Dyes and Pigments最新文献

Rapid one-step synthesis of self-quenching-resistant cellulose-derived solid-state emissive carbon dots for white LEDs 用于白光led的抗自猝灭纤维素衍生固态发射碳点的快速一步合成

IF 4.2 3区工程技术

Dyes and Pigments Pub Date : 2025-10-03 DOI: 10.1016/j.dyepig.2025.113303

Caiyun Wang , Youqi Han , Mengyang Lin, Meng Yuan, Yuning Wang, Jiaheng Liu, Shiyan Han, Chunlei Zhang, Shujun Li

{"title":"Rapid one-step synthesis of self-quenching-resistant cellulose-derived solid-state emissive carbon dots for white LEDs","authors":"Caiyun Wang , Youqi Han , Mengyang Lin, Meng Yuan, Yuning Wang, Jiaheng Liu, Shiyan Han, Chunlei Zhang, Shujun Li","doi":"10.1016/j.dyepig.2025.113303","DOIUrl":"10.1016/j.dyepig.2025.113303","url":null,"abstract":"<div><div>Cellulose-derived carbon dots (<strong>C-CDs</strong>), namely <strong>C<sub>5</sub>-CDs</strong> and <strong>C<sub>10</sub>-CDs</strong>, were synthesized via an ultrafast (5 or 10 min) one-pot hydrothermal reaction, exhibiting anti-aggregation-caused quenching and highly efficient solid-state fluorescence. Detailed studies on the structural composition and optical properties of the <strong>C-CDs</strong> showed that the presence of cellulose nanofibrils effectively inhibits π-π interactions between the carbon cores. The sp<sup>2</sup> hybridized carbon cores within the graphitic structure result in blue fluorescence. After further carbonization, fluorescence resonance energy transfer occurs between the graphitized carbon cores (donors) and molecular fluorophores (acceptors). The enhanced n-π∗ electronic transitions lead to surface state-dominated yellow-green emission. Simulations using density functional theory confirmed that increased amounts of graphitic N and C<img>O bonds reduce the energy bandgap and thus promote longer wavelength emission. White light-emitting diodes (WLED), with near ideal white light (CIE 1931 coordinates (0.33, 0.33) and color rendering index >80) were produced using the blue- (<strong>C<sub>5</sub>-CDs</strong>) and yellow-green-emitting (<strong>C<sub>10</sub>-CDs</strong>) <strong>C-CDs</strong> as the color-conversion layer. The light, therefore, shows the true colors of illuminated objects. This strategy, which achieves ultra-short reaction times (≤10 min) and high solid-state quantum yields (40 %), establishes a viable pathway for the cost-effective production of biomass-derived carbon dots.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"246 ","pages":"Article 113303"},"PeriodicalIF":4.2,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mitigating dataset imbalance in molecular maximum absorption wavelength prediction via self-supervised learning and scaffold diversification 基于自监督学习和支架多样化的分子最大吸收波长预测数据不平衡缓解

