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Chemphyschem. 2011 Apr 4;12(5):1010-5. doi: 10.1002/cphc.201000785. Epub 2011 Mar 8.

Electroluminescent properties of an electrochemically cross-linkable carbazole peripheral poly(benzyl ether) dendrimer.

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Department of Chemistry, University of Houston, Houston, TX 77204, USA.


The electroluminescent (EL) properties of a cross-linkable carbazole-terminated poly(benzyl ether) dendrimer, G(3)-cbz DN, doped into a PVK:PBD host matrix with a double-layer device configuration are investigated. Different concentrations of the guest material can control device efficiency, related to chromaticity of white emission and the origin of excited-state complexes occurring between hole-transporting carbazole units (PVK or G(3)-cbz DN) and electron-transporting oxadiazole (PBD). Two excited states (exciplex and electroplex) generated at the interfaces of PVK/G(3)-cbz DN and PBD result in competitive emission, exhibiting a broad band in the EL spectra.


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