Pub Date : 2025-02-21DOI: 10.1016/j.carbon.2025.120053
Jing-jing Yan , Xiao-hao Fang , De-zhou Yao , Cheng-wei Zhu , Jian-jun Shi , Shan-shan Qian
{"title":"N/O co-doped microporous carbon as a high-performance electrode for supercapacitors","authors":"Jing-jing Yan , Xiao-hao Fang , De-zhou Yao , Cheng-wei Zhu , Jian-jun Shi , Shan-shan Qian","doi":"10.1016/j.carbon.2025.120053","DOIUrl":"10.1016/j.carbon.2025.120053","url":null,"abstract":"","PeriodicalId":262,"journal":{"name":"Carbon","volume":"235 ","pages":"Article 120053"},"PeriodicalIF":10.5,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xu Zhang, Zhihao Wang, Shuang Liu, Meiting Lu, Yuanyuan Wang, Bianlin Luo, Tong Shen, Zhiyu Ren, Zhimin Chen, Bo Liu
Electrochemical reconstruction typically generates powerful active sites for the oxygen evolution reaction (OER). However, engineering effective reconstruction strategies to manipulate the in situ formation of desired catalytically active surfaces, generate powerful active sites, and enhance their catalytic performance remains a challenge. Herein, leveraging the oxidation-potential-assisted precipitation etching, a heterostructure of NiFeOOH/NiFe phosphate was meticulously engineered to achieve highly efficient OER. During the electrochemical reconstruction, the leaching of inactive PO43– species in NiFe phosphate facilitates the exposure of more Ni and/or Fe species and creates more pores, thereby contributing to the formation of a NiFeOOH layer on the surface of NiFe phosphate. The resultant NiFeOOH/NiFe phosphate exhibits excellent OER activity with an overpotential of 205 mV at 50 mA cm–2 in an alkaline electrolyte. The theoretical calculations reveal that the heterostructure of NiFeOOH/NiFe phosphate weakens the thermodynamic barrier from *O to *OOH, thus enhancing the OER activity. The present proof-of-concept study introduces a leaching engineering approach to facilitate further exploration and development of highly efficient energy-related applications.
{"title":"Leaching-Reconstruction Engineering of Anions on Ferronickel Phosphate Promotes the Enhancement of the Oxygen Evolution Reaction","authors":"Xu Zhang, Zhihao Wang, Shuang Liu, Meiting Lu, Yuanyuan Wang, Bianlin Luo, Tong Shen, Zhiyu Ren, Zhimin Chen, Bo Liu","doi":"10.1021/acsami.4c19888","DOIUrl":"https://doi.org/10.1021/acsami.4c19888","url":null,"abstract":"Electrochemical reconstruction typically generates powerful active sites for the oxygen evolution reaction (OER). However, engineering effective reconstruction strategies to manipulate the in situ formation of desired catalytically active surfaces, generate powerful active sites, and enhance their catalytic performance remains a challenge. Herein, leveraging the oxidation-potential-assisted precipitation etching, a heterostructure of NiFeOOH/NiFe phosphate was meticulously engineered to achieve highly efficient OER. During the electrochemical reconstruction, the leaching of inactive PO<sub>4</sub><sup>3–</sup> species in NiFe phosphate facilitates the exposure of more Ni and/or Fe species and creates more pores, thereby contributing to the formation of a NiFeOOH layer on the surface of NiFe phosphate. The resultant NiFeOOH/NiFe phosphate exhibits excellent OER activity with an overpotential of 205 mV at 50 mA cm<sup>–2</sup> in an alkaline electrolyte. The theoretical calculations reveal that the heterostructure of NiFeOOH/NiFe phosphate weakens the thermodynamic barrier from *O to *OOH, thus enhancing the OER activity. The present proof-of-concept study introduces a leaching engineering approach to facilitate further exploration and development of highly efficient energy-related applications.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"65 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elena R. Remesal, Victor Posligua, Miguel Mahillo-Paniagua, Konstantin Glazyrin, Javier Fdez. Sanz, Antonio M. Márquez, Jose J. Plata
Correction for ‘Enhancing the thermoelectric figure of merit of BiN via polymorphism, pressure, and nanostructuring’ by Elena R. Remesal et al., J. Mater. Chem. A, 2025, 13, 220–229, https://doi.org/10.1039/D4TA05891G.
