Tsiko Uliana, Fidelius Jannis, Kaiser Sebastian, Thomas Heidi, Bui Thi Yana, Weigand Jan J, Grazulevicius Juozas V, Schellhammer Karl Sebastian, Reineke Sebastian
Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP), Technische Universität Dresden, Dresden, Germany.
Chair of Inorganic Molecular Chemistry, Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden, Germany.
Commun Chem. 2025 Sep 10;8(1):274. doi: 10.1038/s42004-025-01620-0.
Purely organic materials showing efficient and persistent emission via room temperature phosphorescence (RTP) allow the design of minimalistic yet powerful technological solutions for sensing, bioimaging, information storage, and safety applications using the photonic design principle of digital luminescence. Although several promising materials exist, a deep understanding of the underlying structure-property relationship and, thus, development of rational design strategies are widely missing. Some of the best purely organic emitters follow the donor-acceptor-donor design motif. In this study, the influence of the acceptor unit on the photophysical properties is systematically analyzed by synthesizing and characterizing variations of the RTP emitter 4,4'-dithianthrene-1-yl-benzophenone (BP-2TA). The most promising candidates are also tested in programmable luminescent tags as a potential application field for information storage. While no significant influence by the electrophilicity index of the acceptor moiety on the RTP emission is observed, the results support the design of molecules with pronounced hybridization as obtained for the newly synthesized emitter demonstrating superior RTP efficiency combined with improved stability.
通过室温磷光（RTP）实现高效且持久发光的纯有机材料，利用数字发光的光子设计原理，为传感、生物成像、信息存储及安全应用等领域设计出简约而强大的技术解决方案。尽管已有几种有前景的材料，但对其潜在的结构-性质关系的深入理解以及合理设计策略的开发仍普遍缺失。一些最佳的纯有机发光体遵循供体-受体-供体设计模式。在本研究中，通过合成和表征RTP发光体4,4'-二噻蒽-1-基-二苯甲酮（BP-2TA）的变体，系统分析了受体单元对光物理性质的影响。还在可编程发光标签中测试了最有前景的候选物，作为信息存储的潜在应用领域。虽然未观察到受体部分的亲电指数对RTP发射有显著影响，但结果支持设计具有明显杂化的分子，如新合成的发光体，其表现出卓越的RTP效率并具有更高的稳定性。
