Multicolor-emitting fluorescent hydrogels based on asymmetric diaryldibenzofulvenes as the ion-responsive switching

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2025-04-02 DOI:10.1016/j.dyepig.2025.112797

Qiu Jin , Renping Zeng , Xinghang Chen , Zi You , Weibin Bai , Huanping Yang

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引用次数: 0

Abstract

Fluorescent hydrogels have been widely used in many fields due to their unique luminescent properties and good physical and chemical properties. Due to the different substitution points of naphthyl groups, two asymmetric naphthyl-substituted diaryldibenzofulvenes of NPF were prepared through the Suzuki reaction, exhibiting good aggregation induced emission (AIE) performance. Among them, the product of NPF-1 showed cyan fluorescence. The emission of NPF-2 ranged from cyan to yellow green with increasing water content in THF/water solutions. The two AIE compounds were added into the polyacrylamide hydrogels though physical blending method. By adjusting the oil/water ratio and NPF contents, the different fluorescence emission could be achieved from the prepared fluorescent hydrogels. The NPF-1 based hydrogels emitted cyan light, while 2-NPF based hydrogels displayed a shifted emission from cyan to yellow green fluorescence. The NPF hydrogels showed fluorescence emission change response to the specific ions (Fe³⁺, Co²⁺), due to the weak cross-linking between ions and hydrogel matrix. Meanwhile, the weak interaction could be unlocked by H⁺ in HCl solution, which restored the fluorescence properties of the NPF hydrogels, thereby demonstrating excellent switch response cycle stability. The design combination patterns of NPF FL hydrogels and the fluorescent switching behaviors triggered by ion/H⁺ could be applied in anti-counterfeiting and decryption. Thereby, the multicolor-emitting fluorescent NPF hydrogels with unique ion switch response display the potential in applications in information storage, information recognition, information encryption, and other areas.

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以非对称二芳基二苯并呋喃为离子响应开关的多色荧光水凝胶

荧光水凝胶由于其独特的发光性能和良好的物理化学性能，在许多领域得到了广泛的应用。由于萘基取代点不同，通过Suzuki反应制备了两种不对称萘取代的二芳基二苯并fulvenes NPF，具有良好的聚集诱导发射（AIE）性能。其中，NPF-1产物呈青色荧光。随着THF/水溶液含水量的增加，NPF-2的排放范围从青色到黄绿色。通过物理共混的方法将两种AIE化合物加入到聚丙烯酰胺水凝胶中。通过调节油水比和NPF含量，制备的荧光水凝胶具有不同的荧光发射特性。基于NPF-1的水凝胶发出青色光，而基于2-NPF的水凝胶显示从青色到黄绿色荧光的移位。NPF水凝胶对特定离子（Fe3+, Co2+）表现出荧光发射变化响应，这是由于离子与水凝胶基质之间存在弱交联。同时，HCl溶液中的H+可以解除弱相互作用，恢复NPF水凝胶的荧光特性，从而表现出优异的开关响应周期稳定性。NPF FL水凝胶的设计组合模式和离子/H+触发的荧光开关行为可用于防伪和解密。因此，具有独特离子开关响应的多色荧光NPF水凝胶在信息存储、信息识别、信息加密等领域显示出应用潜力。

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.