Aggregate (Hoboken, N.J.)最新文献_第9页

Fire-retardant and high-strength polymeric materials enabled by supramolecular aggregates 超分子聚合体带来的阻燃和高强度聚合物材料

Aggregate (Hoboken, N.J.) Pub Date : 2024-01-04 DOI: 10.1002/agt2.494

Lei Liu, Menghe Zhu, Jiabing Feng, Hong Peng, Yongqian Shi, Jiefeng Gao, Long-Cheng Tang, Pingan Song

{"title":"Fire-retardant and high-strength polymeric materials enabled by supramolecular aggregates","authors":"Lei Liu, Menghe Zhu, Jiabing Feng, Hong Peng, Yongqian Shi, Jiefeng Gao, Long-Cheng Tang, Pingan Song","doi":"10.1002/agt2.494","DOIUrl":"10.1002/agt2.494","url":null,"abstract":"High-performance polymers have proliferated in modern society across a variety of industries because of their low density, good chemical stability, and superior mechanical properties. However, while polymers are widely applied, frequent fire disasters induced by their intrinsic flammability have caused massive impacts on human beings, the economy, and the environment. Supramolecular chemistry has recently been intensively researched to provide fire retardancy for polymers via the physical barrier and char-catalyzing effects of supramolecular aggregates. In parallel, the noncovalent interactions between supramolecular and polymer chains, such as hydrogen bonding, π–π interactions, metal–ligand coordination, and synergistic interactions, can endow the matrix with enhanced mechanical strength. This makes it possible to integrate physical–chemical properties and noncovalent interactions into one supramolecular aggregate-based high-performance polymeric system on demand. However, fulfilling these promises needs more research. Here, we provide an overview of the latest research advances of fire-retardant and high-strength polymer materials based on supramolecular structures and interactions of aggregates. This work reviews their conceptual design, characterization, modification principles, performances, applications, and mechanisms. Finally, development challenges and perspectives on future research are also discussed.","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.494","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139096245","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

Organic molecules with dual triplet-harvesting channels enable efficient X-ray scintillation and imaging 具有双三重收集通道的有机分子可实现高效 X 射线闪烁和成像

Aggregate (Hoboken, N.J.) Pub Date : 2024-01-04 DOI: 10.1002/agt2.485

Lisi Zhan, Yalun Xu, Tianhao Chen, Yang Tang, Cheng Zhong, Qianqian Lin, Chuluo Yang, Shaolong Gong

{"title":"Organic molecules with dual triplet-harvesting channels enable efficient X-ray scintillation and imaging","authors":"Lisi Zhan, Yalun Xu, Tianhao Chen, Yang Tang, Cheng Zhong, Qianqian Lin, Chuluo Yang, Shaolong Gong","doi":"10.1002/agt2.485","DOIUrl":"10.1002/agt2.485","url":null,"abstract":"Organic scintillators have recently gained considerable attentions in X-ray detection for their potential applications in biomedical radiograph and security inspection. However, the weak X-ray absorption and/or inefficient exciton utilization have limited the development and commercialization of organic scintillators. Currently, high-performance X-ray organic scintillators are scarce and organic scintillators with dual triplet-harvesting channels have not been explored before. Here, we develop several proof-of-concept sulfone-based organic molecules, C1–C7, using different alkoxy chains to manipulate molecular packing mode. These materials exhibit dual triplet-harvesting channels of thermally activated delayed fluorescence (TADF) and room-temperature phosphorescence (RTP) in aggregated state. Inspiringly, these molecules display distinct radioluminescence under the X-ray stimulation. Among them, C6 behaves the highest light yield of 16,558 photons MeV−1. Moreover, clear X-ray images are demonstrated in both aggregated state and single-molecule level. High spatial resolutions of 15.0 and 10.6 line pairs per millimeter (lp mm−1) are achieved for rigid and flexible scintillator screens, exceeding most reported organic and conventional inorganic scintillators. These results highlight the great potential of organic molecules with TADF and RTP nature for efficient X-ray scintillation and imaging.","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.485","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139105442","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

Twins-like nanodrugs synchronously transport in blood and coalesce inside tumors for sensitive ultrasound imaging and triggerable penetrative drug delivery 类似双胞胎的纳米药物可在血液中同步传输，并在肿瘤内凝聚，从而实现灵敏的超声波成像和可触发的穿透性给药

Aggregate (Hoboken, N.J.) Pub Date : 2024-01-04 DOI: 10.1002/agt2.476

Yujun Cai, Gengjia Chen, Minzhao Lin, Bo Li, Huihai Zhong, Tan Li, Zecong Xiao, Yong Wang, Xintao Shuai

