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Biodegradable Film Enabling Visible Light Excitation of Hexanuclear Europium(Ⅲ) complex for Various Applications
Journal of Luminescence ( IF 3.6 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.jlumin.2020.117706
Dan Zhang , Yongfeng Zhang , Zhonghao Wang , Yan Zheng , Xian Zheng , Liang Gao , Chang Wang , Chaolong Yang , Hailong Tang , Youbing Li

Abstract Developing novel multinuclear organic visible-light-excited europium complex is highly challenging. Herein, novel visible light excitation hexanuclear Eu3+ complex (Eu6(TTA)18CTP-TPY) and Eu3+ complex/polylactic acid (PLA) luminescent films have been successfully designed and prepared. Through proper molecular engineering, the hexanuclear Eu3+ complex, Eu3+ complex/PLA luminescent films both can be successfully excited by visible light. Similarly, it was interesting that the LEDs assembled with Eu6(TTA)18CTP-TPY/PLA can also achieve excellent photoluminescence under 400 nm excitation wavelength, the luminous efficiency can reach as high as 333.33 lm/W, and the 10%-Eu3+ complex/PLA LED kept superior photothermal stability within 50 °C. What’s most surprising was that the Eu6(TTA)18CTP-TPY/PLA luminescent films showed prompt and effective recognition for glacial acetic acid and acrylic acid. This work presents a promising strategy to explore molecular engineering platforms for effectively fluorescence sensing and red LED device applications.

中文翻译:

六核铕(Ⅲ)配合物的可见光激发可生物降解薄膜,适用于各种应用

摘要 开发新型多核有机可见光激发的铕络合物极具挑战性。在此,我们成功设计并制备了新型可见光激发六核 Eu3+ 复合物(Eu6(TTA)18CTP-TPY)和 Eu3+ 复合物/聚乳酸 (PLA) 发光薄膜。通过适当的分子工程,六核Eu3+配合物、Eu3+配合物/PLA发光薄膜都可以被可见光成功激发。同样有趣的是,由 Eu6(TTA)18CTP-TPY/PLA 组装的 LED 在 400 nm 激发波长下也能实现优异的光致发光,发光效率高达 333.33 lm/W,10%-Eu3+ 配合物/PLA LED 在 50 °C 内保持优异的光热稳定性。最令人惊讶的是,Eu6(TTA)18CTP-TPY/PLA 发光薄膜显示出对冰醋酸和丙烯酸的快速有效识别。这项工作为探索有效荧光传感和红色 LED 器件应用的分子工程平台提供了一种很有前景的策略。
更新日期:2021-01-01
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