Dyes and PigmentsPub Date : 2025-05-20DOI: 10.1016/j.dyepig.2025.112907
Shuqing Zhao , Yushan Wang , Binglian Bai , Haitao Wang , Jue Wei , Fengqin Zhang , Min Li
{"title":"Force-, acid- and photo-triggered fluorescent switching behaviors and applications of acylhydrazide derivative","authors":"Shuqing Zhao , Yushan Wang , Binglian Bai , Haitao Wang , Jue Wei , Fengqin Zhang , Min Li","doi":"10.1016/j.dyepig.2025.112907","DOIUrl":"10.1016/j.dyepig.2025.112907","url":null,"abstract":"<div><div>A carbazole-substituted triphenylamine-based acylhydrazone derivative (<strong>TPCZ</strong>) was synthesized, <strong>TPCZ</strong> exhibited mechanical force, acid, and light-responsive properties. Firstly, <strong>TPCZ</strong> exhibited mechanofluorochromic properties, the fluorescence emission switching from cyan to green after grinding. The change in emission was attributed to a crystalline-amorphous phase transition. Secondly, due to the protonation of –HC<img>N- in <strong>TPCZ</strong>, <strong>TPCZ</strong> exhibited acidochromism, the color of a <strong>TPCZ</strong> film changed from slight yellow to orange under visible light, and the blue emission quenched under UV light upon fumigation with trifluoroacetic acid (TFA), and the fluorescence can be reversibly switched on and off upon reaction with TFA and triethylamine (TEA). Furthermore, <strong>TPCZ</strong> displayed photo-induced quenching phenomena, and the main reason for the quenching of fluorescence was that <strong>TPCZ</strong> underwent a <em>trans</em>-<em>cis</em> isomerization upon photo-irradiation. These foregoing stimuli responsive behaviors revealed that <strong>TPCZ</strong> may possess enormous potential application value in sensing, security label and anti-counterfeiting.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"241 ","pages":"Article 112907"},"PeriodicalIF":4.1,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125048","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}
{"title":"Supramolecular Aggregates from core-functionalized 1,8-naphthalimides: insights into self-assembling and sensing ability for drugs in water","authors":"Salvatore Marullo, Eleonora Capuano, Francesca D'Anna","doi":"10.1016/j.dyepig.2025.112881","DOIUrl":"10.1016/j.dyepig.2025.112881","url":null,"abstract":"<div><div>To monitor emerging pollutants in water, we herein describe three novel core-substituted, self-assembling 1,8-naphthalimide derivatives, applied as fluorescent sensors to detect drugs in water. These fluorophores differ for the substitution on the core and imide positions. We initially studied photophysical properties of the fluorophores by solvent-dependent UV–vis and fluorescence measurements and then investigated their self-assembly, finding that they mostly form <em>J</em>-aggregates in water and water/DMSO solutions, following an isodesmic pathway. We also obtained insights on the thermodynamic parameters of the aggregation process and characterized the aggregate morphology by Scanning Electron Microscopy. Subsequently, we studied how these supramolecular aggregates act as fluorescent sensors to detect in aqueous solutions drugs belonging to different classes, like non-steroidal, anti-inflammatory and antibiotic drugs. To this aim, we conducted fluorescence measurements in the presence of variable drug concentrations. The best-performing system could detect ketoprofen with limit of detection (LOD) and limit of quantification (LOQ) of 2.3 and 6.9 μM, respectively. Finally, we embedded the best-performing fluorophore onto solid supports including filter paper strips or polymer poly(3-hydroxybutirate) films. When these fluorophore-doped solids were soaked in ketoprofen solutions at different concentrations, significant quenching of emission was detected.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"241 ","pages":"Article 112881"},"PeriodicalIF":4.1,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125049","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}
Dyes and PigmentsPub Date : 2025-05-19DOI: 10.1016/j.dyepig.2025.112905
Lijuan Xie , Hao Dai , Di Liu , Jiuyan Li , Jiahui Wang , Jing Jin
