Boric Acid Cross-Linking Strategy for Enhancing Room Temperature Phosphorescence of Poly(Vinyl Alcohol)-Doped Films

IF 8.7 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Materials Letters Pub Date : 2024-12-03 DOI:10.1021/acsmaterialslett.4c01788

Yejun Yao, Die Huang, Pengbo Han, Xiaoluo Peng, Xin He, He Xu, Anjun Qin* and Ben Zhong Tang,

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Abstract

Organic room temperature phosphorescence (RTP) has attracted increasing attention owing to its unique luminous properties and wide applications. However, the trade-off between the phosphorescence quantum yield (Φ_Phos) and the phosphorescence lifetime (τ_Phos) highlights the necessity for developing new strategies to enhance RTP performance. While research often focuses on guest components in polymer-based host–guest RTP systems, the host materials, which provide rigid environments, are less explored. This work introduces a simple and efficient strategy to develop RTP materials with high efficiency and long lifetime by employing covalent cross-linking to modify the rigidity of the polymer matrix. By suppressing nonradiative decay and decreasing luminescence quenching under ambient conditions, not only the Φ_Phos of cross-linked films is improved from 3.2% to 13.5%, but also the τ_Phos is extended from 482.34 to 625.23 ms. Thanks to its solution processability and water sensitivity, this RTP system was successfully applied in inkjet printing and binary anticounterfeiting.

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增强聚乙烯醇掺杂薄膜室温磷光的硼酸交联策略

有机室温磷光（RTP）由于其独特的发光特性和广泛的应用而受到越来越多的关注。然而，磷光量子产率（ΦPhos）和磷光寿命（τPhos）之间的权衡突出了开发新策略以提高RTP性能的必要性。虽然研究通常集中在基于聚合物的主-客RTP系统中的客体组件上，但提供刚性环境的主体材料却很少被探索。本文介绍了一种简单有效的方法，通过共价交联来改变聚合物基体的刚性，从而开发出高效率、长寿命的RTP材料。通过抑制非辐射衰减和降低环境条件下的发光猝灭，交联膜的ΦPhos从3.2%提高到13.5%，τPhos从482.34 ms延长到625.23 ms。该体系具有良好的溶液加工性和水敏性，成功地应用于喷墨印刷和二元防伪。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.