FlexMat最新文献 - Book学术

Strategic construction of fluorinated surroundings in NIR-II-emissive organic semiconducting agents for amplifying cancer phototheranostics nir - ii型发光有机半导体剂中氟化环境的战略性构建及其对肿瘤光疗的增强作用

FlexMat Pub Date : 2026-09-23 Epub Date: 2026-02-22 DOI: 10.1002/flm2.70040

Xiaoming Hu, Achen Qin, Caijun Zhu, Jinshuo Mi, Zejing Chen, Jiaying Shao, Zhen Li, Zhen Yang

{"title":"Strategic construction of fluorinated surroundings in NIR-II-emissive organic semiconducting agents for amplifying cancer phototheranostics","authors":"Xiaoming Hu, Achen Qin, Caijun Zhu, Jinshuo Mi, Zejing Chen, Jiaying Shao, Zhen Li, Zhen Yang","doi":"10.1002/flm2.70040","DOIUrl":"https://doi.org/10.1002/flm2.70040","url":null,"abstract":"Organic nanomedicines integrating second near-infrared (NIR-II) fluorescence imaging and photodynamic therapy (PDT) hold substantial potential for precise cancer phototheranostics. However, the competing mechanisms between NIR-II fluorescence emission and phototherapeutic effects pose a fundamental optimization challenge for their concurrent application. To address this, we propose an innovative fluorination strategy by constructing fluorinated surroundings in NIR-II-emissive organic semiconducting agents to synergistically amplify cancer phototheranostics. Our exploiting versatile theranostic agent synergistically combines fluorinated nanocarriers with organic semiconducting photosensitizers, leveraging fluorine's unique physicochemical properties to achieve synergistic-amplification multimodal functionality. The hydrophobic and oleophobic nature of fluorine atoms creates isolated microenvironments for phototheranostic molecule, effectively mitigating molecular aggregation and minimizing interactions with external quenchers, namely the two major factors responsible for fluorescence quenching. Consequently, this structural optimization significantly enhances 2.3-fold NIR-II fluorescence brightness. Additionally, the hydrophobic microenvironment constructed by fluorine-rich polymer carriers minimizes oxygen diffusion loss, imparting superior oxygen-capturing capacity to this nanosystem. This potently overcomes hypoxia limitations in conventional PDT and significantly enhances singlet oxygen generation efficiency by 61.25%. Collectively, this rationally designed platform enables NIR-II fluorescence-guided synergistic PDT and photothermal therapy, effectively overcoming the performance trade-offs in conventional phototheranostics. Our fluorine-engineered approach establishes a novel paradigm for developing new-generation nanotheranostic systems.","PeriodicalId":100533,"journal":{"name":"FlexMat","volume":"3 3","pages":"401-414"},"PeriodicalIF":0.0,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/flm2.70040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent advances in multifunctional soft robots: A materials–structures–systems co-design perspective for synergistic integration 多功能软体机器人的最新进展：协同集成的材料-结构-系统协同设计视角

FlexMat Pub Date : 2026-09-23 Epub Date: 2026-03-14 DOI: 10.1002/flm2.70053

Qiulei Liu, Zicao Peng, Chong Sun, Haitao Yang

{"title":"Recent advances in multifunctional soft robots: A materials–structures–systems co-design perspective for synergistic integration","authors":"Qiulei Liu, Zicao Peng, Chong Sun, Haitao Yang","doi":"10.1002/flm2.70053","DOIUrl":"https://doi.org/10.1002/flm2.70053","url":null,"abstract":"Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio-inspiration and material programmability, have led to the rapid co-evolution of their core modules: actuation, sensing, protection, energy, and communication. A fundamental challenge lies in integrating these diverse functionalities into a cohesive system without compromising soft robotic performance. Here we show that a rational “materials-structures-systems” co-design strategy is pivotal for achieving this multifunctional integration. While existing reviews often compartmentalize advances by functional modules, this review synthesizes a unified framework demonstrating how such synergistic design enables tight coupling of functionalities, thereby overcoming the traditional trade-offs between compliance and capability. This approach significantly expands the operational autonomy and environmental resilience of soft robots. The resulting framework not only advances soft robotics but also provides a cross-disciplinary methodology for innovation in biomedical devices, environmental exploration, and human-robot interaction, marking a transition from laboratory prototypes to deployable systems for real-world challenges.","PeriodicalId":100533,"journal":{"name":"FlexMat","volume":"3 3","pages":"452-501"},"PeriodicalIF":0.0,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/flm2.70053","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laser-assisted in situ fabrication of atomically thin Ga2O3 films for dielectric applications 电介质用原子薄Ga2O3薄膜的激光辅助原位制备

