as branch. The emission from the host was completely quenched when the content of Ir complex in the polymer was more than 0.5%, leading the EL spectra of the polymers to show only one main emission at 520 nm, which indicated that there was an efficient energy transfer between the host and the guest. The device based on the copolymer with 1% molar fraction of Ir complex in the polymer had a peak luminous efficiency(LE) of 2.89 cd/A, and the maximal luminance of 1 689 cd/m2 with the configuration of ITO/PEDOT/emissive layer/Ba/Al.

Key words: Ir complex,hyperbranched poly(p-phenylene),green emission

CLC Number:

O625

YUAN Pan, HU Su-Jun, YING Lei, YANG Wei*. Synthesis and Electrophosphorescent Properties of Hyperbranched Polymers with Iridium Complex as Core and Poly (para-phenylene) as Branch[J]. Chinese Journal of Applied Chemistry, 2010, 27(03): 262-266.

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Synthesis and Electrophosphorescent Properties of Hyperbranched Polymers with Iridium Complex as Core and Poly (para-phenylene) as Branch

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