Dyes and PigmentsPub Date : 2025-04-03DOI: 10.1016/j.dyepig.2025.112804
Ziyu Lan , Xiaobin Dong , Ruiqi Sun , Zuguo Yang , Ben Zhong Tang , Zujin Zhao
{"title":"New sandwich-structured blue thermally activated delayed fluorescence molecules with through-space charge transfer effect","authors":"Ziyu Lan , Xiaobin Dong , Ruiqi Sun , Zuguo Yang , Ben Zhong Tang , Zujin Zhao","doi":"10.1016/j.dyepig.2025.112804","DOIUrl":"10.1016/j.dyepig.2025.112804","url":null,"abstract":"<div><div>Efficient blue thermally activated delayed fluorescence (TADF) materials are highly desired for the development of organic light-emitting diodes (OLEDs) but remain challenge. This study reports the synthesis and characterization of two new blue TADF molecules (2CzTXT and 2PCzTXT) with a sandwich structure consisting of thioxanthone (TXT) donor, 9-phenylcarbazole (PCz) donors, and 3,6-di-<em>tert</em>-butyl-9H-carbazol (2<em>t</em>Cz) bridge. The crystal configurations, thermal stability, electrochemical behaviors, electronic structures and photophysical properties are systematically studied by experimental measurements and theoretical calculations. Both molecules exhibit prominent through-space charge transfer (TSCT) feature and strong TADF in doped films with good quantum yields. The OLEDs using both molecules as emitters provide blue electroluminescence (EL) peaking at 470 and 490 nm with good external quantum efficiencies of 11.03 % and 8.58 %, respectively. The results acquired in this study should be conducive to the development of efficient blue TADF emitters based on TSCT effect.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112804"},"PeriodicalIF":4.1,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790929","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 : 2025-04-03DOI: 10.1016/j.dyepig.2025.112800
Amal Adnan Ashour , Abeer Alubaidi , Alaa Shafie
{"title":"Recent advances in dual-channel colorimetric and fluorometric probes for selective Sn2+ detection: Bioimaging and environmental perspectives","authors":"Amal Adnan Ashour , Abeer Alubaidi , Alaa Shafie","doi":"10.1016/j.dyepig.2025.112800","DOIUrl":"10.1016/j.dyepig.2025.112800","url":null,"abstract":"<div><div>The detection of Sn<sup>2+</sup> ions is critical in both biomedical and environmental contexts due to their dual role as essential elements and potential toxins. Recent advancements in dual-channel colorimetric and fluorometric probes have revolutionized Sn<sup>2+</sup> detection, offering unprecedented sensitivity, selectivity, and real-time monitoring capabilities. These probes integrate colorimetric and fluorometric mechanisms, providing dual verification and enhanced reliability. Innovations in molecular design, including organic compounds and nanomaterials, have expanded their utility in diverse environments. In bioimaging, these probes enable precise intracellular localization and dynamic Sn<sup>2+</sup> tracking, unlocking new insights into cellular processes. Environmentally, they empower rapid and portable monitoring of Sn<sup>2+</sup> contamination in water, soil, and industrial effluents, ensuring ecosystem safety. This review aims to provide a comprehensive overview of recent advancements in the development of dual-channel colorimetric and fluorometric probes for the selective detection of Sn<sup>2+</sup> ions. The focus is on summarizing innovative design strategies and sensing mechanisms that enhance probe selectivity and sensitivity. Additionally, the review highlights the practical applications of these probes in bioimaging and environmental monitoring, addressing current challenges and potential future directions in the field. By consolidating key findings, the review seeks to guide researchers in the development of next-generation probes with improved performance and multifunctionality.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112800"},"PeriodicalIF":4.1,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800160","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":"Tetraphenylethylene-based aggregation-induced emission luminogens with mechanofluorochromism and Fe2+/Fe3+ detection applications","authors":"Lingling Li , Zewen Zhai , Wenjing Zhang, Shuai Lu, Bing Song, Xue-Mei Zhao, Xinju Zhu, Xin-Qi Hao","doi":"10.1016/j.dyepig.2025.112805","DOIUrl":"10.1016/j.dyepig.2025.112805","url":null,"abstract":"<div><div>Five novel tetraphenylethylene-based donor-acceptor (D-A) fluorescent luminogens <strong>TPE-1</strong>-<strong>5</strong> were designed and synthesized. All five molecules exhibit solvatochromism and aggregation-induced emission (AIE) behavior with bright tunable emission colors