FlexMat Pub Date : 2026-09-23 Epub Date: 2026-04-08 DOI: 10.1002/flm2.70064

Erzhuo Zhang, Guangyu Yang, Qiwei Sun, Jing Liu, Han Wang, Junran Zhang, Junlei Zhao, Lin Wang, Mengyuan Hua, Xiaolong Chen

{"title":"Laser-assisted in situ fabrication of atomically thin Ga2O3 films for dielectric applications","authors":"Erzhuo Zhang, Guangyu Yang, Qiwei Sun, Jing Liu, Han Wang, Junran Zhang, Junlei Zhao, Lin Wang, Mengyuan Hua, Xiaolong Chen","doi":"10.1002/flm2.70064","DOIUrl":"https://doi.org/10.1002/flm2.70064","url":null,"abstract":"Two-dimensional (2D) gallium oxide (Ga2O3) has emerged as a high-κ dielectric material for optoelectronic applications due to its ultra-wide bandgap and large-scale productivity. However, the usage of thermal treatment during the liquid-metal-assisted fabrication process could degrade the quality of channel materials. Here, we report a laser-assisted in situ oxidation method combined with a confinement template-assisted squeeze technique to fabricate centimeter-scale 2D atomically thin Ga2O3 films from liquid gallium metal surfaces at room temperature. This approach avoids thermal damage to vulnerable materials. The laser-accelerated oxidation mechanism is elucidated as photocatalytic oxidation of initial Ga/Ga2O3−x surface through the integration of multi-wavelength laser radiation experiments and density functional theory calculations. We further demonstrate top-gated field-effect transistors (FETs) using black phosphorus (BP) and MoS2 as channel materials, with thin-film Ga2O3 as the gate dielectrics. BP-based FETs show gate-tunable mid-infrared photoresponse with responsivity at the order of 0.1 A·W−1 level. MoS2-based FETs exhibit a photo-detectivity of 6.8 × 1012 Jones in the visible-light spectrum, an on/off ratio over 108, a subthreshold swing of 73.6 mV decade−1, and gate leakage currents below 4 × 10−6 A cm−2 at 8 MV cm−1. This room-temperature laser-oxidation approach enables scalable integration of ultrathin oxide dielectrics with sensitive 2D materials for next-generation nanoelectronics.","PeriodicalId":100533,"journal":{"name":"FlexMat","volume":"3 3","pages":"382-391"},"PeriodicalIF":0.0,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/flm2.70064","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strengthened inter-chain π–π contacts in amorphous diketopyrrolopyrrole polymers for robust flexible organic thin-film transistors 用于柔性有机薄膜晶体管的非晶二酮吡咯聚合物中强化链间π -π接触

FlexMat Pub Date : 2026-09-23 Epub Date: 2026-02-19 DOI: 10.1002/flm2.70043

Yanlin Chen, Shihong Zhou, Tianwen Chen, Zitong Liu, Zhiwei Yang, Haijun Long, Xianfeng Liang, Xiao Xue, Chenyang Lu, Cailong Zhou, Lichun Dong, Luxi Tan

{"title":"Strengthened inter-chain π–π contacts in amorphous diketopyrrolopyrrole polymers for robust flexible organic thin-film transistors","authors":"Yanlin Chen, Shihong Zhou, Tianwen Chen, Zitong Liu, Zhiwei Yang, Haijun Long, Xianfeng Liang, Xiao Xue, Chenyang Lu, Cailong Zhou, Lichun Dong, Luxi Tan","doi":"10.1002/flm2.70043","DOIUrl":"https://doi.org/10.1002/flm2.70043","url":null,"abstract":"Flexible organic thin-film transistors (OTFTs) based on multi-vinylene-linked diketopyrrolopyrrole (DPP) polymers were developed to address the trade-off between mechanical flexibility and charge transport. Three polymers incorporating thiophene, dithiophene, and terthiophene donor motifs (PDPPVT, PDPPVDT, and PDPPVTT) were synthesized via a halogen-free Knoevenagel condensation. Despite their predominantly amorphous film morphologies induced by vinylene isomerization, grazing-incidence wide-angle X-ray scattering analyses revealed strengthened inter-chain π–π stacking with increasing donor ring size. Correspondingly, top-gate/bottom-contact (TGBC) OTFTs fabricated from these polymers exhibited progressively enhanced hole mobilities, reaching 1.203 cm2 V−1 s−1 for PDPPVTT, surpassing the benchmark of amorphous silicon. The devices also demonstrated excellent mechanical reliability, retaining over 94% of their initial mobility under bending radii down to 2.5 mm and preserving approximately 90% of performance after 1000 bending cycles. These findings establish vinylene isomerization as an effective strategy for enhancing mechanical flexibility, while donor expansion provides a complementary route to high mobility. Collectively, this work offers a structural design framework for multi-vinylene-linked conjugated polymers, underscoring their strong potential for next-generation flexible electronic applications.","PeriodicalId":100533,"journal":{"name":"FlexMat","volume":"3 3","pages":"392-400"},"PeriodicalIF":0.0,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/flm2.70043","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical stability in flexible perovskite solar cells: Interface engineering and device design 柔性钙钛矿太阳能电池的机械稳定性：界面工程和器件设计

