Dyes and Pigments最新文献_第2页

Nitrogen-mediated dyeing of denim with natural indigo: Towards sustainable and efficient coloration

IF 4.1 3区工程技术

Dyes and Pigments Pub Date : 2025-03-22 DOI: 10.1016/j.dyepig.2025.112778

Kangkang Wang, Qingliang Luo, Wei Ding, Qiangqiang Zhang, Dongxiao Ji, Rongwu Wang, Xiaohong Qin

{"title":"Nitrogen-mediated dyeing of denim with natural indigo: Towards sustainable and efficient coloration","authors":"Kangkang Wang, Qingliang Luo, Wei Ding, Qiangqiang Zhang, Dongxiao Ji, Rongwu Wang, Xiaohong Qin","doi":"10.1016/j.dyepig.2025.112778","DOIUrl":"10.1016/j.dyepig.2025.112778","url":null,"abstract":"<div><div>The conventional indigo dyeing process for denim production poses significant environmental challenges. While natural indigo dyes offer eco-friendly alternatives, their application is limited by low dye uptake and poor color fastness. This study integrates molecular dynamics simulations and experimental approaches to explore the effects of nitrogen (N<sub>2</sub>) protected dyeing technology on natural indigo performance. Results reveal that N<sub>2</sub> protection enhances the hydrogen bonding in cellulose fibers, strengthens dye-fiber interactions, and improves dye diffusion, leading to superior dyeing outcomes. Using response surface methodology (RSM), we identified N<sub>2</sub> concentration and dyeing temperature as key factors influencing coloration efficiency and fastness. Under optimized conditions, natural indigo achieved performance comparable to synthetic dyes while exhibiting enhanced biodegradability in residual dye baths. Compared to conventional synthetic indigo dyeing processes, the N<sub>2</sub>-assisted natural indigo dyeing strategy achieves a 41.45 % reduction in chemical consumption, and 28.72 % decrease in energy consumption and CO<sub>2</sub> emissions. These results validate its dual advantages in enhancing dye utilization efficiency and ecological sustainability. This work provides a theoretical foundation for sustainable denim dyeing and advances eco-conscious practices in textile industry, offering both scientific and practical insights.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112778"},"PeriodicalIF":4.1,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678410","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

Synthesis and photophysical properties of π-extended carboxyl BODIPYs: An experimental and theoretical study

IF 4.1 3区工程技术

Dyes and Pigments Pub Date : 2025-03-22 DOI: 10.1016/j.dyepig.2025.112776

Gökhan Sevinç , Elif Akhüseyin Yıldız , Zeliha Pınar Taşkıran , Ahmet Karatay

{"title":"Synthesis and photophysical properties of π-extended carboxyl BODIPYs: An experimental and theoretical study","authors":"Gökhan Sevinç , Elif Akhüseyin Yıldız , Zeliha Pınar Taşkıran , Ahmet Karatay","doi":"10.1016/j.dyepig.2025.112776","DOIUrl":"10.1016/j.dyepig.2025.112776","url":null,"abstract":"<div><div>A series of new boron-dipyrromethenes (BODIPYs) bearing 4-carboxyphenyl unit at the <em>meso</em> (8) position of the BODIPY core have been successfully synthesized through the reactions of 2,4-diaryl substituted pyrroles with 4-formylbenzoic acid. The palladium-catalyzed Suzuki-Miyaura coupling reactions were performed on the <em>meso</em> unsubstituted BODIPY derivatives with 4-carboxyphenyl boronic acid to obtain distal and proximal substitution. Chemical structures were characterized using high resolution mass spectrometry (HRMS), <sup>1</sup>H/<sup>13</sup>C NMR, and FTIR spectroscopy. The photophysical properties, excited state dynamics, and thermal degradation profiles were investigated in terms of aromatic subunits using electronic absorption/fluorescence measurements, femtosecond transient absorption spectroscopy, and thermogravimetric analysis (TGA), respectively. Experimentally investigated absorption and fluorescence properties, as well as structural features, were clarified using density functional theory (DFT) and electron-hole analysis. The absorption of the compounds ranges from 504 to 594 nm, and their emission ranges from 609 to 640 nm, depending on the aromatic groups at the BODIPY core. Performed pump probe spectroscopy measurements revealed that the excited state lifetime is shortened for 3,5 (proximal) positions compared to 1,7 (distal) positions due to increasing interactions between the molecular orbitals. The local n–π and π-π∗ excitations from DFT calculations and electron-hole analysis mainly characterize the electronic transitions, leading to limited intramolecular charge transfer to the BODIPY core. Charge transfer is highest at the 3,5-positions, decreases at the <em>meso</em> (8) position, and is lowest at the 1,7-positions of the BODIPY core. The newly developed BODIPYs with carboxyl groups show potential as agents in applications demanding extensive absorption and strong emission characteristics.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112776"},"PeriodicalIF":4.1,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678407","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