{"title":"Achieving high-performance non-doped OLEDs by combining AIE and HLCT luminescence features","authors":"Lijuan Xie , Hao Dai , Di Liu , Jiuyan Li , Jiahui Wang , Jing Jin","doi":"10.1016/j.dyepig.2025.112905","DOIUrl":"10.1016/j.dyepig.2025.112905","url":null,"abstract":"<div><div>Organic light-emitting material that combines hybridized local and charge-transfer (HLCT) excited states and aggregation-induced emission (AIE) features not only breaks the 25 % exciton utilization efficiency (EUE) limit of the traditional fluorescence emitters, but also overcomes the aggregation-caused quenching (ACQ), making it highly suitable as the emitter for non-doped organic light-emitting diodes (OLEDs), especially for the long-wavelength emitters. Two orange HLCT emitters 4Ph-TPA-BTD and 3Ph-TPA-BTD were developed with rigid benzo[c][1,2,5]thiadiazole (BTD) as acceptor and triphenylamine (TPA) as donor. Tetraphenylethylene (TPE) or triphenylethylene (TriPE) was further linked to BTD acceptor, which plays the role of AIE functional group to improve the luminescence in solid state and also acts as the second weaker donor. It was observed that the AIE group participates the T<sub>2</sub> state of each molecule, which happens to be the starting triplet state that undergoes the high-lying reverse intersystem crossing (hRISC) and therefore enhances the utilization of triplet excitons. Their photoluminescence quantum yields (PLQYs) in neat films were as high as 70.0 % and 61.1 % and the radiative transition rates exceeded 10<sup>8</sup> s<sup>−1</sup>. The orange non-doped OLED of 4Ph-TPA-BTD exhibited high EUE of 35.71 % and high EQE of 5.00 %, among the best performance for the non-doped AIE-HLCT OLEDs based on benzothiadiazole acceptor.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"241 ","pages":"Article 112905"},"PeriodicalIF":4.1,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105758","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}
Dyes and PigmentsPub Date : 2025-05-16DOI: 10.1016/j.dyepig.2025.112901
Yurong Sun , Yixiao Li , Yongyuan Xiang , Yichen Li , Yupei Yang , Guoqiang Chen , Xue Dong , Tieling Xing
{"title":"Polycaffeic acid microspheres for vivid photonic crystal structural color on white fabrics","authors":"Yurong Sun , Yixiao Li , Yongyuan Xiang , Yichen Li , Yupei Yang , Guoqiang Chen , Xue Dong , Tieling Xing","doi":"10.1016/j.dyepig.2025.112901","DOIUrl":"10.1016/j.dyepig.2025.112901","url":null,"abstract":"<div><div>Photonic crystals formed through the self-assembly of microspheres have been extensively studied for textile coloration due to their unique structural colors. Black additives, such as carbon black and graphene, have been utilized to construct highly saturated structural color fabrics. However, the dispersion of these substances within the photonic crystal structure affects the color uniformity of the fabric. Herein, potassium iodate (KIO<sub>3</sub>) was selected as an oxidant to catalyze the rapid polymerization of caffeic acid (CA), producing polycaffeic acid (PCA) microspheres with a regular morphology, uniform particle size, and particularly dark appearance. Furthermore, by modulating the particle size of gravity-deposited PCA microspheres, vibrant structural colors were successfully achieved on various white fabrics, including cotton, silk, and polyester. Additionally, by mixing and depositing PCA microspheres of two different sizes in various ratios, hybrid structural colors were attained, further expanding the structural color gamut. The introduction of waterborne polyurethane (WPU) enhanced the stability of PCA photonic crystals on the fabric surface to a certain extent. This research introduces not only novel microsphere primitives for constructing photonic crystal structural colors but also proposes innovative strategies for creating vibrant and highly saturated structural color fabrics.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"241 ","pages":"Article 112901"},"PeriodicalIF":4.1,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105760","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}
{"title":"Determination of cyanide in organic and aqueous environments by NASH reaction","authors":"Ebubekir Kandemir , Burcu Aydıner , Ertan Şahin , Yilmaz Sakalli , Nurgül Seferoğlu , Zeynel Seferoğlu","doi":"10.1016/j.dyepig.2025.112898","DOIUrl":"10.1016/j.dyepig.2025.112898","url":null,"abstract":"<div><div>Cyanide selective and sensitive 3,5-dinitrobenzamide based novel nine colorimetric and fluorimetric compounds were synthesized. The compounds' crystallized structures and surface morphologies (<strong>2</strong>, <strong>4</strong>, <strong>5</strong>, <strong>7</strong>, and <strong>8</strong>) were determined by X-ray and ESEM analysis. The cyanide sensing properties were investigated against competing anions such as F<sup>−</sup>, AcO<sup>−</sup>, and H<sub>2</sub>PO<sub>4</sub><sup>–</sup> in organic (DMSO) and aqueous solutions. The compounds exhibit a vivid color change from colorless to blue/purple and pink fluorescence after interacted with cyanide ion. Also, practical applications such as test strips showed that compounds easily change color and emission with cyanide. The structural and electronic properties of the compounds and their complexes formed via deprotonation and addition processes were determined with <sup>1</sup>H NMR titration and Density Functional Theory (DFT) and time-dependent DFT (TD-DFT) calculations.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"241 ","pages":"Article 112898"},"PeriodicalIF":4.1,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130923","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}
