四苯基乙烯9,10-二苯基蒽衍生物——合成与光物理性质
Tetraphenylethene 9,10-Diphenylanthracene Derivatives - Synthesis and Photophysical Properties.
作者信息
Gao Can, Seow Jia Yi, Zhang Bolong, Hall Christopher R, Tilley Andrew J, White Jonathan M, Smith Trevor A, Wong Wallace W H
机构信息
School of Chemistry ARC Centre of Excellence in Exciton Science, The University of Melbourne, Parkville, Victoria, 3010, Australia.
School of Chemistry Bio21 Institute, The University of Melbourne, Parkville, Victoria, 3010, Australia.
出版信息
Chempluschem. 2019 Jun;84(6):746-753. doi: 10.1002/cplu.201900100. Epub 2019 Apr 11.
A series of tetraphenylethene 9,10-diphenylanthracene (TPE-DPA) derivatives have been synthesized, and their photophysical properties studied. Photoluminescence measurements in PMMA, neat films and nanoparticle dispersions reveal that different aggregation states are formed, which leads to different photophysical behavior. The triplet excited state properties were studied using Pt(II) octaethylporphyrin (PtOEP) as triplet sensitizer. Upconverted emission from the DPA moiety is observed in nanoparticle dispersions of each derivative. A higher upconverted emission intensity is observed in aerated (compared to deaerated) solutions of the derivatives following irradiation, which is attributed to oxidation of the TPE moiety. These results provide valuable insight for the design of AIE luminogens for triplet-triplet annihilation upconversion (TTA-UC).
已合成了一系列四苯乙烯-9,10-二苯基蒽（TPE-DPA）衍生物，并对其光物理性质进行了研究。在聚甲基丙烯酸甲酯（PMMA）、纯薄膜和纳米颗粒分散体中的光致发光测量表明，形成了不同的聚集态，这导致了不同的光物理行为。使用八乙基铂（II）卟啉（PtOEP）作为三重态敏化剂研究了三重激发态性质。在每种衍生物的纳米颗粒分散体中都观察到了来自DPA部分的上转换发射。在辐照后的衍生物的曝气（与脱气相比）溶液中观察到更高的上转换发射强度，这归因于TPE部分的氧化。这些结果为用于三重态-三重态湮灭上转换（TTA-UC）的聚集诱导发光剂的设计提供了有价值的见解。
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