{"title":"Correction: Enhancing the thermoelectric figure of merit of BiN via polymorphism, pressure, and nanostructuring","authors":"Elena R. Remesal, Victor Posligua, Miguel Mahillo-Paniagua, Konstantin Glazyrin, Javier Fdez. Sanz, Antonio M. Márquez, Jose J. Plata","doi":"10.1039/d5ta90047f","DOIUrl":"https://doi.org/10.1039/d5ta90047f","url":null,"abstract":"Correction for ‘Enhancing the thermoelectric figure of merit of BiN <em>via</em> polymorphism, pressure, and nanostructuring’ by Elena R. Remesal <em>et al.</em>, <em>J. Mater. Chem. A</em>, 2025, <strong>13</strong>, 220–229, https://doi.org/10.1039/D4TA05891G.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"25 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-21DOI: 10.1038/s41560-025-01715-x
Daniel Navia Simon, Laura Diaz Anadon
Increasing solar photovoltaic and wind generation capacity beyond European 2030 targets could make electricity prices more stable, with reductions in sensitivity to fluctuations in the price of natural gas possibly outweighing the increasing influence of weather effects. Energy policies should account for the macroeconomic benefits of more stable energy prices as an important motivation for the deployment of renewables, in addition to their contribution to the mitigation of climate change.
{"title":"Faster deployment of renewables stabilizes electricity prices in Europe","authors":"Daniel Navia Simon, Laura Diaz Anadon","doi":"10.1038/s41560-025-01715-x","DOIUrl":"https://doi.org/10.1038/s41560-025-01715-x","url":null,"abstract":"Increasing solar photovoltaic and wind generation capacity beyond European 2030 targets could make electricity prices more stable, with reductions in sensitivity to fluctuations in the price of natural gas possibly outweighing the increasing influence of weather effects. Energy policies should account for the macroeconomic benefits of more stable energy prices as an important motivation for the deployment of renewables, in addition to their contribution to the mitigation of climate change.","PeriodicalId":19073,"journal":{"name":"Nature Energy","volume":"12 1","pages":""},"PeriodicalIF":56.7,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Treatment of osteoarthritis (OA) remains challenging owing to its complex pathological microenvironment, which involves reactive oxygen species, chronic inflammation, mitochondrial dysfunction, energy deficiency, and cartilage degeneration. Herein, we report for extracellular vesicles (SP-EVs) derived from the photosynthetic microorganism Spirulina platensis contain antioxidative and ATP-dependent active and metabolic-related compounds for OA treatment. SP-EVs were effectively delivered to chondrocytes, demonstrating the potential for modulating cellular communication and energy homeostasis. To facilitate sustained delivery of SP-EVs, the rhein hydrogel system was used for intra-articular injection (Rh Gel@SP-EVs), which demonstrated pH responsiveness under mildly acidic conditions and synergistic anti-inflammatory effects. Rh Gel@SP-EVs significantly rescued mitochondrial dysfunction by ameliorating inflammation-mediated oxidative stress and restoring the mitochondrial membrane potential in chondrocytes. Improved mitochondrial function facilitates the replenishment of ATP levels, further contributing to the balance of anabolic and catabolic processes within the cartilage matrix, eventually decelerating OA progression. Rh Gel@SP-EVs also modulated the Janus kinase-signal transducer and activator of transcription 3 signaling pathway, implicated in suppressing inflammatory responses. This therapeutic strategy utilized a microalgae-based herbal hydrogel system to modulate the sustained release of SP-EVs, offering an effective approach for treating OA by regulating energy metabolism and anti-inflammatory mechanisms.
