New cardo poly(arylene ether ketone amide)s were synthesized by heterogeneous palladium-catalyzed carbonylative polycondensation of aromatic diiodides with ether–ketone linkages, aromatic diamines bearing cardo groups, and carbon monoxide. Polymerizations were conducted in N , N -dimethylacetamide (DMAc) at 120 °C in the presence of a bidentate phosphino-functionalized magnetic nanoparticles-immobilized palladium complex [Fe 3 O 4 @SiO 2 -2P-PdCl 2 ] and 1,8-diazabicyclo[5,4,0]-7-undecene (DBU), yielding a series of cardo poly(arylene ether ketone amide)s with inherent viscosities up to 0.77 dL/g. All the polymers were readily soluble in various dipolar aprotic solvents at room temperature. These polymers showed good thermal stability with the glass transition temperature of 223–289 °C, the temperature at 5% weight loss of 441–464 °C in nitrogen. These cardo poly(arylene ether ketone amide)s could afford transparent, flexible, and strong films by solution-casting with good tensile properties. These polymer films exhibited lower dielectric constants, lower water uptakes, and higher optical transparency. Furthermore, this heterogeneous palladium catalyst can facilely be separated from the reaction mixture by simply applying an external magnet and recycled at least eight times with almost consistent activity.

中文翻译：

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通过多相钯催化缩聚芳族二碘化物、含cardo基团的芳族二胺和CO合成cardo聚（亚芳基醚酮酰胺）

新的cardo聚（亚芳基醚酮酰胺）是通过多相钯催化的芳族二碘化物与醚-酮键、带有cardo基团的芳族二胺和一氧化碳的羰基缩聚反应合成的。在二齿膦基官能化磁性纳米粒子固定的钯配合物 [Fe 3 O 4 @SiO 2 -2P-PdCl 2 ] 和 1,8- 存在下，在 N , N - 二甲基乙酰胺 (DMAc) 中于 120 °C 进行聚合二氮杂双环 [5,4,0]-7-十一烯 (DBU)，产生一系列卡多聚（亚芳基醚酮酰胺），其特性粘度高达 0.77 dL/g。所有聚合物在室温下均易溶于各种偶极非质子溶剂。这些聚合物显示出良好的热稳定性，玻璃化转变温度为 223-289°C，在氮气中重量损失 5% 时的温度为 441-464°C。这些cardo聚（亚芳基醚酮酰胺）可以通过溶液浇铸提供具有良好拉伸性能的透明、柔韧和坚固的薄膜。这些聚合物薄膜表现出较低的介电常数、较低的吸水率和较高的光学透明度。此外，这种多相钯催化剂可以通过简单地使用外部磁铁轻松地从反应混合物中分离出来，并以几乎一致的活性循环至少八次。