FlexMat Pub Date : 2026-09-23 Epub Date: 2026-04-08 DOI: 10.1002/flm2.70070

Hong-Yi Hou, Xin-Yi Zeng, Jian-Xin Tang, Yan-Qing Li

{"title":"Mechanical stability in flexible perovskite solar cells: Interface engineering and device design","authors":"Hong-Yi Hou, Xin-Yi Zeng, Jian-Xin Tang, Yan-Qing Li","doi":"10.1002/flm2.70070","DOIUrl":"https://doi.org/10.1002/flm2.70070","url":null,"abstract":"Flexible perovskite solar cells (f-PSCs) demonstrate significant potential for application in next-generation wearable electronic devices and photovoltaic building integration due to their high power conversion efficiency and excellent power-to-weight ratio. However, the inherent brittleness of perovskite materials and the interlayer delamination caused by mechanical property mismatch in multilayer heterostructures severely limit their long-term stability under bending deformation, becoming a key bottleneck hindering their commercialization. In this review, we analyze the physical mechanisms leading to mechanical failure of f-PSCs, including the intrinsic brittleness of the materials and the stress concentration problem in the multilayer stacked structure. Then, we present the latest research advancements in interface engineering and device design. The focus is on discussing the regulation of perovskite crystallization kinetics, the introduction of self-healing polymer networks, the toughening modification of charge transport layers, as well as the development strategies for new flexible substrates and electrodes. Finally, we summarize the current technical challenges and look forward to the future development directions of f-PSCs in the process of moving toward large-scale manufacturing and practical applications, aiming to provide scientific references for the construction of efficient and mechanically stable flexible photovoltaic devices.","PeriodicalId":100533,"journal":{"name":"FlexMat","volume":"3 3","pages":"502-539"},"PeriodicalIF":0.0,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/flm2.70070","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Material design strategies for flexible n-type polymer semiconductors 柔性n型聚合物半导体材料设计策略

FlexMat Pub Date : 2026-09-23 Epub Date: 2026-03-15 DOI: 10.1002/flm2.70055

Xiao-Yan Zhang, Yang-Yang Zhou, Jie-Yu Wang, Jian Pei, Ze-Fan Yao

{"title":"Material design strategies for flexible n-type polymer semiconductors","authors":"Xiao-Yan Zhang, Yang-Yang Zhou, Jie-Yu Wang, Jian Pei, Ze-Fan Yao","doi":"10.1002/flm2.70055","DOIUrl":"https://doi.org/10.1002/flm2.70055","url":null,"abstract":"Flexible n-type polymer semiconductors enable materials for soft, wearable, and biointerfacing electronics, yet their development still lags behind p-type counterparts in both structural diversity and device performance. A unifying design goal is to preserve locally ordered aggregates and continuous percolated charge-transport pathways. In this perspective, we discuss recent advances from the view of multilevel design of conjugated polymers, covering molecular-level backbone and side-chain engineering, microstructure control through molecular-weight optimization, chain orientation modulation, and blending or networking with a soft matrix. Finally, we outline key remaining challenges and future opportunities for flexible n-type polymer semiconductors, including expanding the polymer scope, transitioning from empirical optimization toward predictive design models, building in situ characterization under mechanical deformation, and establishing standardized and application-relevant benchmarking protocols and open access databases, and improving long-term stability as well as manufacturing scalability.","PeriodicalId":100533,"journal":{"name":"FlexMat","volume":"3 3","pages":"540-551"},"PeriodicalIF":0.0,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/flm2.70055","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-synergistic strategy for dual-sensing conductive hydrogels capable of simultaneous strain and temperature monitoring 同时监测应变和温度的双传感导电水凝胶的多协同策略