{"title":"Microalgae-Derived Extracellular Vesicles Synergize with Herbal Hydrogel for Energy Homeostasis in Osteoarthritis Treatment","authors":"Feng Liang, Yixin Zheng, Chenchen Zhao, Lele Li, Yunqi Hu, Chenfeng Wang, Ruoxi Wang, Ting Feng, Xiaoyang Liu, Jiarong Cui, Danni Zhong, Min Zhou","doi":"10.1021/acsnano.4c16085","DOIUrl":"https://doi.org/10.1021/acsnano.4c16085","url":null,"abstract":"Treatment of osteoarthritis (OA) remains challenging owing to its complex pathological microenvironment, which involves reactive oxygen species, chronic inflammation, mitochondrial dysfunction, energy deficiency, and cartilage degeneration. Herein, we report for extracellular vesicles (SP-EVs) derived from the photosynthetic microorganism <i>Spirulina platensis</i> contain antioxidative and ATP-dependent active and metabolic-related compounds for OA treatment. SP-EVs were effectively delivered to chondrocytes, demonstrating the potential for modulating cellular communication and energy homeostasis. To facilitate sustained delivery of SP-EVs, the rhein hydrogel system was used for intra-articular injection (Rh Gel@SP-EVs), which demonstrated pH responsiveness under mildly acidic conditions and synergistic anti-inflammatory effects. Rh Gel@SP-EVs significantly rescued mitochondrial dysfunction by ameliorating inflammation-mediated oxidative stress and restoring the mitochondrial membrane potential in chondrocytes. Improved mitochondrial function facilitates the replenishment of ATP levels, further contributing to the balance of anabolic and catabolic processes within the cartilage matrix, eventually decelerating OA progression. Rh Gel@SP-EVs also modulated the Janus kinase-signal transducer and activator of transcription 3 signaling pathway, implicated in suppressing inflammatory responses. This therapeutic strategy utilized a microalgae-based herbal hydrogel system to modulate the sustained release of SP-EVs, offering an effective approach for treating OA by regulating energy metabolism and anti-inflammatory mechanisms.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"17 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jordan A. Gusdorff, Pia Bhatia, Trey T. Shin, Alexandra Sofia Uy-Tioco, Benjamin N. Sailors, Rachael N. Keneipp, Marija Drndić, Lee C. Bassett
Hexagonal boron nitride (hBN) plays a central role in nanoelectronics and nanophotonics. Moreover, hBN hosts room-temperature quantum emitters and optically addressable spins, making the material promising for quantum sensing and photonics. Despite significant investigation of the optical and structural properties of hBN, the role of contamination at surfaces and interfaces remains unexplored. We prepare hBN samples that are compatible with confocal photoluminescence (PL) microscopy, transmission electron microscopy (TEM), and atomic-force microscopy (AFM), and we use those techniques to quantitatively investigate correlations between fluorescent emission, flake morphology, and surface residue. We find that the microscopy techniques themselves induce changes in hBN’s optical activity and residue morphology: PL measurements induce photobleaching, whereas TEM measurements alter surface residue and emission characteristics. We also study the effects of common treatments─annealing and oxygen plasma cleaning─on the structure and optical activity of hBN. The methods can be broadly applied to study two-dimensional materials, and the results illustrate the importance of correlative studies to elucidate factors that influence hBN’s structural and optical properties.
