Preparation of poly(2,5-diakoxy-1,4-benzene)

A dialkoxybenzene and dialkoxy technology, which is applied in the field of preparation of poly(2,5-dialkoxy-1,4-benzene), can solve the problems affecting material properties, the effect of polydialkoxy on Problems such as poor regioregularity of benzene, to achieve the effect of shortening the reaction time, improving the preparation technology and product quality, and eliminating the reaction step
CN1229409CInactive Publication Date: 2005-11-30WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV
Publication Date
2005-11-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing poly(2,5-dialkoxy-1,4-benzene) by solid-state oxidative coupling polymerization. The method uses p-dialkoxybenzene with an alkoxy carbon number of 1 to 18 as a monomer, uses metal chloride as a catalyst, and reacts at 5 to 65°C for 10 to 30 minutes under mixing and grinding to obtain a crude product; separation , and purification to obtain poly(2,5-dialkoxy-1,4-benzene). Because the present invention does not use a solvent during the polymerization reaction, the pollution of the environment is reduced; the production cost is reduced; the polymerization reaction time is short, only needing 10-30 minutes, so that the production efficiency is improved; the polymerization yield is improved, which can reach 90%; The polymer has good structural regioregularity, and all the benzene rings are linked in the para position. The fluorescence emission peak of the obtained polymer is about 405 nanometers, which belongs to the blue-violet light emission material. This conjugated polymer can be used in the manufacture of electroluminescent devices, organic thin film transistors and other photoelectric conversion devices.
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Description

technical field

[0001] The invention relates to a preparation method of poly(2,5-dialkoxy-1,4-benzene) whose main chain is composed of poly-p-phenylene and side chain has alkoxy groups. Background technique

[0002] Polyparaphenylene (PPP) and its derivatives are main chain conjugated polymers whose main chain is composed of phenyl links in para positions. It has broad applications in organic semiconductor thin film transistors, organic electroluminescent display devices and information technology. application prospects. In particular, it is used as a polymer film light-emitting layer in organic electroluminescent display devices, and has the advantages of low-voltage DC voltage drive, ultra-thin, and full curing. Synthetic main chain is made up of the conjugated polymer of polyparaphenylene, must introduce halogen atom on the benzene ring, by Ullmann reaction (Ullmann Reaction) or Suzuki reaction [Synthetic Communications, 11 (7), 513-519, 1981. ] Condensation to remove h...

Claims

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