IF 4.2 3区工程技术

Dyes and Pigments Pub Date : 2025-09-26 DOI: 10.1016/j.dyepig.2025.113287

Yong Wang, Peifu Han, Xue Li, Shuang Wang, Xun Wang, Tao Song

{"title":"Mitigating dataset imbalance in molecular maximum absorption wavelength prediction via self-supervised learning and scaffold diversification","authors":"Yong Wang, Peifu Han, Xue Li, Shuang Wang, Xun Wang, Tao Song","doi":"10.1016/j.dyepig.2025.113287","DOIUrl":"10.1016/j.dyepig.2025.113287","url":null,"abstract":"<div><div>Near-infrared (NIR) absorbing dyes, especially those with maximum absorption wavelengths (<em>λ</em><sub>max</sub>) in the NIR region, show promising potential for phototherapy and bioimaging. However, their limited representation in open-source datasets hinders the development of data-driven predictive models. To address this issue, the NIRExDs dataset was constructed by manually supplementing existing open-source datasets with 2805 entries extracted from the literature, resulting in a 2.3-fold and 19.2-fold increase in the number of dyes in the NIR-I and NIR-II spectral regions, respectively. The self-supervised learning model Uni-Mol demonstrated superior performance in predicting <em>λ</em><sub>max</sub> compared to traditional supervised models, particularly in the long-tailed and sparsely distributed NIR-II region, with a more significant MAE reduction compared to other spectral regions. Analysis based on the prediction results revealed that models trained on scaffold-split datasets can expose limitations related to insufficient molecular scaffold diversity. Inspired by this finding, an optimized dataset, NIRExDs-1, was developed by adding a small number of structurally similar compounds to NIRExDs dataset. Models trained on NIRExDs-1 exhibited improved predictive performance on both internal and external test sets compared to those trained on the original NIRExDs dataset. Furthermore, scaffold split showed significantly weaker capability in capturing solvent effects than random split, primarily due to its inability to fully utilize measurement data of similar molecules across different solvent environments. Finally, Uni-Mol reproduced experimentally observed red-shift trends under classical molecular design strategies, confirming its ability to capture generalizable chemical rules.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"246 ","pages":"Article 113287"},"PeriodicalIF":4.2,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A terbium-macrocycle as fluorescence-enhanced probe for selective and quantitative detection of sulfur and zinc ions 铽大环荧光增强探针用于硫和锌离子的选择性和定量检测

IF 4.2 3区工程技术

Dyes and Pigments Pub Date : 2025-09-26 DOI: 10.1016/j.dyepig.2025.113286

Rui Zhu, Sichen Li, Yu Li, Shuaibo Shi, Jiacheng Li, Kun Zhang

{"title":"A terbium-macrocycle as fluorescence-enhanced probe for selective and quantitative detection of sulfur and zinc ions","authors":"Rui Zhu, Sichen Li, Yu Li, Shuaibo Shi, Jiacheng Li, Kun Zhang","doi":"10.1016/j.dyepig.2025.113286","DOIUrl":"10.1016/j.dyepig.2025.113286","url":null,"abstract":"<div><div>The highly-efficient detection of sulfide (S<sup>2−</sup>) and zinc (Zn<sup>2+</sup>) ions is of significant importance due to their essential roles in industrial, biological and environmental areas. In this paper, a novel Schiff-base macrocyclic mononuclear terbium complex <strong>Tb</strong>-<strong>2<sub>l</sub></strong> is synthesized from dialdehyde and diamine precursors upon the template-assisted cyclocondensation reaction, and its precise structure of complex <strong>Tb</strong>-<strong>2<sub>l</sub></strong> is systematically studied by serial characterization techniques. After the careful evaluation of these sensing signals for 15 anions and 19 cations on three emission bands (451, 543 and 632 nm), the complex <strong>Tb</strong>-<strong>2<sub>l</sub></strong> is proven to be a real-time, selective and sensitive fluorescence-enhanced probe for S<sup>2−</sup> and Zn<sup>2+</sup>. Using statistical analysis methods, complex <strong>Tb</strong>-<strong>2<sub>l</sub></strong> further shows its high-throughput discrimination ability of 13 anions and 16 cations, especially several groups of anionic and cationic analogues. By RGB values extracted by an APP, the smartphone-based analysis method is also developed to provide the convenient and on-site detection of S<sup>2−</sup> and Zn<sup>2+</sup> by complex <strong>Tb</strong>-<strong>2<sub>l</sub></strong>, even in real environmental water samples. This work not only contributes to a deeper understanding of lanthanide-based material and luminescence but also offers a reliable analytical tool for detecting common inorganic ions, demonstrating its potential for application in various fields.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"245 ","pages":"Article 113286"},"PeriodicalIF":4.2,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing electrochromism and photoluminescence in carbazole-viologens via conjugation extension and dimerization suppression 通过偶联扩展和抑制二聚体增强咔唑-暴力分子的电致变色和光致发光

IF 4.2 3区工程技术

Dyes and Pigments Pub Date : 2025-09-26 DOI: 10.1016/j.dyepig.2025.113267

Yuhang Wei , Hao Su , Ying Song , Weixing Song , Yan Wu , Chengbo Zhang , Hao Chen , Huiling Liu

