分子主链含苝结构聚芳酯的合成及性能

Synthesis and properties of polyarylates containing perylene units in the main chain

摘要:

以3,9-苝二酰氯、双酚A、对苯二甲酰氯和间苯二甲酰氯为原料，通过相转移界面缩聚法合成出一系列苝结构单元含量不同的聚芳酯 PAR-Pn(n分别为0.05%、0.10%、0.15%、0.20%，表示3,9-苝二酰氯的含量，以双酚A的物质的量为基准计算得到，下同)。通过DSC、TGA、DMA、UV-Vis及PL对材料的热稳定性、动态力学性能及光学性能进行了研究。结果表明，所制备的聚芳酯在氮气氛围中起始分解温度均在468 ℃以上，由DMA测得的玻璃化转变温度均在211 ℃以上，具有较高的耐热性。所有聚芳酯均具有光致发光的特性，发光峰位于480~540 nm，且荧光强度随苝含量的增加而增强。另外，所制备的聚芳酯在常用有机试剂中均具有良好的溶解性，为湿法制备聚合物薄膜提供了可能性。

Abstract:

A series of polyarylates PAR-Pn(n is 0.05%, 0.10%, 0.15% and 0.20% respectively, indicating the content of 3,9-perylene diacyl chloride, calculated based on the mount of bisphenol A, the same below) with varied ratios of perylene unit were synthesized by means of interfacial condensation of perylene-3,9-dichloride, bisphenol A, isophthalic chloride and terephthaloyl chloride. The thermal stability and optical properties of the polyarylates were characterized by DSC, TGA, DMA, UV-vis and PL. The initial thermal decomposition temperatures and the glass transition temperatures of the polyarylates are above 468 ℃ and 211 ℃, respectively, which implies the polyarylates have high thermal stability. Furthermore, all the polyarylates have photoluminescent characteristics with photoluminescent peaks at 480~540 nm. The fluorescence intensity increases with the increase of perylene ratio. In addition, the polyarylates have good solubility in common organic reagents, which provides the possibility of wet preparation of polymer films.