Dyes and PigmentsPub Date : 2025-05-15DOI: 10.1016/j.dyepig.2025.112899
Siqi Li , Jinhai Hu , Shanshan Wang , Hong Yan
{"title":"Construction of CdS/CQDs three-dimensional composites and study on the properties and mechanism of visible light catalytic degradation of natural lignin","authors":"Siqi Li , Jinhai Hu , Shanshan Wang , Hong Yan","doi":"10.1016/j.dyepig.2025.112899","DOIUrl":"10.1016/j.dyepig.2025.112899","url":null,"abstract":"<div><div>Lignin is a unique renewable carbon source on Earth, which has attracted much attention in the fields of green energy and environmental protection. Because of its excellent electron transport performance, suitable bandgap width, and ultra-high efficiency of degrading pollutants, sulfides have been favored by scholars in the field of clean energy development and photocatalytic degradation. However, due to the fast speed of photo corrosion and photo generated carrier hole recombination, Cadmium sulfide (CdS) is currently unsuitable for industrial-scale production due to rapid photocorrosion. Therefore, in this work, a novel CdS/CQDs three-dimensional composites was constructed and photocatalytic properties and mechanism of natural ligin was futher investigated. Firstly, the optimum orientation of crystal growth is determined by controlling the morphology of CdS. Then carbon quantum dots (CQDS) extracted from lignin were loaded on the CdS microspheres in situ. The results showed that CdS loaded with CQDs showed excellent performance in degrading AL, with AL almost completely degraded within 60 min. The degradation efficiency is 20 times that of commercial catalyst (P25 k = 0.037/min<sup>−1</sup> the reaction order is the first order). The catalyst also retains this high activity after long storage. A series of characterization results show that the addition of CQDs can generate sulfur vacancy and induce phase transformation rearrangement of the. The position of conduction band and valence band is changed to inhibit the recombination efficiency of hole and carrier. The photocatalytic degradation rate was greatly improved.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"241 ","pages":"Article 112899"},"PeriodicalIF":4.1,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116854","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}
{"title":"A review: Pyrazolo[1,5-a]pyrimidine as prominent fluorophores for chemosensory, optoelectronic and biological applications","authors":"Aluru Rammohan , P.C. Nagajyothi , Grigory V. Zyryanov , Pabba Durga Prasad , Jaesool Shim","doi":"10.1016/j.dyepig.2025.112896","DOIUrl":"10.1016/j.dyepig.2025.112896","url":null,"abstract":"<div><div>Organic fluorophores are often used in advanced applications such as biological imaging, molecular sensors, optoelectronic dyes, and materials science. Pyrazolo[1,5-<em>a</em>]pyrimidines are pharmacologically important, fused <em>N</em>-heterocycles, as they have shown interesting clinical results against various human diseases. In addition, pyrazolo[1,5-<em>a</em>]pyrimidines are also pronounced for their intensive photophysical properties, suggesting their potential in material science applications. Accordingly, the current study focuses on the synthesis and functionalization of various pyrazolo[1,5-<em>a</em>]pyrimidines in the recent decade (2014–2025). Moreover, the discussion highlights the synthetic approaches for novel <em>π</em>-extended pyrazolo[1,5-<em>a</em>]pyrimidines and their fluorophore applications for chemosensory, optoelectronic and biological activities. As well, it is hoped that this review will act as a model for further research to develop efficient pyrazolo[1,5-<em>a</em>]pyrimidine-based fluorophores for biological and material science applications.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"241 ","pages":"Article 112896"},"PeriodicalIF":4.1,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072643","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}
{"title":"Systematic study of phenyl substitutions in a terpyridine Zn2+ complex for pyrophosphate sensing in water","authors":"Zhongzheng Yu, Fang Wang, Sheng Lu, Xiaoqiang Chen","doi":"10.1016/j.dyepig.2025.112874","DOIUrl":"10.1016/j.dyepig.2025.112874","url":null,"abstract":"<div><div>Terpyridine Zn<sup>2+</sup> complex-based pyrophosphate (PPi) fluorescent probes have shown promise, however, a systematic study on the optimal structure of terpyridine for PPi sensing is still lacking. In this study a series of six-coordinated terpyridine Zn<sup>2+</sup> complexes were designed and synthesized. The impact of the position and the number of electron-donating groups on the aromatic ring of terpyridine, as well as changes in hydrophobicity, on the ability to selectively recognize PPi was explored. Six terpyridine Zn<sup>2+</sup> complexes with <em>meta-</em>methoxy groups on the phenyl ring can detect PPi in aqueous solution through an AIE-mediated mechanism, exhibiting excellent selectivity for PPi over other nucleoside triphosphates (NTPs). More importantly, the introduction of an additional propoxy group at the <em>para</em>-position enhances the anti-interference capability and fluorescence response speed of the terpyridine Zn<sup>2+</sup> complex towards PPi. Furthermore, four selected probes have also demonstrated the capability to monitor inorganic pyrophosphatase (IPP)-mediated PPi hydrolysis.