In vitro evaluation of color stability of three maxillofacial silicone elastomers: Effects of soap-based disinfection 体外评估三种颌面部硅树脂弹性体的颜色稳定性：皂基消毒的影响

IF 4.1 3区工程技术

Dyes and Pigments Pub Date : 2025-03-21 DOI: 10.1016/j.dyepig.2025.112777

Bilal Lukman Alkrayem , Fan Zhang , Mariko Hattori , Yuka I. Sumita , Noriyuki Wakabayashi

{"title":"In vitro evaluation of color stability of three maxillofacial silicone elastomers: Effects of soap-based disinfection","authors":"Bilal Lukman Alkrayem , Fan Zhang , Mariko Hattori , Yuka I. Sumita , Noriyuki Wakabayashi","doi":"10.1016/j.dyepig.2025.112777","DOIUrl":"10.1016/j.dyepig.2025.112777","url":null,"abstract":"<div><div>The preservation of color stability in maxillofacial silicone prostheses is essential for their aesthetic appeal and functional durability. This research investigated the impact of two soap-based disinfectants and tap water on the color stability of three silicone elastomers: A-2186-F, VST-50, and GC Silfy, over a simulated five-year clinical service duration. The samples were immersed daily for two weeks in tap water, Muse hand disinfectant soap, and Hadakara body soap, simulating approximately five years of clinical use. Color stability was evaluated at baseline (T<sub>0</sub>), after 7 days (T<sub>1</sub>), and after 14 days (T<sub>2</sub>). The results revealed that the disinfectants exerted minimal influence on the color stability of the silicones, with GC Silfy and VST-50 exhibiting greater resistance to discoloration than A-2186-F. Particularly, exposure to Muse hand disinfectant soap led to the most significant color alteration in A-2186-F. Nevertheless, the changes observed across all materials remained below the threshold of perceptibility (ΔE∗ = 1.1), indicating that they are not visually noticeable. These findings underscore the significance of selecting appropriate materials and ensuring disinfectant compatibility to preserve the aesthetic quality of maxillofacial prostheses. By refining cleaning protocols, it may be feasible to improve the longevity and clinical efficacy of these prosthetic materials.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112777"},"PeriodicalIF":4.1,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734557","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

Synthesis and characterization of new push-pull azobenzene. Cis → Trans isomerization kinetic study

IF 4.1 3区工程技术

Dyes and Pigments Pub Date : 2025-03-19 DOI: 10.1016/j.dyepig.2025.112774

Gaspard Bichot , Xavier Sallenave , Rémi Métivier , Sébastien Péralta

引用次数: 0

Biphenyl core boosts the photovoltaic performance of ether-bonded perylene diimides based nonfullerene acceptors

IF 4.1 3区工程技术

Dyes and Pigments Pub Date : 2025-03-18 DOI: 10.1016/j.dyepig.2025.112771

Yanjie Sun , Yinuo Wang , Fengbo Sun , Ruize Zhou , Xiang Gao , Qi Zhang , Jianhong Gao , Zhitian Liu

引用次数: 0

Highly efficient multi-resonant thermally activated delayed fluorescence emitter based on carbonyl-nitrogen derivative

IF 4.1 3区工程技术

Dyes and Pigments Pub Date : 2025-03-17 DOI: 10.1016/j.dyepig.2025.112770

Shangru Li , Xiao-Long Liu , Jia-Xiong Chen , Congcong Kai , Zhichao Mao , Longjiang Xing , Yong-Zhi Chen , Yao-Zu Su , Weiqiang Li , Wen-Cheng Chen , Yanping Huo