{"title":"Enhancing electrochromism and photoluminescence in carbazole-viologens via conjugation extension and dimerization suppression","authors":"Yuhang Wei , Hao Su , Ying Song , Weixing Song , Yan Wu , Chengbo Zhang , Hao Chen , Huiling Liu","doi":"10.1016/j.dyepig.2025.113267","DOIUrl":"10.1016/j.dyepig.2025.113267","url":null,"abstract":"<div><div>Viologens exhibit reversible redox properties and remarkable color response, making them core materials in electrochromism. However, their low conjugation compromises charge transfer efficiency, undermines redox reversibility, and causes fluorescence quenching, thereby limiting their applications. This study addresses this challenge by proposing a synergistic design strategy of 'aromatic bridging–flexible side chains.' Incorporating electron-rich carbazole groups into the viologen backbone as a rigid bridging structure expands the molecular conjugation network; while tuning the length of the alkyl side chains on both sides suppresses molecular aggregation. Following this strategy, we designed and synthesized carbazole-viologen derivatives substituted with hydroxypropyl (HICDP) and hydroxyhexyl (HICDH) groups. A systematic investigation revealed how the carbazole unit and side-chain length regulate their electrochromic and photoluminescent properties. Experiments showed that the carbazole bridging unit expanded the conjugation system, enabling HICDH to achieve an optical contrast of ΔT = 77.4 % at 700 nm. Even after 100 cycles, HICDH retained approximately 70 % of its optical contrast. The increased side-chain length in carbazole-viologen derivatives increased the distance between radicals, suppressed dimer formation, and enhanced stability. Meanwhile, the material exhibited excellent photoluminescent properties. Theoretical calculations further confirmed that the side-chain extension strategy suppressed radical dimerization through steric hindrance. The hexyl side chain reduced the HOMO-LUMO bandgap to facilitate electron transitions while increasing the molecular dihedral angle to minimize non-radiative recombination. The extension of the side chains effectively suppressed non-radiative transition pathways, ultimately enhanced both the photochromic and electrochromic performance.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"245 ","pages":"Article 113267"},"PeriodicalIF":4.2,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Facile thiol-ene photopolymerization of viologen films for high-performance electrochromic devices 高性能电致变色器件中紫外光膜的易硫化硫烯光聚合

IF 4.2 3区工程技术

Dyes and Pigments Pub Date : 2025-09-25 DOI: 10.1016/j.dyepig.2025.113279

Jia-Yi Zhang , Xue-Ru Yuan , Jia-Xin Li , Li-Yi Zhang , Zhong-Ning Chen , Feng-Rong Dai

{"title":"Facile thiol-ene photopolymerization of viologen films for high-performance electrochromic devices","authors":"Jia-Yi Zhang , Xue-Ru Yuan , Jia-Xin Li , Li-Yi Zhang , Zhong-Ning Chen , Feng-Rong Dai","doi":"10.1016/j.dyepig.2025.113279","DOIUrl":"10.1016/j.dyepig.2025.113279","url":null,"abstract":"<div><div>We demonstrate a facile photopolymerization strategy based on thiol-ene click reaction for fabricating high-performance viologen-based electrochromic films and devices. Two terminal alkenes functionalized viologen derivatives (<strong>V1</strong> and <strong>V2</strong>) were synthesized and copolymerized with pentaerythritol tetrakis(3-mercaptopropionate) (PETMP) upon UV irradiation after simple blade-coating. The resulting PETMP-<strong>V2</strong> film demonstrated superior stability during electrochromic cycles and significantly reduced film charge-transfer resistance, attributed to its longer alkyl chain facilitating ion transport. The corresponding electrochromic device achieved excellent performance with high optical contrast of ΔT = 80 % (604 nm), fast switching speeds within 3.4–5.3 s, high coloration efficiency of 298.45 cm<sup>2</sup>/C, and outstanding long-term cycling stability of over 1000 cycles with 94.0 % ΔT retention. Furthermore, the simple process enabled direct patterning of EC images on ITO, highlighting its potential for scalable manufacturing of customizable smart windows and displays.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"245 ","pages":"Article 113279"},"PeriodicalIF":4.2,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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