FlexMat Pub Date : 2026-09-23 Epub Date: 2026-03-17 DOI: 10.1002/flm2.70059

Wei Li, Weidong Xu, Libing Yang, Wanyang Lin, Yu Chen, Lefei Li, Sitong Chen, Chan Zheng, Jianying Huang, Weilong Cai, Yuekun Lai

{"title":"Multi-synergistic strategy for dual-sensing conductive hydrogels capable of simultaneous strain and temperature monitoring","authors":"Wei Li, Weidong Xu, Libing Yang, Wanyang Lin, Yu Chen, Lefei Li, Sitong Chen, Chan Zheng, Jianying Huang, Weilong Cai, Yuekun Lai","doi":"10.1002/flm2.70059","DOIUrl":"https://doi.org/10.1002/flm2.70059","url":null,"abstract":"Conductive hydrogels have exhibited extensive applications in flexible electronics owing to their exceptional flexibility, tailorable mechanical properties, and comprehensive multifunctional features. However, a prevalent limitation in existing research is that the design of many multifunctional hydrogels often relies solely on the combination of different functional materials, without adequate consideration for constructing synergistically interacting relationships among their components. Through the multiple synergistic effects among phytic acid, boric acid, Iron ions (Fe3+), and with the polymer chains, multifunctional integration was achieved. The as-prepared hydrogel exhibites a distinctive three-dimensional network architecture that is inherently associated with both its mechanical and electrical properties. The multifunctional hydrogel shows remarkable integrated performance, with high electrical conductivity (∼9.72 S·m−1), superior water retention, high extensibility (∼1337%), and favorable adhesive properties. When employed as a strain sensor, it exhibits a high gauge factor (GF = 4.93), a fast response time, and a broad linear working range (0%–1300%). When employed as a temperature sensor, the hydrogel exhibited a temperature coefficient of resistance of −1.26%·°C−1. Capitalizing on this thermo-responsive characteristic, a high-fever warning system was successfully constructed that triggers an audible alarm once the body temperature exceeds the preset threshold. Benefiting from these exceptional performance features, the hydrogel exhibits substantial application potential in wearable devices, human motion monitoring, and human body temperature measurement.","PeriodicalId":100533,"journal":{"name":"FlexMat","volume":"3 3","pages":"415-427"},"PeriodicalIF":0.0,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/flm2.70059","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flexibilizing inorganic thermoelectrics 柔性无机热电材料

FlexMat Pub Date : 2026-09-23 Epub Date: 2026-05-16 DOI: 10.1002/flm2.70094

Xiao-Lei Shi, Nan-Hai Li, Meng Li, Zhi-Gang Chen

{"title":"Flexibilizing inorganic thermoelectrics","authors":"Xiao-Lei Shi, Nan-Hai Li, Meng Li, Zhi-Gang Chen","doi":"10.1002/flm2.70094","DOIUrl":"https://doi.org/10.1002/flm2.70094","url":null,"abstract":"This perspective highlights critical advancements in the design and fabrication of flexible inorganic thermoelectric materials and devices, which are central to the development of next-generation energy harvesting and thermal management technologies. By systematically analyzing ductile bulk materials, flexible thin films, and weavable fibers/yarns, the perspective identifies key pathways to overcome the long-standing trade-off between mechanical flexibility and thermoelectric performance. Seminal discoveries discussed include the introduction of warm metalworking for plastic manufacturing of brittle thermoelectric semiconductors, high-throughput screening of plastically deformable van der Waals thermoelectric materials, orientation engineering of high-performance thermoelectric thin films, and sandwich-engineered films that synergize ductility and thermoelectric performance. These insights span multiple length scales from atomic-scale structural modulation to macroscopic device engineering, offering guidance for both fundamental research and practical implementation. Future research directions include AI-assisted material and device design, scalable fabrication of fiber-based textile integration, and the development of robust interfaces and integrated architectures to bridge materials, processing, and systems. The collective strategies reviewed in this work lay the foundation for high-efficiency, durable, and wearable thermoelectric systems, contributing to sustainable energy solutions and smart electronic applications.","PeriodicalId":100533,"journal":{"name":"FlexMat","volume":"3 3","pages":"552-579"},"PeriodicalIF":0.0,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/flm2.70094","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-fullerene acceptor aggregation regulation via additives dipole moment leads to 19.9% power conversion efficiency in bilayer organic solar cells 通过添加剂偶极矩调节非富勒烯受体聚集可使双层有机太阳能电池的功率转换效率达到19.9%