in the solid state. Importantly, <strong>TPE-1</strong> and <strong>TPE-2</strong> display red-shifted mechanofluorochromic (MFC) properties under external force, which can be converted to the original state upon fumigation of dichloromethane. According to powder X-ray diffraction (PXRD) analysis, the MFC phenomena are related with crystalline-to-crystalline phase transition. Their emission behavior were further investigated by density functional theory (DFT) calculations and singly crystal X-ray analysis (XRD), which clearly demonstrates that <strong>TPE-1</strong>-<strong>5</strong> adopt highly twisted conformational structures with intrinsic intramolecular charge transfer (ICT) properties. Moreover, <strong>TPE-5</strong> demonstrates fluorescence sensing capability for both Fe<sup>2+</sup> and Fe<sup>3+</sup> with high sensitivity and anti-interference performance.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112805"},"PeriodicalIF":4.1,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790926","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":"The preparation and characterization of a novel ADP sensor based on dipicolylamine-copper(II)/phenylboronic-acid modified cyclodextrin inclusion complex","authors":"Masaki Ishida , Shoji Fujiwara , Kyohei Tsutsumi , Shohei Minagawa , Yuji Tsuchido , Takeshi Hashimoto , Takashi Hayashita","doi":"10.1016/j.dyepig.2025.112798","DOIUrl":"10.1016/j.dyepig.2025.112798","url":null,"abstract":"<div><div>We designed a supramolecular complex consisting of a dipicolylamine copper complex with an azobenzene group and phenylboronic acid-modified cyclodextrin for adenosine 5′-diphosphate (ADP) recognition in water. Evaluating its phosphate recognition ability through UV–vis and induced circular dichroism spectroscopy demonstrated high selectivity and a large binding constant for ADP in water. Further investigation into the recognition mechanism suggested that the high sensitivity is due to the formation of a supramolecular complex through a combination of four weak interactions.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112798"},"PeriodicalIF":4.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807888","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 : 2025-04-02DOI: 10.1016/j.dyepig.2025.112794
Carlos Lodeiro , José Luis Capelo-Martínez
{"title":"Advancing the field of colored and emissive materials: 6th IC3EM, Unveils the future and Evolution","authors":"Carlos Lodeiro , José Luis Capelo-Martínez","doi":"10.1016/j.dyepig.2025.112794","DOIUrl":"10.1016/j.dyepig.2025.112794","url":null,"abstract":"","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112794"},"PeriodicalIF":4.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845098","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 : 2025-04-02DOI: 10.1016/j.dyepig.2025.112797
Qiu Jin , Renping Zeng , Xinghang Chen , Zi You , Weibin Bai , Huanping Yang
{"title":"Multicolor-emitting fluorescent hydrogels based on asymmetric diaryldibenzofulvenes as the ion-responsive switching","authors":"Qiu Jin , Renping Zeng , Xinghang Chen , Zi You , Weibin Bai , Huanping Yang","doi":"10.1016/j.dyepig.2025.112797","DOIUrl":"10.1016/j.dyepig.2025.112797","url":null,"abstract":"<div><div>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 (Fe<sup>3+</sup>, Co<sup>2+</sup>), due to the weak cross-linking between ions and hydrogel matrix. Meanwhile, the weak interaction could be unlocked by H<sup>+</sup> 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<sup>+</sup> 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.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112797"},"PeriodicalIF":4.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776507","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 : 2025-04-02DOI: 10.1016/j.dyepig.2025.112765
Hua Feng , Mingyue Dong , Zhiqiang Yang , Bing Yang , Fushun Liang , Zhongmin Su
{"title":"Achieving room-temperature phosphorescence of coumarin derivatives by hydrogen-bonding networks and multicolor superfluorescence by resonance energy transfer","authors":"Hua Feng , Mingyue Dong , Zhiqiang Yang , Bing Yang , Fushun Liang , Zhongmin Su","doi":"10.1016/j.dyepig.2025.112765","DOIUrl":"10.1016/j.dyepig.2025.112765","url":null,"abstract":"<div><div>Room-temperature phosphorescence (RTP) materials hold promise for applications in bioimaging, anti-counterfeiting, and optoelectronics, yet the design of purely organic RTP materials remains challenging due to significant non-radiative deactivation pathways. This study demonstrates a hydrogen-bonding strategy to suppress non-radiative transitions. Photophysical characterizations