The enhancement of photoluminescence through formation of molecular aggregates in organic oligomers and conjugated organic polymers is reviewed. A historical contextualization of aggregation-induced emission (AIE) phenomena is presented. This includes the loose bolt or free rotor effect and J-aggregation phenomena, and discusses their characteristic features, including structures and mechanisms. The basis of both effects is examined in key molecules, with a particular emphasis on the AIE effect occurring in conjugated organic polymers with a polythiophene (PT) skeleton with triphenylethylene (TPE) units. Rigidification of the excited state structure is one of the defining conditions required to obtain AIE, and thus, by changing from a flexible ground state to rigid (quinoidal-like) structures, oligo and PTs are among the most promising emerging molecules alongside with the more extensively used TPE derivatives. Molecular structures moving away from the domination of aggregation-caused quenching to AIE are presented. Future perspectives for the rational design of AIEgen structures are discussed.

综述了通过在有机低聚物和共轭有机聚合物中形成分子聚集体来增强光致发光的方法。提出了聚集诱导排放（AIE）现象的历史背景。这包括松动的螺栓或自由转子效应和J聚集现象，并讨论了它们的特征，包括结构和机理。在关键分子中检查了这两种作用的基础，特别强调了在具有带三苯乙烯（TPE）单元的聚噻吩（PT）骨架的共轭有机聚合物中发生的AIE效应。激发态结构的刚性化是获得AIE所需要的定义条件之一，因此，通过从柔性基态变为刚性（类喹啉）结构，寡聚和PT以及最广泛使用的TPE衍生物是最有前途的新兴分子。提出了从聚集引起的猝灭的主导向AIE移动的分子结构。讨论了AIEgen结构合理设计的未来前景。