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

{"title":"Significantly enhanced room temperature phosphorescence afterglow via dopant isomerization and doping strategy","authors":"Yuxin Zhang, Jinbin Liu, Qikun Sun, Shanfeng Xue, Wenjun Yang","doi":"10.1016/j.dyepig.2025.113275","DOIUrl":"10.1016/j.dyepig.2025.113275","url":null,"abstract":"<div><div>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 <em>N</em>-phenylcarbazoles are blended into hydrophobic polymer melts such as SIS, MBS, ABS and PMMA by thermoplastic processing. The results show that (<em>N</em>-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.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"245 ","pages":"Article 113275"},"PeriodicalIF":4.2,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chiral Au(Ⅰ) complex with excitation wavelength-dependent phosphorescence and induced chiral liquid crystal formation 具有激发波长依赖性磷光的手性Au（Ⅰ）配合物和诱导手性液晶的形成

IF 4.2 3区工程技术

Dyes and Pigments Pub Date : 2025-09-25 DOI: 10.1016/j.dyepig.2025.113278

Debin Fu , Shanting Liu , Yang Wang, Xiaofei Yang, Sheng Hua Liu

引用次数: 0

Carbazole-modified fumaronitrile-containing D-π-A-π-D type AIEgen with high-contrast three-color mechanofluorochromism 卡巴唑改性含D-π-A-π-D型高对比度三色机械荧光染料AIEgen

IF 4.2 3区工程技术

Dyes and Pigments Pub Date : 2025-09-24 DOI: 10.1016/j.dyepig.2025.113277

Yijie Zou , Shuang Li , Zewei Song , Zhijian Li , Shouzhi Pu , Zhao Chen

{"title":"Carbazole-modified fumaronitrile-containing D-π-A-π-D type AIEgen with high-contrast three-color mechanofluorochromism","authors":"Yijie Zou , Shuang Li , Zewei Song , Zhijian Li , Shouzhi Pu , Zhao Chen","doi":"10.1016/j.dyepig.2025.113277","DOIUrl":"10.1016/j.dyepig.2025.113277","url":null,"abstract":"<div><div>Anisotropic force-triggered high-contrast tricolored fluorescence molecular switches are promising candidates for high-performance force-dependent multi-signal fluorescence sensors, but the preparation of such smart switches remains highly challenging. Herein, a donor-π-acceptor-π-donor type fluorogenic compound <strong>Cz-π-FMN-π-Cz</strong>, employing two carbazole groups as donors, four biphenyl groups as π-conjugated spacing moieties, and one fumaronitrile group as acceptor, is skillfully designed and successfully prepared. Interestingly, luminogen <strong>Cz-π-FMN-π-Cz</strong> demonstrates remarkable aggregation-induced emission phenomenon, and the pristine yellow-green light-emitting powder sample of <strong>Cz-π-FMN-π-Cz</strong> is changed into yellowish-brown fluorescent solid after slight grinding. Impressively, the yellowish-brown fluorescence triggered by slight mechanical force of solid <strong>Cz-π-FMN-π-Cz</strong> can be further converted into orange-red fluorescence upon heavy grinding. Powder X-ray diffraction and differential scanning calorimetry techniques are applied to elucidate the possible mechanism of anisotropic force-induced yellow-green–to–yellowish-brown–to–orange-red contrasting tricolored fluorescence property of <strong>Cz-π-FMN-π-Cz</strong>. Furthermore, an information encryption system based on force-responsive dual-fluorescence sensing feature of <strong>Cz-π-FMN-π-Cz</strong> is constructed.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"245 ","pages":"Article 113277"},"PeriodicalIF":4.2,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine learning-assisted study on structure-property relationships of dyes: A review 染料结构-性能关系的机器学习辅助研究综述