{"title":"Highly efficient multi-resonant thermally activated delayed fluorescence emitter based on carbonyl-nitrogen derivative","authors":"Shangru Li , Xiao-Long Liu , Jia-Xiong Chen , Congcong Kai , Zhichao Mao , Longjiang Xing , Yong-Zhi Chen , Yao-Zu Su , Weiqiang Li , Wen-Cheng Chen , Yanping Huo","doi":"10.1016/j.dyepig.2025.112770","DOIUrl":"10.1016/j.dyepig.2025.112770","url":null,"abstract":"<div><div>The development of multi-resonant thermally activated delayed fluorescence (MR-TADF) materials to achieve a small full width at half maximum (FWHM) and high external quantum efficiency (EQE) in highly doped organic light-emitting diodes (OLEDs) is highly desirable. In this study, we designed a novel MR-TADF emitter, 3,11-di-<em>tert</em>-butyl-7-(10-phenyl-10<em>H</em>-spiro[acridine-9,9′-fluoren]-3′-yl)quinolino[3, 2, 1 -de]acridine-5,9-dione (tBuCON-ST), by incorporating a spirofluorene triphenylamine (ST) group into the MR-TADF framework of tBuCON. The ST group introduces steric hindrance, effectively suppressing exciton quenching. Consequently, tBuCON-ST demonstrated high exciton utilization at elevated doping ratios while maintaining a narrow FWHM of 34 nm. Moreover, tBuCON-ST-based OLEDs achieved high EQEs exceeding 19.1 % at doping concentrations of 10 wt%, significantly outperforming tBuCON-based OLEDs at the same doping levels.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112770"},"PeriodicalIF":4.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679019","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 tricolor photochromic hybrid tetra-arylethene with > 99 % E-Z isomerization and photocyclization/cycloreversion

IF 4.1 3区工程技术

Dyes and Pigments Pub Date : 2025-03-17 DOI: 10.1016/j.dyepig.2025.112766

Wei Lei, Siyuan Chen, Yan Zeng, Xuewen Wang, Qianfu Luo

引用次数: 0

A quinolinium-based colorimetric and NIR fluorescent dual-channel sensing platform for specific detection of bisulfite in food, traditional Chinese medicine and living cells

IF 4.1 3区工程技术

Dyes and Pigments Pub Date : 2025-03-17 DOI: 10.1016/j.dyepig.2025.112767

Qiutong Chen , Jiaxing Li , Yiting Wang , Mingyu Tian , Tianyu Liang , Keli Zhong , Xiaomei Yan , Lijun Tang

{"title":"A quinolinium-based colorimetric and NIR fluorescent dual-channel sensing platform for specific detection of bisulfite in food, traditional Chinese medicine and living cells","authors":"Qiutong Chen , Jiaxing Li , Yiting Wang , Mingyu Tian , Tianyu Liang , Keli Zhong , Xiaomei Yan , Lijun Tang","doi":"10.1016/j.dyepig.2025.112767","DOIUrl":"10.1016/j.dyepig.2025.112767","url":null,"abstract":"<div><div>Sulfur dioxide (SO<sub>2</sub>) and its derivatives are commonly used in food processing, but excessive exposure to SO<sub>2</sub> and its derivatives can pose serious health risks. In this study, we present a near-infrared “turn-on” probe, <strong>QSB-M</strong>, for the highly selective and sensitive detection of HSO<sub>3</sub><sup>−</sup>. The recognition of HSO<sub>3</sub><sup>−</sup> by the probe results in a marked color change and a significant enhancement in near-infrared fluorescence, offering high sensitivity (limit of detection = 95.12 nM), rapid response, and minimal interference from environmental background signals. The recognition mechanism involves the specific addition of HSO<sub>3</sub><sup>−</sup> to the 4-position of the quinolinium moiety, triggering an intramolecular charge transfer effect that leads to both colorimetric and fluorescence dual responses. <strong>QSB-M</strong> was also successfully applied for <em>in situ</em> visualization of HSO<sub>3</sub><sup>−</sup> in various foods and traditional Chinese medicines (TCM), with recoveries ranging from 90 % to 115 %. Additionally, test strips and a smartphone-assisted sensing platform were developed, enabling direct detection of HSO<sub>3</sub><sup>−</sup> levels in foods and TCM without the need for complex instrumentation. Importantly, <strong>QSB-M</strong> exhibits low cytotoxicity, good mitochondrial-targeting ability, and has been successfully used for the <em>in situ</em> detection of both endogenous and exogenous HSO<sub>3</sub><sup>−</sup> in live MCF-7 cells.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112767"},"PeriodicalIF":4.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679020","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

