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Preserving High-Efficiency Luminescence Characteristics of an Aggregation-Induced Emission-Active Fluorophore in Thermostable Amorphous Polymers.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-06-29 , DOI: 10.1021/acsami.0c08480 Zhuxin Zhou 1, 2 , Yubo Long 1 , Xiaojie Chen 1 , Tingting Yang 1 , Juan Zhao 1 , Yue Meng 1 , Zhenguo Chi 1 , Siwei Liu 1 , Xudong Chen 1 , Matthew P Aldred 3 , Jiarui Xu 1 , Yi Zhang 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-06-29 , DOI: 10.1021/acsami.0c08480 Zhuxin Zhou 1, 2 , Yubo Long 1 , Xiaojie Chen 1 , Tingting Yang 1 , Juan Zhao 1 , Yue Meng 1 , Zhenguo Chi 1 , Siwei Liu 1 , Xudong Chen 1 , Matthew P Aldred 3 , Jiarui Xu 1 , Yi Zhang 1
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Luminophores usually suffer from luminescent quenching when introduced into a polymer backbone or side chain, which leads to the inefficient luminescence or even no luminescence of the polymer. In this work, alicyclic imide rings were found to be capable of balancing the donor–acceptor properties between the rigid spacer and the aggregation-induced emission-active fluorophore in light-emitting polymers. Along with the nonplanar and rigid emitter, the suppressed intramolecular charge-transfer effect and interchain disturbance can efficiently preserve the luminescence characteristics of the active center, resulting in high solid-state photoluminescence quantum yields of up to 89%. The amorphous polyimides exhibit excellent thermal properties, such as high glass transition temperature (Tg) values (398 °C) and high thermal decomposition temperature (Td) values (538 °C). As far as we know, these luminescent polymer materials are of excellent heat resistance with the highest luminescence efficiency reported. The results have significant impact for the precise prediction of the optical properties of light-emitting polymers by appropriate monomer design, providing controllable ways for synthesizing high thermal stability polymeric materials with efficient fluorescence properties.
中文翻译：
在热稳定的非晶态聚合物中保持聚集诱导的发射活性荧光团的高效发光特性。
发光体在引入聚合物主链或侧链时通常遭受发光猝灭，这导致聚合物的发光效率低下或什至没有发光。在这项工作中，发现脂环族酰亚胺环能够平衡刚性间隔基与发光聚合物中聚集诱导的发射活性荧光团之间的供体-受体性质。与非平面和刚性发射体一起，抑制的分子内电荷转移效应和链间干扰可以有效地保留活性中心的发光特性，从而导致高达89％的高固态光致发光量子产率。无定形聚酰亚胺具有出色的热性能，例如高玻璃化转变温度（T g）值（398°C）和高热分解温度（T d）值（538°C）。据我们所知，这些发光聚合物材料具有优异的耐热性，据报道具有最高的发光效率。结果对通过适当的单体设计精确预测发光聚合物的光学性能具有重要影响，为合成具有有效荧光性能的高热稳定性聚合物材料提供了可控制的方法。
更新日期：2020-07-29
中文翻译：
在热稳定的非晶态聚合物中保持聚集诱导的发射活性荧光团的高效发光特性。
发光体在引入聚合物主链或侧链时通常遭受发光猝灭，这导致聚合物的发光效率低下或什至没有发光。在这项工作中，发现脂环族酰亚胺环能够平衡刚性间隔基与发光聚合物中聚集诱导的发射活性荧光团之间的供体-受体性质。与非平面和刚性发射体一起，抑制的分子内电荷转移效应和链间干扰可以有效地保留活性中心的发光特性，从而导致高达89％的高固态光致发光量子产率。无定形聚酰亚胺具有出色的热性能，例如高玻璃化转变温度（T g）值（398°C）和高热分解温度（T d）值（538°C）。据我们所知，这些发光聚合物材料具有优异的耐热性，据报道具有最高的发光效率。结果对通过适当的单体设计精确预测发光聚合物的光学性能具有重要影响，为合成具有有效荧光性能的高热稳定性聚合物材料提供了可控制的方法。
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