Poly(arylene piperidine) Quaternary Ammonium Salts Promoting Stable Long-Lived Room-Temperature Phosphorescence in Aqueous Environment,Advanced Materials

当前位置： X-MOL 学术 › Adv. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Poly(arylene piperidine) Quaternary Ammonium Salts Promoting Stable Long-Lived Room-Temperature Phosphorescence in Aqueous Environment
Advanced Materials ( IF 27.4 ) Pub Date : 2022-06-22 , DOI: 10.1002/adma.202204415
Chang Wang ₁ , Lunjun Qu ₁ , Xiaohong Chen ₁ , Qian Zhou ₁ , Yan Yang ₁ , Yan Zheng ₁ , Xian Zheng ₁ , Liang Gao ₁ , Jinqiu Hao ₁ , Lingyun Zhu ₁ , Bingxue Pi ₁ , Chaolong Yang _{1,

2}

Affiliation

Room-temperature phosphorescence (RTP) materials have garnered considerable research attention owing to their excellent luminescence properties and potential application prospects in anti-counterfeiting, information storage, and optoelectronics. However, several RTP systems are extremely sensitive to humidity, and consequently, the realization of long-lived RTP in water remains a formidable challenge. Herein, a feasible and effective strategy is presented to achieve long-lived polymeric RTP systems, even in an aqueous environment, through doping of synthesized polymeric phosphor PBHDB into a poly(methyl methacrylate) (PMMA) matrix. Compared to the precursor polymer PBN and organic molecule HDBP, a more rigid polymer microenvironment and electrostatic interaction are formed between the PMMA matrix and polymer PBHDB, which effectively reduce the nonradiative decay rate of triplet excitons and dramatically increase the phosphorescence intensity. Specifically, the phosphorescence lifetime of the PBHDB@PMMA film (1258.62 ms) is much longer than those of PBN@PMMA (674.20 ms) and HDBP@PMMA (1.06 ms). Most importantly, a bright-green afterglow can be observed after soaking the PBHDB@PMMA film in water for more than a month. The excellent water resistance and reversible response properties endow these systems with promising potential for dynamic information encryption even in water.

中文翻译：

聚亚芳基哌啶季铵盐在水环境中促进稳定长寿命室温磷光

室温磷光(RTP)材料由于其优异的发光性能和在防伪、信息存储和光电子学等方面的潜在应用前景而引起了广泛的研究关注。然而，一些 RTP 系统对湿度极为敏感，因此，在水中实现长寿命的 RTP 仍然是一项艰巨的挑战。本文提出了一种可行且有效的策略，通过将合成的聚合物磷光体 PBHDB 掺杂到聚（甲基丙烯酸甲酯）（PMMA）基质中，即使在水环境中也能实现长寿命的聚合物 RTP 系统。与前体聚合物 PBN 和有机分子 HDBP 相比，PMMA 基体和聚合物 PBHDB 之间形成了更刚性的聚合物微环境和静电相互作用，有效降低了三重态激子的非辐射衰减率，显着提高了磷光强度。具体而言，PBHDB@PMMA 薄膜的磷光寿命（1258.62 ms）远长于 PBN@PMMA（674.20 ms）和 HDBP@PMMA（1.06 ms）。最重要的是，将 PBHDB@PMMA 薄膜在水中浸泡一个多月后，可以观察到亮绿色的余辉。优异的耐水性和可逆响应特性使这些系统即使在水中也具有动态信息加密的潜力。将 PBHDB@PMMA 薄膜在水中浸泡一个多月后，可以观察到亮绿色的余辉。优异的耐水性和可逆响应特性使这些系统即使在水中也具有动态信息加密的潜力。将 PBHDB@PMMA 薄膜在水中浸泡一个多月后，可以观察到亮绿色的余辉。优异的耐水性和可逆响应特性使这些系统即使在水中也具有动态信息加密的潜力。

更新日期：2022-06-22

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11