期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 8, 期 28, 页码 9502-9505出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0tc02075c
关键词
-
资金
- China Scholarship Council
- Queen Mary University of London
- EPSRC [EP/L020114/1, EP/P007767/1]
- EPSRC [EP/P007767/1, EP/L020114/1] Funding Source: UKRI
Organic prolonged luminescent materials have attracted attention with various candidates reported providing both UV and visible emission for applications in bio-imaging, light storage, security,etc.However, there is a lack of prolonged near-infrared (NIR) emitting materials, which are highly desirable for many of the proposed applications. NIR-emitting organic lanthanide(iii) molecules have suitable wavelengths, but all of them are unsuitable for persistent luminescence due to weak sensitization and the restricted intrinsic ion radiative lifetimes. Herein, this paper demonstrates efficiently sensitized organic Yb(iii) compounds with prolonged emission lifetimes up to similar to 0.3 s at 1 mu m, far exceeding the intrinsic Yb(3+)emission lifetime of similar to 1 ms. The dynamic equilibrium is studied to demonstrate that this prolonged emission is caused by energy transfer from long-lived organic triplet excitons. Experiment and simulation results suggest a new route to develop bright and ultralong-lived 1 mu m emitting materials that could be coupled with other existing organic persistent luminescence materials to shift their emission in to the infrared.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据