Aromatic Phosphonates: A Novel Group of Emitters Showing Blue Ultralong Room Temperature Phosphorescence.,Advanced Materials

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Aromatic Phosphonates: A Novel Group of Emitters Showing Blue Ultralong Room Temperature Phosphorescence.
Advanced Materials ( IF 27.4 ) Pub Date : 2020-04-02 , DOI: 10.1002/adma.202000880
Heidi Thomas ₁ , Dominik L Pastoetter ₂ , Max Gmelch ₁ , Tim Achenbach ₁ , Annika Schlögl ₁ , Marine Louis ₁ , Xinliang Feng ₂ , Sebastian Reineke ₁

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In recent years, there has been a growing interest in purely organic materials showing ultralong room-temperature phosphorescence with lifetimes in the range of seconds. Still, the longest known phosphorescence lifetimes are only achieved with crystalline systems so far. Here, a rational design of a completely new family of halogen-free organic luminescent derivatives in amorphous matrices, displaying both conventional fluorescence and phosphorescence is reported. Hydrogen bonding between the newly developed emitters and an ethylene-vinyl alcohol copolymer (Exceval) matrix, which efficiently suppresses vibrational dissipation, enables bright long-lived phosphorescence with lifetimes up to 2.6 s at around 480 nm. The importance of the chosen matrix is shown as well as the implementation in an organic programmable luminescent tag.

中文翻译：

芳族膦酸酯：一组新颖的发射体，显示蓝色超长室温磷光。

近年来，人们越来越感兴趣的是具有超长室温磷光且寿命在几秒钟范围内的纯有机材料。迄今为止，已知的最长磷光寿命仅通过晶体系统才能实现。在此，报道了在非晶态基质中显示常规荧光和磷光的全新的无卤素有机发光衍生物家族的合理设计。新开发的发射器与乙烯-乙烯醇共聚物（Exceval）基体之间的氢键可有效抑制振动耗散，可实现明亮的长寿命磷光，其在480 nm处的寿命高达2.6 s。显示了所选矩阵的重要性以及在有机可编程发光标签中的实现。

更新日期：2020-04-02

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