{"title":"Correlated Structural and Optical Characterization of Hexagonal Boron Nitride","authors":"Jordan A. Gusdorff, Pia Bhatia, Trey T. Shin, Alexandra Sofia Uy-Tioco, Benjamin N. Sailors, Rachael N. Keneipp, Marija Drndić, Lee C. Bassett","doi":"10.1021/acsnano.4c17676","DOIUrl":"https://doi.org/10.1021/acsnano.4c17676","url":null,"abstract":"Hexagonal boron nitride (hBN) plays a central role in nanoelectronics and nanophotonics. Moreover, hBN hosts room-temperature quantum emitters and optically addressable spins, making the material promising for quantum sensing and photonics. Despite significant investigation of the optical and structural properties of hBN, the role of contamination at surfaces and interfaces remains unexplored. We prepare hBN samples that are compatible with confocal photoluminescence (PL) microscopy, transmission electron microscopy (TEM), and atomic-force microscopy (AFM), and we use those techniques to quantitatively investigate correlations between fluorescent emission, flake morphology, and surface residue. We find that the microscopy techniques themselves induce changes in hBN’s optical activity and residue morphology: PL measurements induce photobleaching, whereas TEM measurements alter surface residue and emission characteristics. We also study the effects of common treatments─annealing and oxygen plasma cleaning─on the structure and optical activity of hBN. The methods can be broadly applied to study two-dimensional materials, and the results illustrate the importance of correlative studies to elucidate factors that influence hBN’s structural and optical properties.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"87 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kanghui Ke, Yu Gao, Jiazhi Meng, Yi He, Bohua Deng, Haoyu Huang, Si-Wei Zhang, Kai Zhang, Zhuhua Xu, Huan Li, Xiongxian Yao, Zilong Ye, Liping Song, Chang Shu, Shihe Yang, Ni Qin, H. Y. Fu, Hin-Lap Yip, Feiyu Kang, Guodan Wei
Developing stable and efficient photodetectors (PDs) for environmentally friendly applications such as biological imaging, optical communications, and wearable electronics demands novel materials with improved optoelectronic properties. Herein, by precisely controlling the Pb2⁺ content (3%, 6%, and 12%) using a galvanic displacement reaction (GDR), we created a mixed 2D/3D phase structure that enhances the quality of the Sn-Pb thin films, which improved crystalline orientation, suppressed trap-assisted recombination and reduced Sn2+ oxidation processes, resulting in superior environmental stability under air exposure conditions. The flexible device demonstrated robust stability, maintaining performance after 4000 bending cycles or 96 h of storage in ambient conditions. The self-powered quasi-2D Sn-Pb PDs exhibit an impressively low dark current of 1.2 × 10−8 A cm−2, rapid rise and decay time of 684 and 683 ns, a peak responsivity of 405 mA W−1, and a peak detectivity of 1.19 × 1013 Jones at 710 nm. Additionally, under LED illumination (λ = 910 nm), the photodetectors also demonstrate high fidelity in optical signal transmission, successfully facilitating encrypted communication sequences and image transmission at a rate of 25 kbps. This work presents a promising strategy for developing high-performance, stable quasi-2D Sn-Pb perovskite photodetectors, highlighting their potential for next-generation photodetectors in flexible, real-world environments.