When the past meets the present: New insights into the synthesis and photoelectrochemical stability of mosaic gold

IF 4.1 3区工程技术

Dyes and Pigments Pub Date : 2025-03-17 DOI: 10.1016/j.dyepig.2025.112772

Anna Kusior , Kinga Michalec , Marta Radecka , Victoria Beltran , Karolien De Wael

{"title":"When the past meets the present: New insights into the synthesis and photoelectrochemical stability of mosaic gold","authors":"Anna Kusior , Kinga Michalec , Marta Radecka , Victoria Beltran , Karolien De Wael","doi":"10.1016/j.dyepig.2025.112772","DOIUrl":"10.1016/j.dyepig.2025.112772","url":null,"abstract":"<div><div>Tin sulfides are widely used in various applications, such as lithium-ion batteries, photodetectors, photocatalysts, and photovoltaic cells. SnS<sub>2</sub> (mosaic gold) is mainly known for its stability and effectiveness as a reductive photocatalyst. However, it is vulnerable to corrosion from light exposure and environmental factors, but the mechanism behind these reactions are not well understood. In this study, SnS<sub>2</sub> synthesized by three methods, salt melting, hydrothermal synthesis, and solid-state reaction, were investigated, and their morphological and phase composition were studied. The stability of the materials under different light sources and environmental conditions was analyzed by electrochemical measurements, scanning electron microscopy (SEM), X-ray diffraction (XRD), spectroscopy and Raman imaging. The results demonstrate that the photostability of SnS<sub>2</sub> pigments is influenced by their composition and morphology, with non-stoichiometric and flower-like structures exhibiting enhanced resistance. This research contributes to understanding the pigment's stability. Raman spectroscopy spot analysis revealed the presence of a multiphase composition, suggesting local changes in structure. However, the overall photostability is guaranteed by the geometry and purity of the mosaic gold particles.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112772"},"PeriodicalIF":4.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678403","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

Investigation of molecular rotation's influence on twisted ICT states in a series of D-A-A1 organic dyes

IF 4.1 3区工程技术

Dyes and Pigments Pub Date : 2025-03-15 DOI: 10.1016/j.dyepig.2025.112761

Vladislav M. Korshunov , Timofey N. Chmovzh , Ivan V. Shlykov , Mikhail E. Minyaev , Ilya V. Taydakov , Oleg A. Rakitin

{"title":"Investigation of molecular rotation's influence on twisted ICT states in a series of D-A-A1 organic dyes","authors":"Vladislav M. Korshunov , Timofey N. Chmovzh , Ivan V. Shlykov , Mikhail E. Minyaev , Ilya V. Taydakov , Oleg A. Rakitin","doi":"10.1016/j.dyepig.2025.112761","DOIUrl":"10.1016/j.dyepig.2025.112761","url":null,"abstract":"<div><div>The Twisted Intramolecular Charge Transfer (TICT) phenomenon can, in some cases, lead to the formation of highly luminescent molecules. Such emitters require donor and acceptor units to be rotationally displaced in the ground state. However, the impact of molecular rotation in the excited state on the photophysical properties of compounds remains insufficiently understood. To bridge this gap, we synthesized and studied a series of donor-acceptor-acceptor (D-A-A<sup>1</sup>) organic dyes incorporating various chalcogenadiazole acceptors (A) and a cyanoacrylic acid acceptor (A<sup>1</sup>). Using spectroscopic analysis and TD-DFT calculations, we examined changes in electronic and geometric structures induced by subtle modifications in the acceptor units. Our findings reveal that compounds featuring an additional nitrogen atom in the ortho-position adopt a planar geometry in the first excited singlet state, leading to a blue shift in the emission spectrum while maintaining a high luminescence quantum yield of up to 63 % in cyclohexane. The results demonstrate that a planar excited-state geometry enhances ICT emission efficiency compared to a twisted configuration. Additionally, we identified a distinct solvatochromic behavior in the studied dyes. These insights contribute to a deeper understanding of the TICT mechanism and provide a new strategy for designing highly luminescent organic dyes.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112761"},"PeriodicalIF":4.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679017","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