{"title":"Twins-like nanodrugs synchronously transport in blood and coalesce inside tumors for sensitive ultrasound imaging and triggerable penetrative drug delivery","authors":"Yujun Cai, Gengjia Chen, Minzhao Lin, Bo Li, Huihai Zhong, Tan Li, Zecong Xiao, Yong Wang, Xintao Shuai","doi":"10.1002/agt2.476","DOIUrl":"10.1002/agt2.476","url":null,"abstract":"Nanodrugs capable of aggregating in the tumor microenvironment (TME) have demonstrated great efficiency in improving the therapeutic outcome. Among various approaches, the strategy utilizing electrostatic interaction as a driving force to achieve intratumor aggregation of nanodrugs has attracted great attention. However, the great difference between the two nanodrugs with varied physicochemical properties makes their synchronous transport in blood circulation and equal-opportunity tumor uptake impossible, which significantly detracts from the beneficial effects of nanodrug aggregation inside tumors. We herein propose a new strategy to construct a pair of extremely similar nanodrugs, referred to as “twins-like nanodrugs (TLNs)”, which have identical physicochemical properties including the same morphology, size, and electroneutrality to render them the same blood circulation time and tumor entrance. The 1:1 mixture of TLNs (TLNs-Mix) intravenously injected into a mouse model efficiently accumulates in tumor sites and then transfers to oppositely charged nanodrugs for electrostatic interaction-driven coalescence via responding to matrix metalloproteinase-2 (MMP-2) enriched in tumor. In addition to enhanced tumor retention, the thus-formed micron-sized aggregates show high echo intensity essential for ultrasound imaging as well as ultrasound-triggered penetrative drug delivery. Owing to their distinctive features, the TLNs-Mix carrying sonosensitizer, immune adjuvant, and ultrasound contrast agent exert potent sonodynamic immunotherapy against hypovascular hepatoma, demonstrating their great potential in treating solid malignancies.","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.476","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139096179","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

An artificial chaperone serves a dual role in regulating the assembly of peptides through phase separation 人工伴侣在通过相分离调节多肽组装方面发挥双重作用

Aggregate (Hoboken, N.J.) Pub Date : 2024-01-04 DOI: 10.1002/agt2.496

Wang Li, Yang Zhou, Sheng He, Tianyi Tong, Congsen Wang, Peichen Shi, Suixu Li, Xinchang Wang, Liulin Yang, Xiaoyu Cao, Zhong-Qun Tian

{"title":"An artificial chaperone serves a dual role in regulating the assembly of peptides through phase separation","authors":"Wang Li, Yang Zhou, Sheng He, Tianyi Tong, Congsen Wang, Peichen Shi, Suixu Li, Xinchang Wang, Liulin Yang, Xiaoyu Cao, Zhong-Qun Tian","doi":"10.1002/agt2.496","DOIUrl":"10.1002/agt2.496","url":null,"abstract":"In biological systems, molecular assembly primarily relies on the assistance of molecular chaperones. Inspired by nature, strategies like ‘chaperone-assisted assembly’ and ‘catalyzed assembly’ have been proposed for the sophisticated control of molecular assembly. Nonetheless, significant challenges remain in the rational design of such systems, calling for a deep understanding of underlying principles. Herein, we demonstrate an artificial chaperone serves a dual role, that is catalyst in low dosages and inhibitor in high dosages, in regulating the supramolecular polymerization of peptides. Low dosages of carboxymethyl cellulose, as the chaperones, catalyze the assembly of Aβ16-22 peptides into fibrils through multi-step phase separation, while high dosages trap the peptides into coacervate intermediates and therefore inhibit the fibrillation. Consequently, the quantity of chaperones does not follow the intuition that ‘more is better’ for catalyzing assembly but instead has an optimal molar ratio. Investigation reveals that the interplay and evolution of electrostatic and hydrophobic interactions are the keys to achieving these processes. This study provides insights into the multifaceted roles artificial chaperones may play in a dosage-dependent manner and enriches the toolkit for efficient and controllable construction of complex assembly systems.","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.496","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139103321","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

Low-temperature-curable and photo-patternable benzocyclobutene-derived aggregation-induced emission-active polymer dielectrics 低温固化和光图案化苯并环丁烯聚合诱导发射活性聚合物电介质

Aggregate (Hoboken, N.J.) Pub Date : 2024-01-04 DOI: 10.1002/agt2.487

Ziwei Yuan, Meng Xie, Jianlei Qian, Wenjie Fan, Menglu Li, Liao Guo, Yan Sun, Wenxin Fu