{"title":"High-Performance Quasi-2D Sn-Pb Perovskite Photodetectors for High-Fidelity Image Sensing and Optical Communication","authors":"Kanghui Ke, Yu Gao, Jiazhi Meng, Yi He, Bohua Deng, Haoyu Huang, Si-Wei Zhang, Kai Zhang, Zhuhua Xu, Huan Li, Xiongxian Yao, Zilong Ye, Liping Song, Chang Shu, Shihe Yang, Ni Qin, H. Y. Fu, Hin-Lap Yip, Feiyu Kang, Guodan Wei","doi":"10.1002/adfm.202424340","DOIUrl":"https://doi.org/10.1002/adfm.202424340","url":null,"abstract":"Developing stable and efficient photodetectors (PDs) for environmentally friendly applications such as biological imaging, optical communications, and wearable electronics demands novel materials with improved optoelectronic properties. Herein, by precisely controlling the Pb<sup>2</sup>⁺ content (3%, 6%, and 12%) using a galvanic displacement reaction (GDR), we created a mixed 2D/3D phase structure that enhances the quality of the Sn-Pb thin films, which improved crystalline orientation, suppressed trap-assisted recombination and reduced Sn<sup>2+</sup> oxidation processes, resulting in superior environmental stability under air exposure conditions. The flexible device demonstrated robust stability, maintaining performance after 4000 bending cycles or 96 h of storage in ambient conditions. The self-powered quasi-2D Sn-Pb PDs exhibit an impressively low dark current of 1.2 × 10<sup>−8</sup> A cm<sup>−2</sup>, rapid rise and decay time of 684 and 683 ns, a peak responsivity of 405 mA W<sup>−1</sup>, and a peak detectivity of 1.19 × 10<sup>13</sup> Jones at 710 nm. Additionally, under LED illumination (λ = 910 nm), the photodetectors also demonstrate high fidelity in optical signal transmission, successfully facilitating encrypted communication sequences and image transmission at a rate of 25 kbps. This work presents a promising strategy for developing high-performance, stable quasi-2D Sn-Pb perovskite photodetectors, highlighting their potential for next-generation photodetectors in flexible, real-world environments.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"50 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fangtian Liu, Yang Wu, Min Zheng, Yifei Liu, Shiyi Cao, Yijin Qiu, Ze Zhao, Hongbing Deng
The biological and environmental hazards of nanoplastics are increasingly recognized, driving the need for effective and sustainable removal methods. Hydrophobic adsorbent materials with high surface areas are promising for capturing hydrophobic nanoplastics, yet achieving these properties in an eco-friendly, energy-efficient manner remains challenging. In this study, we turned to nature and proposed a synergistic hydrophilic-hydrophobic inlay strategy that employs hydrophilic bio-macromolecule β-chitin to assemble bio-microparticle pollen featuring inherent hydrophobicity and micro/nano-patterns. The resulting pollen-chitin sponge possesses a porous, hydrophobic architecture enriched with unique components such as aromatic rings and acetylamino groups. This assembly promotes strong interpenetration and interconnection between hydrophobic particles and hydrophilic lamellae, enhancing the interaction among hydrophobic pollen particles, water, and nanoplastics. The optimized arrangement of adsorption sites enables high-efficiency nanoplastics removal, achieving an adsorption capacity of up to 236.30 mg g−1. The removal process is primarily driven by hydrogen bond interaction, hydrophobic interaction, physical interception, and π–π interaction. As a result, it successfully purified wastewater contaminated with multi-plastic particles and showed advantageous potential for removing various hydrophobic pollutants. Furthermore, sustainable recycling performance is demonstrated. The natural co-assembly system represents a practical, sustainable combination of multi-scale and multi-component biomass materials for mitigating hydrophobic pollution.
{"title":"Inherently Micro/Nano-Patterned and Hydrophobic-Hydrophilic Inlay Natural Material Assembly for Efficient Nanoplastics Removal","authors":"Fangtian Liu, Yang Wu, Min Zheng, Yifei Liu, Shiyi Cao, Yijin Qiu, Ze Zhao, Hongbing Deng","doi":"10.1002/adfm.202418911","DOIUrl":"https://doi.org/10.1002/adfm.202418911","url":null,"abstract":"The biological and environmental hazards of nanoplastics are increasingly recognized, driving the need for effective and sustainable removal methods. Hydrophobic adsorbent materials with high surface areas are promising for capturing hydrophobic nanoplastics, yet achieving these properties in an eco-friendly, energy-efficient manner remains challenging. In this study, we turned to nature and proposed a synergistic hydrophilic-hydrophobic inlay strategy that employs hydrophilic bio-macromolecule β-chitin to assemble bio-microparticle pollen featuring inherent hydrophobicity and micro/nano-patterns. The resulting