Wide-Range Color-Tunable Organic Phosphorescence Materials for Printable and Writable Security Inks
Wide-Range Color-Tunable Organic Phosphorescence Materials for Printable and Writable Security Inks
复制标题
用于可印刷和可写安全油墨的宽范围颜色可调有机磷光材料
DOI：
10.1002/anie.202003585
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发表时间：
2020-07-07
影响因子：
16.6
通讯作者：
Dong, Yuping
中科院分区：
文献类型：
--
作者：
Lei, Yunxiang;Dai, Wenbo;Dong, Yuping
具有长寿命，颜色可调磷光的有机材料在光学记录，防伪和生物成像方面具有潜在的用途。在此，我们开发了一系列新的主客体有机荧光粉，允许从青色（502 nm）到橙红色（608 nm）的动态颜色调整。客体材料用于调节磷光颜色，而主体材料与客体相互作用以激活磷光发射。这些有机荧光粉的超长寿命为0.7 s，最大磷光效率为18.2%。虽然颜色可调油墨已经使用可见染料开发出来，但溶液处理的安全油墨是前所未有的，它依赖于温度和显示时间分辨率的印刷图像。该策略可以为下一代信息处理安全技术提供关键的一步。
Organic materials with long-lived, color-tunable phosphorescence are potentially useful for optical recording, anti-counterfeiting, and bioimaging. Herein, we develop a series of novel host-guest organic phosphors allowing dynamic color tuning from the cyan (502 nm) to orange red (608 nm). Guest materials are employed to tune the phosphorescent color, while the host materials interact with the guest to activate the phosphorescence emission. These organic phosphors have an ultra-long lifetime of 0.7 s and a maximum phosphorescence efficiency of 18.2 %. Although color-tunable inks have already been developed using visible dyes, solution-processed security inks that are temperature dependent and display time-resolved printed images are unprecedented. This strategy can provide a crucial step towards the next-generation of security technologies for information handling.