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Citation: NIE Hai, TANG Xian-Zhong, LI Yuan-Xun. Synthesis of ChargeTransporting Polymers Containing TPD Units and Their Application in Electroluminescent Devices[J]. Chinese Journal of Applied Chemistry, ;2004, 21(4): 415-418. shu

Synthesis of ChargeTransporting Polymers Containing TPD Units and Their Application in Electroluminescent Devices

1.
School of Microelectronics and Solid-State Electronics, University of Electronics Science and Technology of China, Chengdu 610054

Corresponding author: NIE Hai,
Received Date: 27 June 2003
Available Online: 15 October 2003

Monomer N,N'-diphenyl-N,N'-bis(4-alkylphenyl)-benzidine(alkyl-TPD) prepared by Ullmann reaction of N,N'-diphenylbenzidine with 1-halogen-4-alkylbenzene using 18-crown-6 as phase transfer catalyst and o-dichlorobenzene as solvent was reacted with 1, 4-bischloromethylbenzene(BCB) or 9, 10-bischloromethylanthracene(BCA) by condensation polymerization through Friedel-Crafts reaction in chlorobenzene, using SnCl₄ or AlCl₃ as catalysts under nitrogen atmosphere at 40~80℃ for 112h. TPD units were introduced into the main chain of the polymer. A series of the novel EL polymer with charge transporting property were synthesized in high yield(up to 96%) and with high molecular weight(with maximum value 2.9×10⁵). All polymers had higher T_g than that of TPD itself(maximum value of T_g was 245℃). Their properties in electroluminesent devices have been investigated. The results showed EL wavelength is moved 60 nm toward infrared region as compared with that of TPD.
- poly-TPD,
- synthesis,
- organic electroluminescent property
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