pollen-chitin sponge possesses a porous, hydrophobic architecture enriched with unique components such as aromatic rings and acetylamino groups. This assembly promotes strong interpenetration and interconnection between hydrophobic particles and hydrophilic lamellae, enhancing the interaction among hydrophobic pollen particles, water, and nanoplastics. The optimized arrangement of adsorption sites enables high-efficiency nanoplastics removal, achieving an adsorption capacity of up to 236.30 mg g<sup>−1</sup>. The removal process is primarily driven by hydrogen bond interaction, hydrophobic interaction, physical interception, and <i>π</i>–<i>π</i> interaction. As a result, it successfully purified wastewater contaminated with multi-plastic particles and showed advantageous potential for removing various hydrophobic pollutants. Furthermore, sustainable recycling performance is demonstrated. The natural co-assembly system represents a practical, sustainable combination of multi-scale and multi-component biomass materials for mitigating hydrophobic pollution.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"11 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Guangxin Yang, Subin Hao, Yuxin Dan, Li Dang, Han Zhang, Qiang Zhang, Anze Li, Ming-De Li, Wang Zhang Yuan
Organic materials with red persistent phosphorescence hold immense promise for biotechnology due to their excellent tissue permeability and high signal-to-background ratios. However, inefficient spin-orbit coupling, high triplet susceptibility, and narrow energy gapspromoted nonradiative deactivations, pose a formidable obstacle to achieving efficient red phosphorescence. This study addresses these challenges by introducing xanthone (Xan)-based host–guest systems. Utilizing polyaromatic hydrocarbons (PAHs) as guests, efficient red to near-infrared (NIR) phosphorescent materials with ultralong lifetimes and high quantum yields of up to 821 ms and 2.32%, respectively, are successfully developed. Ultrafast spectroscopy and theoretical studies reveal that Dexter energy transfer (DET) is the dominant mechanism responsible for red phosphorescence. This DET process between Xan and PAHs not only effectively utilizes the dark triplet state of the Xan host but also significantly enhances the triplet generation of the PAH guests, transforming them into potent phosphorescent luminophores. Furthermore, the inherent rigidity of Xan and PAHs endows the resulting materials with excellent phosphorescence performance, even at elevated temperatures (e.g., 423 K). This strategy, proven to be general, paves the way for designing efficient red/NIR phosphorescent materials through the DET mechanism, enabling their applications in molecular imaging and advanced high-temperature encryption.
{"title":"Red Phosphorescence at Elevated Temperatures Enabled by Dexter Energy Transfer in Polyaromatic Hydrocarbon-Xanthone Systems","authors":"Guangxin Yang, Subin Hao, Yuxin Dan, Li Dang, Han Zhang, Qiang Zhang, Anze Li, Ming-De Li, Wang Zhang Yuan","doi":"10.1002/adma.202418042","DOIUrl":"https://doi.org/10.1002/adma.202418042","url":null,"abstract":"Organic materials with red persistent phosphorescence hold immense promise for biotechnology due to their excellent tissue permeability and high signal-to-background ratios. However, inefficient spin-orbit coupling, high triplet susceptibility, and narrow energy gapspromoted nonradiative deactivations, pose a formidable obstacle to achieving efficient red phosphorescence. This study addresses these challenges by introducing xanthone (Xan)-based host–guest systems. Utilizing polyaromatic hydrocarbons (PAHs) as guests, efficient red to near-infrared (NIR) phosphorescent materials with ultralong lifetimes and high quantum yields of up to 821 ms and 2.32%, respectively, are successfully developed. Ultrafast spectroscopy and theoretical studies reveal that Dexter energy transfer (DET) is the dominant mechanism responsible for red phosphorescence. This DET process between Xan and PAHs not only effectively utilizes the dark triplet state of the Xan host but also significantly enhances the triplet generation of the PAH guests, transforming them into potent phosphorescent luminophores. Furthermore, the inherent rigidity of Xan and PAHs endows the resulting materials with excellent phosphorescence performance, even at elevated temperatures (e.g., 423 K). This strategy, proven to be general, paves the way for designing efficient red/NIR phosphorescent materials through the DET mechanism, enabling their applications in molecular imaging and advanced high-temperature encryption.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"26 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143462977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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