FlexMat Pub Date : 2026-09-23 Epub Date: 2026-03-12 DOI: 10.1002/flm2.70054

Jingjing Zhao, Jiancheng Zhong, Yuanyuan Qin, Chenxi Cao, Lanlan Zhang, Xin Li, Min Zhang, Hongxiang Li, Zhipeng Kan

{"title":"Non-fullerene acceptor aggregation regulation via additives dipole moment leads to 19.9% power conversion efficiency in bilayer organic solar cells","authors":"Jingjing Zhao, Jiancheng Zhong, Yuanyuan Qin, Chenxi Cao, Lanlan Zhang, Xin Li, Min Zhang, Hongxiang Li, Zhipeng Kan","doi":"10.1002/flm2.70054","DOIUrl":"https://doi.org/10.1002/flm2.70054","url":null,"abstract":"The aggregation behavior of the non-fullerene acceptor (NFA) directly influences the carrier dynamics and overall performance in bilayer organic solar cells. However, the typically weak intermolecular interactions in many NFAs limit the formation of well-ordered aggregates, severely restricting efficient charge transport. Herein, we systematically investigate the regulatory mechanism of isomeric halogenated additives on the aggregation behavior of L8-BO acceptors within the PM6/L8-BO system. The results demonstrate that these additives interact with both the end groups and the benzothiadiazole-fused thieno[3,2-b]thiophene (BTP)core of L8-BO, effectively enhancing the degree of ordered aggregation by slowing the thin-film drying kinetics. The performance enhancement is attributed to a synergistic improvement in charge dynamics: the additives promote the molecular ordering of the acceptors, which facilitates efficient charge transport, prolongs carrier lifetime, and effectively suppresses bimolecular recombination. Notably, devices processed with the 2-chloro-1,3-dibromobenzene treatment, which has a dipole moment of 2.56 D, achieved a remarkable power conversion efficiency of 19.9%. Our findings shed light on the critical role of positional isomeric additives in regulating the aggregation behavior of acceptors, offering a design strategy for future additive development in bilayer organic photovoltaics.","PeriodicalId":100533,"journal":{"name":"FlexMat","volume":"3 3","pages":"347-358"},"PeriodicalIF":0.0,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/flm2.70054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermally activated delayed fluorescence exciplex sensitizers with fast reverse intersystem crossing for improving efficiency stability of organic light-emitting diodes based on multi-resonance emitters 热激活延迟荧光激联敏化剂的快速反向系统间交叉提高基于多共振发射体的有机发光二极管的效率稳定性

FlexMat Pub Date : 2026-09-23 Epub Date: 2026-01-09 DOI: 10.1002/flm2.70027

Jingwen Xu, Min Wang, Jinshi Li, Ben Zhong Tang, Zujin Zhao

{"title":"Thermally activated delayed fluorescence exciplex sensitizers with fast reverse intersystem crossing for improving efficiency stability of organic light-emitting diodes based on multi-resonance emitters","authors":"Jingwen Xu, Min Wang, Jinshi Li, Ben Zhong Tang, Zujin Zhao","doi":"10.1002/flm2.70027","DOIUrl":"https://doi.org/10.1002/flm2.70027","url":null,"abstract":"Organic luminescent materials often show novel optical properties that are different from those in the isolated state when forming aggregates, which have attracted increasing attention due to the potential applications in diverse research frontiers. In this work, two planar and rigid polycyclic aromatic hydrocarbons (QOPTZ and QOAD) embedded with carbonyl and sulfone groups are synthesized. They show normal fluorescence in toluene solutions but delayed fluorescence when doped in 3,3′-di-(9H-carbazol-9-yl)-1,1′-biphenyl (mCBP) host. Experimental and theoretical results reveal that the electron-deficient QOPTZ and QOAD can form exciplexes with electron-rich mCBP, and the strong intermolecular donor-acceptor interactions result in orbital degeneracy and narrowed singlet-triplet energy splitting, opening effective reverse intersystem crossing channels for the occurrence of delayed fluorescence. The organic light-emitting diodes (OLEDs) based on the exciplexes achieve high maximum external quantum efficiencies (EQEmaxs) of up to 24.8%. Moreover, efficient green hyperfluorescence OLEDs are fabricated by employing these exciplexes as sensitizers for multi-resonance emitters, realizing the improved EQEmaxs of 32.7% with greatly reduced efficiency roll-offs. These results are conducive to the development of efficient and stable exciplex-based OLEDs.","PeriodicalId":100533,"journal":{"name":"FlexMat","volume":"3 3","pages":"359-367"},"PeriodicalIF":0.0,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/flm2.70027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0