Constructing linear or porous organic polymers with aggregation-induced emission (AIE)-active building blocks has garnered abundant attention owing to their successful manifestation of solid-state emissive properties, which are usually absent in traditional luminophores. Herein, three newly designed and synthesized aldehyde (–CHO)-containing tetraphenyl-buta-1,3-diene (TPB)-based AIEgens have been utilized to construct a series of thiazolothiazole-linked linear polymers and branched porous organic polymers (POPs), following a metal-free one-step synthesis. The newly synthesised monomers, linear polymers and POPs have been characterized thoroughly with ¹H, ¹³C and ¹³C MAS NMR, FTIR and MALDI-ToF studies. The AIE properties of the monomers and the linear polymers have been studied in a THF : water mixture, whereas temperature-dependent emission studies have been carried out in solution to understand the AIE behaviour of the insoluble porous polymers. The results suggest that the molecular dynamics in the excited states are distinctly different in the linear and the porous polymers. Nevertheless, all the newly synthesized polymers exhibit solid-state emission, with excellent luminescence (PLQY = 17.7%) in the yellow region being obtained for the porous polymer POP-1. This result for the first time demonstrates that TPB derivatives can act as a backbone for POPs with high luminescence efficiency in the solid state, creating immense scope for different applications in optoelectronics.

中文翻译：

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利用基于四苯基丁-1,3-二烯的 AIE 活性结构单元的噻唑并噻唑连接的固态发射线性多孔有机聚合物


用聚集诱导发射（AIE）活性结构单元构建线性或多孔有机聚合物因其成功表现出传统发光体通常不具备的固态发射特性而引起了广泛关注。在此，利用三种新设计和合成的含醛（-CHO）的四苯基丁二烯（TPB）基AIEgens构建了一系列噻唑并噻唑连接的线性聚合物和支化多孔有机聚合物（POP） ，遵循无金属一步合成。新合成的单体、线性聚合物和 POP 已通过¹ H、 ¹³ C 和¹³ C MAS NMR、FTIR 和 MALDI-ToF 研究进行了彻底表征。单体和线性聚合物的 AIE 性质已在 THF：水混合物中进行了研究，而温度依赖性发射研究已在溶液中进行，以了解不溶性多孔聚合物的 AIE 行为。结果表明，线性聚合物和多孔聚合物的激发态分子动力学明显不同。然而，所有新合成的聚合物都表现出固态发射，多孔聚合物 POP-1 在黄色区域获得了优异的发光（PLQY = 17.7%）。这一结果首次表明，TPB 衍生物可以作为 POP 的骨架，在固态下具有高发光效率，为光电领域的不同应用创造了巨大的空间。