Dendritic polyphenylene framework as a light-harvesting shell for highly emissive [2.2]Paracyclophane core
作者:Irina Yu. Krasnova、Dmitrii Yu. Antonov、Alexey V. Shapovalov、Zinaida B. Shifrina
DOI:10.1016/j.polymer.2021.124227
日期:2021.11
New polyphenylene type dendrimers of two generations were developed through attaching the aromatic dendron units to the highly emissive conjugated 4,7,12,15-tetra(phenylethynyl)[2.2]paracyclophane core via the Diels-Alder reaction. The polyphenylene moieties in dendrimers efficiently absorbed the UV light, followed by the energy transfer to the [2.2]paracyclophane core, resulting in photoluminescence
通过 Diels-Alder 反应将芳香族树枝状单元连接到高发射性共轭 4,7,12,15-四(苯乙炔基)[2.2] 对环芳核,开发了两代新型聚苯型树枝状大分子。树枝状聚合物中的聚亚苯基部分有效地吸收了紫外光,然后将能量转移到 [2.2] 对环芳烷核心,导致核心单元产生高量子产率的光致发光,并展示了有效的分子内能量转移。使用类似于各自树枝状聚合物的成分的母体模型化合物,对具有 [2.2] 对环芳烷核心的聚苯撑树枝状聚合物的光学性质进行了详细分析。由于对 4、7、12、