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"241 ","pages":"Article 112874"},"PeriodicalIF":4.1,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072767","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}
Dyes and PigmentsPub Date : 2025-05-14DOI: 10.1016/j.dyepig.2025.112897
Raminta Beresneviciute , Dovydas Blazevicius , Saulius Grigalevicius , Zih-Ru He , Fong-Yu Yang , Chih-Hao Chang
{"title":"Versatile carbazole and dibenzofuran-based materials for OLEDs: Emitters and exciplex-forming systems","authors":"Raminta Beresneviciute , Dovydas Blazevicius , Saulius Grigalevicius , Zih-Ru He , Fong-Yu Yang , Chih-Hao Chang","doi":"10.1016/j.dyepig.2025.112897","DOIUrl":"10.1016/j.dyepig.2025.112897","url":null,"abstract":"<div><div>Organic light-emitting diodes (OLEDs) have attracted significant attention in recent decades due to their exceptional advantages. While they are already integrated into numerous commercial products, ongoing challenges related to stability and efficiency have motivated us to develop two new multifunctional compounds, <strong>BeCzMFI</strong> and <strong>BbCzMFI</strong>. These compounds are based on a methoxydibenzofuran-carbazole electron-donating core with additional aliphatic chains to enhance film-forming properties. They exhibit excellent thermal and morphological stability, along with favorable photophysical properties, making them promising candidates for OLED applications. These materials can function as both emitters and host materials, either as standalone hosts or as components of exciplex host systems when combined with an acceptor material (CN-T2T). We investigated their performance in blue and red OLEDs, finding that exciplex formation enhances carrier balance and energy transfer efficiency. The blue devices using <strong>BeCzMFI</strong> and <strong>BbCzMFI</strong> as emitters exhibited efficient exciton harvesting and carrier balance, leading to high luminance with an external quantum efficiency (EQE) of 10.4 %. Meanwhile, red phosphorescent OLEDs incorporating these materials as exciplex hosts achieved a maximum luminance exceeding 30,000 cd/m<sup>2</sup> and an EQE of 13.6 %. These results highlight the potential of these multi-function materials in advancing OLED performance by enabling both conventional and exciplex-based emission mechanisms.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"241 ","pages":"Article 112897"},"PeriodicalIF":4.1,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068693","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}
Dyes and PigmentsPub Date : 2025-05-14DOI: 10.1016/j.dyepig.2025.112890
Xiaoni Zhao , Tao Liu , Xuwei Han , Fangjun Huo , Yongkang Yue , Caixia Yin
{"title":"Photo-stretching modulation to construct multiple activable photo-functional dyes","authors":"Xiaoni Zhao , Tao Liu , Xuwei Han , Fangjun Huo , Yongkang Yue , Caixia Yin","doi":"10.1016/j.dyepig.2025.112890","DOIUrl":"10.1016/j.dyepig.2025.112890","url":null,"abstract":"<div><div>A Phenoxazinone based fluorophore and its acylated derivatives were reported in this work. Interestingly, the present fluorescence modulation mechanisms failed to explain the acylation induced fluorescence activation in this series of dyes. Supported by exhaustive theoretical calculation and experimental validation, we proposed the bond photo-stretching as a molecular mechanism that modulated the abnormal photophysical property. Specifically, photo excitation of Phenoxazinone-NH<sub>2</sub> induced distinctly stretching of a C<img>C bond adjacent to the asymmetric amino group to quench the excited state energy via non-radiative transition. Upon acylation, however, the contribution of the nitrogen moiety to the HOMO and LUMO of the fluorophore reduced significantly which thus resulted a contraction of structural changes between the ground and excited states to enhance the radiative transition. The fluorophore in this work supports us to construct multiple biomolecules activable photo functional dyes with controllable photon to heat transformation.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"241 ","pages":"Article 112890"},"PeriodicalIF":4.1,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071443","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}