Irradiation for improving Violet-Blue Light Contribution of tri- and Polychromatic Polysulfone Host-guest systems

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2024-09-04 DOI:10.1016/j.dyepig.2024.112430

Bernardo Monteiro , Susete N. Fernandes , Pedro M.R. Paulo , Catarina Viola , Cláudia C.L. Pereira

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引用次数: 0

Abstract

Herein, we explored the effect of light irradiation on polysulfone films dopped with highly emissive guests. We report irradiation promoted interactions in a polysulfone membrane functionalized with a fluorinated β-diketone species leading to an improved Violet-Blue Light Contribution in Polychromatic Polysulfone Host-Guest Systems.

We suggest that irradiation at higher UV wavelengths, leads to an amorphous-to-monomer phase transformation of the fluorinated boron guest, BF₂dbm (dbm as dibenzoylmethanoate), to which corresponds conversion of part of the green emission from aggregates to cyan-blue fluorescence, characteristic of the monomeric form. Also, irradiation at lower wavelength promotes host-guest BF₂dbm@PSU strong interaction giving rise to increased emission in the violet-blue region by sacrificing the contribution from the intense blue-cyan emission from BF₂dbm molecules.

In the current work we also prepared combinations of Tb³⁺ and Eu³⁺ highly fluorinated complexes and evaluated its tuneable emission due to light driven ligand interaction with host matrix. The judicious choice of molecular ratio between Tb³⁺ and Eu³⁺ complexes allow rationally designed preparation of triple-emissive flexible films when irradiated at 300, 320 and 330 nm, to be used in highly advanced anti-counterfeiting technologies.

In short, we propose a simple and new powerful approach for emission colour tuning of polysulfone dopped films.

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通过辐照提高三基色和多基色聚砜主客体系统的紫蓝光贡献率

在此，我们探讨了光照射对掺杂了高辐射客体的聚砜薄膜的影响。我们报告了辐照促进氟化β-二酮官能化的聚砜膜中的相互作用，从而改善了多色聚砜主客体系统中的紫蓝光贡献。我们认为，在较高的紫外线波长下进行辐照，会导致氟化硼客体 BF2dbm（dbm 为二苯甲酰基甲酸酯）发生从非晶态到单体的相变，从而将聚集体的部分绿色发射转化为单体形式所特有的青蓝色荧光。此外，较低波长的辐照促进了主-客 BF2dbm@PSU 的强相互作用，牺牲了 BF2dbm 分子的强烈蓝-青色发射，从而增加了紫蓝色区域的发射。通过合理选择 Tb3+ 和 Eu3+ 复合物之间的分子比例，我们可以合理设计制备出在 300、320 和 330 纳米波长下照射时具有三重发射性的柔性薄膜，并将其应用于高度先进的防伪技术中。

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

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.