Achieving Stimuli-Responsive Amorphous Organic Afterglow in Single-Component Copolymer through Self-Doping,Journal of the American Chemical Society

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Achieving Stimuli-Responsive Amorphous Organic Afterglow in Single-Component Copolymer through Self-Doping
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2023-03-10 , DOI: 10.1021/jacs.2c13632
Huanhuan Li ₁ , Xudong Xue ₁ , Yang Cao ₁ , He Cheng ₁ , Ansheng Luo ₁ , Ningning Guo ₁ , Hui Li ₁ , Gaozhan Xie ₁ , Ye Tao ₁ , Runfeng Chen ₁ , Wei Huang _{1,

2}

Affiliation

The development of stimuli-responsive materials with afterglow emission is highly desirable but remains a formidable challenge in a single-component material system. Herein, we propose a strategy to achieve photoactivated afterglow emission in a variety of amorphous copolymers through self-doping, endowed by the synergetic effect of self-host-induced guest sensitization and thermal-processed polymer rigidification for boosting the generation and stabilization of triplet excitons. Upon continuous ultraviolet illumination for regulating the oxygen concentration, a photoactivated afterglow showing increased lifetimes from 0.34 to 867.4 ms is realized. These afterglow emissions can be naturally or quickly deactivated to the pristine state under ambient conditions or heating treatment. Interestingly, programmable and reusable afterglow patterns, conceptual pulse-width indicators, and “excitation-time lock” Morse code are successfully established using stimuli-responsive afterglow polymers as recorded media. These findings offer an avenue to construct a single-component polymeric system with photoactivated organic afterglow features and demonstrate the superiority of stimuli-responsive materials for remarkable applications.

中文翻译：

通过自掺杂在单组分共聚物中实现刺激响应的无定形有机余辉

开发具有余辉发射的刺激响应材料是非常可取的，但在单组分材料系统中仍然是一个巨大的挑战。在此，我们提出了一种通过自掺杂在多种无定形共聚物中实现光激活余辉发射的策略，该策略通过自主体诱导的客体敏化和热处理聚合物硬化的协同作用来促进三线态激子的产生和稳定。 . 在用于调节氧浓度的连续紫外线照射下，实现了显示寿命从 0.34 毫秒增加到 867.4 毫秒的光激活余辉。这些余辉排放可以在环境条件或热处理下自然或快速地失活到原始状态。有趣的是，可编程和可重复使用的余辉图案，使用刺激响应余辉聚合物作为记录媒体，成功地建立了概念性脉宽指示器和“激发时间锁定”莫尔斯电码。这些发现为构建具有光活化有机余辉特征的单组分聚合物系统提供了一条途径，并证明了刺激响应材料在卓越应用中的优越性。

更新日期：2023-03-10

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