支化聚吡咯甲烷的制备与光学性能

聚吡咯的溶解性较差,为其光学性能研究带来了诸多困难.将吡咯类和苯甲醛类单体通过缩聚反应可制备出具有较好溶解性的聚吡咯甲烷发光材料.以吡咯和对二甲氨基苯甲醛为原料,对苯二甲醛为支化单体,采用溶液共缩聚法制备了不同原料比的支化聚吡咯甲烷,并对其光学性能进行了研究.结果 表明,支化聚吡咯甲烷的热稳定性较好,高于300℃后出现...

Preparation and optical properties of branched polypyrrole methanes

The poor solubility of polypyrrole brings many difficulties to the study of its optical properties.The polypyrrole methane luminescent materials with good solubility can be prepared via polycondensation of pyrrole and benzaldehyde monomers.A series of branched polypyrrole methanes were fabricated by solution copolycondensation using pyrrole and 4-dimethylaminobenzaldehyde as raw materials,terephthaldicarboxaldehyde as branched monomer,and their optical performances were investigated in detail.Results indicate that the branched polypyrrole methanes have good thermal stability,and significant degradation occurs when the temperature is higher than 300℃.Under the excitation of ultraviolet light near 275,319,and 370 nm,the branched polypyrrole methanes can produce visible light of about 430 nm,which are blue-purple luminescent materials.The amount of branched monomer has little effect on the luminescent behavior of the soluble branched polypyrrole methanes.The branched polypyrrole methanes have potential application in fields such as polymer light-emitting diodes.