通过掺杂异构化和掺杂策略显著增强了室温磷光余辉

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2025-09-25 DOI:10.1016/j.dyepig.2025.113275

Yuxin Zhang, Jinbin Liu, Qikun Sun, Shanfeng Xue, Wenjun Yang

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引用次数: 0

摘要

芳基硼酸是一类容易获得的化合物，已被用作聚乙烯醇中有效的三重态掺杂剂。然而，它们与疏水聚合物不相容，传统的溶液混合方式难以实现超长室温磷光的分子分散，限制了它们的广泛应用。本研究将含硼酸的n -苯基咔唑通过热塑性加工掺入SIS、MBS、ABS和PMMA等疏水聚合物熔体中。结果表明，（n -苯基-咔唑-2-基）硼酸比（4-（咔唑-9-基）苯基）硼酸在除SIS外的基质中释放的RTP寿命为1.38 ~ 1.90 s，而PMMA/SIS作为基质不仅可以将RTP寿命提高到2.65 s，而且由于橡胶相对塑料基体的氧阻隔作用，RTP的光活化时间显著缩短。本工作揭示了一种更简单、更有效的掺杂方法，并证明了三重态掺杂剂的结构操纵在提高RTP性能方面的重要作用。

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Significantly enhanced room temperature phosphorescence afterglow via dopant isomerization and doping strategy

Aryl boronic acids are a class of easily available compounds and have been used as effective triplet dopants in polyvinyl alcohol. However, they are incompatible with hydrophobic polymers and difficult to molecularly disperse for achieving ultralong room temperature phosphorescence (RTP) by the conventional solution mixing way, limiting their wide applications. In the current work, boronic acid-containing N-phenylcarbazoles are blended into hydrophobic polymer melts such as SIS, MBS, ABS and PMMA by thermoplastic processing. The results show that (N-phenyl-carbazol-2-yl)boronic acid rather than (4-(carbazol-9-yl)phenyl)boronic acid emits ultralong molecular RTP with lifetimes of 1.38–1.90 s in the matrices except SIS, whereas using PMMA/SIS as the matrix can not only advance RTP lifetime to 2.65 s but also significantly shorten photoactivation time due to the oxygen barrier effect of rubber phase on plastic matrix. This work discloses a simpler and more effective doping method and demonstrates a potent role of structural manipulation of triplet dopants in enhancing RTP properties.

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.