IF 4.2 3区工程技术

Dyes and Pigments Pub Date : 2025-09-24 DOI: 10.1016/j.dyepig.2025.113273

Jia-Le Mao , Hui-Long Wei , Zheng-Hong Luo

{"title":"Machine learning-assisted study on structure-property relationships of dyes: A review","authors":"Jia-Le Mao , Hui-Long Wei , Zheng-Hong Luo","doi":"10.1016/j.dyepig.2025.113273","DOIUrl":"10.1016/j.dyepig.2025.113273","url":null,"abstract":"<div><div>The structure, properties, and synthesis processes of dye molecules are governed by complex, multi-dimensional relationships. Traditional research methods face limitations: they struggle to process high-dimensional data, involve high experimental costs, and hit efficiency bottlenecks, making it hard to derive results quickly or conduct comprehensive analysis. Machine learning (ML) has emerged as a powerful solution, enabling computational models to learn structure-property relationships (SPRs) from existing data, (e.g., how molecular structure governs color, stability, or reactivity), and predict dye behavior using these patterns. This paper reviews cutting-edge ML applications in dye research, including SPR modeling for property prediction, data-driven design of novel dye molecules, and optimization of synthesis processes for improved yield or reduced reaction time. However, key challenges remain, such as inconsistent experimental data formats that hinder model training and the inherent “black-box” nature of many ML models, which limits interpretability and trust in predictions. Future progress will likely stem from integrating multimodal data (experimental, computational, and theoretical) to enhance model robustness and combining ML with fundamental chemical principles to improve reliability and interpretability. These advances promise to transform dye research from traditional trial-and-error approaches into a closed-loop, data-driven workflow where models iteratively guide experiments, accelerating discovery and optimization.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"245 ","pages":"Article 113273"},"PeriodicalIF":4.2,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

UV light-switchable luminescent hydrogels based on lanthanide complexes and boron-nitrogen-doped carbon dots for luminescent response to acid-base vapor 基于镧系配合物和硼氮掺杂碳点的紫外光可切换发光水凝胶对酸碱蒸汽的发光响应

IF 4.2 3区工程技术

Dyes and Pigments Pub Date : 2025-09-23 DOI: 10.1016/j.dyepig.2025.113271

Meng Jiao , Fangyu Liu , Xiaogang An , Jin Jiao , Wenwen Li , Hongyun Shi

{"title":"UV light-switchable luminescent hydrogels based on lanthanide complexes and boron-nitrogen-doped carbon dots for luminescent response to acid-base vapor","authors":"Meng Jiao , Fangyu Liu , Xiaogang An , Jin Jiao , Wenwen Li , Hongyun Shi","doi":"10.1016/j.dyepig.2025.113271","DOIUrl":"10.1016/j.dyepig.2025.113271","url":null,"abstract":"<div><div>Lanthanide complexes and carbon quantum dots (CDs) have drawn increasing attention in recent years as special building blocks for luminescent hydrogels due to their unique optical properties, chemical stability, biocompatibility, and low toxicity. However, the existing works are mainly limited to the luminescence color modulation at different excitation wavelengths, and few works have utilized two emitting sources to construct white-light hydrogels. Herein, we present a simple approach for the preparation of UV light-switchable hydrogels based on the conjugation of Na<sub>3</sub>[Ln(dpa)<sub>3</sub>] (Ln = Eu, Tb; dpa = pyridine-2, 6-dicarboxylic acid) and water-soluble CDs. Under 254 nm UV lamp irradiation, the composite of red light from Na<sub>3</sub>[Eu(dpa)<sub>3</sub>], green light from Na<sub>3</sub>[Tb(dpa)<sub>3</sub>] and blue light from CDs in an appropriate ratio can realize the construction of white-light hydrogels. Moreover, the emission colors of the resulting hydrogels can be switched from the white color of Na<sub>3</sub>[Ln(dpa)<sub>3</sub>]/CDs to the blue color of single CDs depending on the change in UV light illumination from 254 to 365 nm. The facile preparation and unique optical features make these hydrogels applicable in luminescent pH sensors with dual responsiveness at two non-interfering wavelengths.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"245 ","pages":"Article 113271"},"PeriodicalIF":4.2,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0