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Elastic organic crystals with ultralong phosphorescence for flexible anti-counterfeiting
npj Flexible Electronics ( IF 12.3 ) Pub Date : 2021-08-16 , DOI: 10.1038/s41528-021-00117-9
Kaiwei Huang 1 , Lulu Song 1 , Kun Liu 1 , Anqi Lv 1 , Manjeet Singh 1 , Kang Shen 1 , Jing Shen 1 , Jiamin Wang 1 , Hongchen Wang 1 , Huifang Shi 1 , Huili Ma 1 , Mingxing Gu 1 , Gengzhi Sun 1 , Wei Yao 1 , Zhongfu An 1 , Wei Huang 1, 2
Affiliation  

Ultralong organic phosphorescence (UOP) crystals have attracted increased attention due to the distinct photophysical property of a long-lived lifetime. However, organic crystals are generally brittle, leading to a serious problem for their application in flexible technology. Herein, we report three types of elastic organic crystals (EOCs) with ultralong phosphorescence via introducing halogen atoms (Cl, Br, I) into π-conjugated phosphorescent molecules. Especially, the crystal containing iodine atoms displayed both excellent elasticity (ε = 3.01%) and high phosphorescent efficiency (ΦPh = 19.1%) owing to the strong halogen bonds. Taking advantage of its highly efficient UOP and excellent elasticity, we successfully used a DCz4I crystal for anti-counterfeiting application. These findings may provide guidance for the development of elastic crystals with afterglow and expand the scope of potential applications on flexible materials.



中文翻译:

具有超长磷光的弹性有机晶体用于柔性防伪

由于长寿命的独特光物理特性,超长有机磷光 (UOP) 晶体引起了越来越多的关注。然而,有机晶体普遍较脆,导致其在柔性技术中的应用存在严重问题。在此,我们通过将卤素原子(Cl、Br、I)引入 π 共轭磷光分子,报告了三种具有超长磷光的弹性有机晶体(EOC)。特别是,含有碘原子的晶体同时显示优异的弹性(ε  = 3.01%)和高的磷光效率(Φ博士 = 19.1%)由于强卤键。利用其高效的UOP和出色的弹性,我们成功地将DCz4I晶体用于防伪应用。这些发现可能为开发具有余辉的弹性晶体提供指导,并扩大在柔性材料上的潜在应用范围。

更新日期:2021-08-16
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