Preparation method of bis-thienyl pyrrolo-[3,4-c] pyrrole-1,4-diketone and (hybrid) arene copolymer

Abstract

The invention relates to preparation method of a bis-thienyl pyrrolo-[3,4-c] pyrrole-1,4-diketone and (hybrid) arene copolymer, which belongs to the technical field of chemical preparation of high-molecular polymer materials. According to the preparation method, under an appropriate condition, bis-thienyl pyrrolo-[3,4-c] pyrrole-1,4-diketone as a raw material A and a dibromo-(hybrid) aromatic compound as a raw material B are directly react to obtain a target copolymer. Compared with the traditional method, the preparation method provided by the invention has obvious advantages, prevents the preparation link of an organic metal reagent, decreases the preparation steps, increases the overall yield, reduces the cost, prevents a great amount of toxic and harmful organic metal reagent wastes from being generated and is more conductive to the industrialized production.

Description

technical field [0001] The invention relates to a preparation method of a bisthienylpyrrolo[3,4-c]pyrrole-1,4-dione and (hetero)arene copolymer, which belongs to the chemical preparation technology of high molecular polymer materials. Background technique [0002] Pyrrolo[3,4-c]pyrrole-1,4-dione polymers have a special planar molecular structure, which can form good intermolecular packing, and have unique optoelectronic properties, such as low energy gap, electron / hole High mobility, large molar absorptivity, especially strong absorption in the near-infrared spectral region, strong fluorescence emission, high quantum yield, and good light and thermal stability, so it is widely used in biochemistry, medicine, analytical chemistry and materials Science and other fields have been widely concerned and applied. In recent years, the use of this type of polymer to develop various photovoltaic functional materials has become a very active field at home and abroad. For example, in ...

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Problems solved by technology

However, this type of traditional coupling reaction has obvious disadvantages: (1) From the starting raw material aromatic (hetero) ring to the coupling product, there are at least three organic synthesis steps, involving the synthesis of intermediate C-X compounds and the synthesis of C-M compounds. Synthesis and coupling reaction, many steps, long route, complex organic synthesis operation, harsh conditions, and low total yield; (2) one of the reaction intermediates is an organometallic reagent, which is difficult to prepare, except for raw materials (boric acid reagent, organic tin Reagents, etc.) are expensive, the steps are cumbersome, the conditions are harsh (such as anhydrous and oxygen-free environment, etc.), the operation difficulty increases, the total yield is also reduced, and the cost is increased; at the same time, the raw material organometallic reagents have poor stability, and some cannot withstand acceptance. Some of the following coupling reactions cannot even be prepared and exist stably, which greatly limits the breadth of raw materials and products, and limits the possibility of molecular modification and property adjustment of materials; (3) traditional coupling reactions It will produce an equivalent amount of metal organic reagent waste, such as tin reagent waste, poisoning human and animal health and causing environmental pollution

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