Radical-enhanced photo-activated ultralong organic phosphorescence.

IF 15.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Nature Communications Pub Date : 2025-10-15 DOI:10.1038/s41467-025-64202-7

Yuefei Wang, Zaiyong Zhang, Huanyu Yang, Shunjie Li, Xiaokang Yao, Huili Ma, Shengchen Yang, Suzhi Cai, Zhongfu An, Wei Huang

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Abstract

Stimuli-responsive ultralong room temperature phosphorescence materials have attracted great attention due to their great potential in a wide variety of advanced applications. Photo-activated phosphorescence lifetime and photo-activation time are constant and highly dependent on the inherent properties of the materials. It is a great challenge to manipulate them. Herein, we propose a facile strategy to prolong photo-activated phosphorescence emission and shorten photo-activation time by consuming the oxygen in polymer matrix through UV irradiation and radical coupling. The phosphorescence lifetime increases from 0.08 ms to 360 ms after 30-minute UV irradiation. When the guest molecules in solution are photoactivated and subsequently doped into the polymer, the photoactivated phosphorescence lifetime can reach up to 621 ms after just 5-second UV irradiation. This enhancement is attributed to the ability of triarylphosphine radical cations to capture oxygen in polymer through radical coupling. Furthermore, these polymer films have been successfully applied in information storage, programmable afterglow tags, and anti-counterfeiting. This work overcomes the intrinsic limitations of materials and paves the way for regulating photoactivated phosphorescence lifetime and photoactivation time.

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自由基增强光活化超长有机磷光。

刺激响应超长室温磷光材料因其在各种先进应用方面的巨大潜力而受到广泛关注。光活化磷光寿命和光活化时间是恒定的，并且高度依赖于材料的固有性质。操纵它们是一个巨大的挑战。在此，我们提出了一种简单的策略，通过紫外线照射和自由基偶联消耗聚合物基质中的氧来延长光活化磷光发射并缩短光活化时间。紫外线照射30分钟后，磷光寿命从0.08 ms增加到360 ms。当溶液中的客体分子被光激活并随后掺杂到聚合物中时，光激活的磷光寿命可以在5秒的紫外线照射后达到621 ms。这种增强归因于三芳基膦自由基阳离子通过自由基偶联捕获聚合物中的氧的能力。此外，这些聚合物薄膜已成功应用于信息存储、可编程余辉标签和防伪等领域。该研究克服了材料固有的局限性，为调节光活化磷光寿命和光活化时间铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Communications Biological Science Disciplines-

CiteScore

24.90

自引率

2.40%

发文量

6928

审稿时长

3.7 months

期刊介绍： Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.