revealed that CCA/PAA exhibits green afterglow with a lifetime of 374 ms, while the BrCCA/PAA film achieved an enhanced quantum yield of 27.88 % due to the heavy-atom effect of the bromine. Further, by incorporating fluorescent dyes into CCA/PAA, multicolor Superfluorescence was achieved through triplet-to-singlet resonance energy transfer. These findings demonstrated the capability to tune afterglow colors and lifetimes by varying the doping ratios and energy acceptor types. This work not only provides insights into the role of hydrogen bonding and heavy-atom effects in RTP materials but also offers a pathway for designing advanced optical materials with tunable and high-performance characteristics.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112765"},"PeriodicalIF":4.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816103","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 : 2025-04-02DOI: 10.1016/j.dyepig.2025.112796
Hye Yeon Park , Jooho Lee , Chul Woong Joo , Hyunjun Jang , Ye ji Hyeon , Baeksang Sung , Hyunji Park , Jinhwa Kim , Soon-Ki Kwon , Jonghee Lee , Yun-Hi Kim
{"title":"High-efficiency and Low Roll-Off Red Phosphorescent Organic Light-emitting Diodes Enabled by Phenanthridine-based Bipolar Host Materials","authors":"Hye Yeon Park , Jooho Lee , Chul Woong Joo , Hyunjun Jang , Ye ji Hyeon , Baeksang Sung , Hyunji Park , Jinhwa Kim , Soon-Ki Kwon , Jonghee Lee , Yun-Hi Kim","doi":"10.1016/j.dyepig.2025.112796","DOIUrl":"10.1016/j.dyepig.2025.112796","url":null,"abstract":"<div><div>In this study, we report the synthesis of two host materials for high-efficiency and highly stable organic light-emitting diodes (OLEDs): 3-[4’-(triphenylsilyl)phenyl)-9H-carbazole]-6-phenylbenzofuro [3,2-k]phenanthridine (BF-PTD-SiCz) and 3-[4’-(triphenylsilyl)phenyl)-9H-carbazole]-6-phenylbenzo [4,5]thieno [3,2-k]phenanthridine (BT-PTD-SiCz). These phenanthridine-based bipolar host materials were synthesized via Ullman and Suzuki coupling reactions, reduction, nucleophilic acyl substitution, and reductive cyclization. Both materials exhibited excellent thermal stability. Red phosphorescent OLEDs (PhOLEDs) fabricated using BF-PTD-SiCz and BT-PTD-SiCz as hosts demonstrated improved roll-off characteristics compared to those of PhOLEDs that employed the conventional 4,4′-bis(N-carbazolyl)-1,1′-biphenyl (CBP) host. In particular, the BF-PTD-SiCz-based device exhibited an external quantum efficiency (EQE) of 13.86 %. These results indicate that BF-PTD-SiCz and BT-PTD-SiCz are well suited for use in high-efficiency red PhOLEDs.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112796"},"PeriodicalIF":4.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800159","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 : 2025-04-02DOI: 10.1016/j.dyepig.2025.112802
F.S. Abd El-kawy , S. Hammad , H. Talaat , M. Ghali
{"title":"Effective UV and blue light blocking filters with high visible transparency utilizing graphene quantum dots","authors":"F.S. Abd El-kawy , S. Hammad , H. Talaat , M. Ghali","doi":"10.1016/j.dyepig.2025.112802","DOIUrl":"10.1016/j.dyepig.2025.112802","url":null,"abstract":"<div><div>In the current technological era, our eyes suffer serious diseases as a consequence of exposure to ultraviolet and blue radiation from light-emitting devices. Accordingly, the development of materials with effective absorption abilities for UV and blue light is in high demand. Here, we report the synthesis of graphene quantum dots (GQDs) from Moringa oleifera leaves utilizing the hydrothermal technique. Different amounts from the prepared GQDs solution were added to the Poly(vinyl) alcohol (PVA) to fabricate UV and blue light-blocking films with concentrations of (0, 3, 5, 7, 9, 10 %). These films were examined to explore their blocking potential. Interestingly, the data demonstrate that GQDs/PVA films can block up to 97.68 % and 96.21 % of harmful UV and blue light, respectively, with transmittance greater than 70 % in the visible regions (>600 nm). Further, the films were applied to WLED commercial lamps, and it was found that with increasing GQD concentrations, the blue region decreased with a blocking ratio of up to 91.38 %, and the LED light was changed from cool (6310 K) to warm (3300 K) white LEDs. These results prove that the sustainably fabricated GQDs films have strong down photoconversion ability and remarkable absorption in the UV and blue light regions.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"239 ","pages":"Article 112802"},"PeriodicalIF":4.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800153","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}