Mu Chaoqun, Zhang Zeyuan, Hou Yali, Liu Haifei, Ma Lingzhi, Li Xiaopeng, Ling Sanliang, He Gang, Zhang Mingming
State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China.
College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518055, P. R. China.
Angew Chem Int Ed Engl. 2021 May 25;60(22):12293-12297. doi: 10.1002/anie.202100463. Epub 2021 Apr 19.
The construction of solid-state fluorescent materials with high quantum yield and good processability is of vital importance in the preparation of organic light-emitting devices. Herein, a series of tetraphenylethylene (TPE)-based multicomponent emissive metallacages are prepared by the coordination-driven self-assembly of tetra-(4-pyridylphenyl)ethylene, cis-Pt(PEt ) (OTf) and tetracarboxylic ligands. These metallacages exhibit good emission both in solution and in the solid state because the coordination bonds and aggregation restrict the molecular motions of TPE synergistically, which suppresses the non-radiative decay of these metallacages. Impressively, one of the metallacages achieves very high fluorescence quantum yield (Φ =88.46 %) in the solid state, which is further used as the coatings of a blue LED bulb to achieve white-light emission. The study not only provides a general method to the preparation of TPE-based metallacages but also explores their applications as solid-state fluorescent materials, which will promote the future design and applications of metallacages as useful emissive devices.
构建具有高量子产率和良好加工性能的固态荧光材料对于有机发光器件的制备至关重要。在此，通过四（4-吡啶基苯基）乙烯、顺式-Pt(PEt ) (OTf) 和四羧酸配体的配位驱动自组装制备了一系列基于四苯乙烯（TPE）的多组分发光金属笼。这些金属笼在溶液和固态中均表现出良好的发光，因为配位键和聚集协同限制了 TPE 的分子运动，从而抑制了这些金属笼的非辐射衰减。令人印象深刻的是，其中一种金属笼在固态中实现了非常高的荧光量子产率（Φ = 88.46 %），并进一步用作蓝色发光二极管灯泡的涂层以实现白光发射。该研究不仅为基于 TPE 的金属笼的制备提供了一种通用方法，还探索了它们作为固态荧光材料的应用，这将推动金属笼作为有用发光器件的未来设计和应用。
