Synthesis and Properties of a Novel Red Electroluminescent Conjugated Polymer Containg Naphthothiadiazole

Chem. J. Chinese Universities

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Synthesis and Properties of a Novel Red Electroluminescent Conjugated Polymer Containg Naphthothiadiazole

HUANG Zhe, ZHANG Yong, ZENG Wen-Jin, XU Wei, YANG Jian, PENG Jun-Biao, CAO Yong

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

Received:2006-07-13 Revised:1900-01-01 Online:2007-03-10 Published:2007-03-10
Contact: CAO Yong

Abstract

Abstract: A series of aminoalkyl-substituted polyfluorene copolymers with 4,7-dithien-2-yl-2,1,3- naphtho-thiadiazole(SNS) with different contents were synthesized by Suzuki coupling reaction. The polymers are soluble in organic solvent, such as chloroform, toluene. All the polymers emit red light (more than 700 nm) under UV excitation in the solid state. It was found that the PFN-SNS polymers show a good device performance when high work-function metals, such as Al, are used as the electron-injection cathode replacing conventional low work-function cathodes such as Ca and Ba. The maximum external quantum efficiency is more than 1.3% with Al as cathode.

Key words: High-work-function metal, Conjugated polymer, Electroluminescence

CLC Number:

O631

TrendMD:

HUANG Zhe, ZHANG Yong, ZENG Wen-Jin, XU Wei, YANG Jian, PENG Jun-Biao, CAO Yong. Synthesis and Properties of a Novel Red Electroluminescent Conjugated Polymer Containg Naphthothiadiazole[J]. Chem. J. Chinese Universities, doi: .

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Synthesis and Properties of a Novel Red Electroluminescent Conjugated Polymer Containg Naphthothiadiazole

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