{"title":"Low-temperature-curable and photo-patternable benzocyclobutene-derived aggregation-induced emission-active polymer dielectrics","authors":"Ziwei Yuan, Meng Xie, Jianlei Qian, Wenjie Fan, Menglu Li, Liao Guo, Yan Sun, Wenxin Fu","doi":"10.1002/agt2.487","DOIUrl":"10.1002/agt2.487","url":null,"abstract":"The high curing temperatures required for traditional benzocyclobutene (BCB) materials have posed limitations on their applicability in high-temperature-sensitive fields. To address this challenge, our work focuses on the synthesis of a novel tetraphenylethylene (TPE)-functionalized BCB monomer, TPE–BCB, achieved through the introduction of an ether bond onto the BCB's four-membered ring via Williamson reaction. TPE–BCB demonstrates remarkable low-temperature curing properties, characterized by a ring-opening peak temperature of 190°C, representing a reduction of 60°C compared to conventional BCBs. Fully cured TPE–BCB resins exhibit exceptional dielectric and mechanical properties, coupled with minimal water absorption. Additionally, the incorporation of TPE with aggregation-induced emission characteristics enhances the resins’ luminescence and photolithographic capabilities. Notably, our TPE–BCB resins achieve impressive photolithography performance with a resolution ratio of up to 10 μm. In contrast to conventional BCB-functionalized resins, TPE–BCB offers the dual advantage of low-temperature curing and luminescence. This development marks a significant step in the advancement of low-temperature curing BCB materials and serves as a pioneering example in the realm of multilayer wafer bonding materials.","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.487","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139096220","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

Machine learning-enabled optimization of melt electro-writing three-dimensional printing 通过机器学习优化熔融电写三维印刷

Aggregate (Hoboken, N.J.) Pub Date : 2024-01-04 DOI: 10.1002/agt2.495

Ahmed Choukri Abdullah, Olgac Ozarslan, Sara Soltanabadi Farshi, Sajjad Rahmani Dabbagh, Savas Tasoglu

{"title":"Machine learning-enabled optimization of melt electro-writing three-dimensional printing","authors":"Ahmed Choukri Abdullah, Olgac Ozarslan, Sara Soltanabadi Farshi, Sajjad Rahmani Dabbagh, Savas Tasoglu","doi":"10.1002/agt2.495","DOIUrl":"10.1002/agt2.495","url":null,"abstract":"Melt electrowriting (MEW) is a solvent-free (i.e., no volatile chemicals), a high-resolution three-dimensional (3D) printing method that enables the fabrication of semi-flexible structures with rigid polymers. Despite its advantages, the MEW process is sensitive to changes in printing parameters (e.g., voltage, printing pressure, and temperature), which can cause fluid column breakage, jet lag, and/or fiber pulsing, ultimately deteriorating the resolution and printing quality. In spite of the commonly used error-and-trial method to determine the most suitable parameters, here, we present a machine learning (ML)-enabled image analysis-based method for determining the optimum MEW printing parameters through an easy-to-use graphical user interface (GUI). We trained five different ML algorithms using 168 MEW 3D print samples, among which the Gaussian process regression ML model yielded 93% accuracy of the variability in the dependent variable, 0.12329 on root mean square error for the validation set and 0.015201 mean square error in predicting line thickness. Integration of ML with a control feedback loop and MEW can reduce the error-and-trial steps prior to the 3D printing process, decreasing the printing time (i.e., increasing the overall throughput of MEW) and material waste (i.e., improving the cost-effectiveness of MEW). Moreover, embedding a trained ML model with the feedback control system in a GUI facilitates a more straightforward use of ML-based optimization techniques in the industrial section (i.e., for users with no ML skills).","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.495","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139103251","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

The dynamics of PEG-coated nanoparticles in concentrated protein solutions up to the molecular crowding range PEG 涂层纳米粒子在浓缩蛋白质溶液中的动态变化，直至分子拥挤范围

Aggregate (Hoboken, N.J.) Pub Date : 2024-01-04 DOI: 10.1002/agt2.483

Ferdinand Otto, Francesco Dallari, Fabian Westermeier, D. C. Florian Wieland, Wolfgang J. Parak, Felix Lehmkühler, Florian Schulz

{"title":"The dynamics of PEG-coated nanoparticles in concentrated protein solutions up to the molecular crowding range","authors":"Ferdinand Otto, Francesco Dallari, Fabian Westermeier, D. C. Florian Wieland, Wolfgang J. Parak, Felix Lehmkühler, Florian Schulz","doi":"10.1002/agt2.483","DOIUrl":"10.1002/agt2.483","url":null,"abstract":"Polymer-coated nanoparticles are widely studied in the context of nanomedicine and it is therefore of utmost importance to understand not only how their structure but also how their colloidal dynamics are affected by physiologically relevant conditions. A characteristic feature of the cytosol of cells is the very high concentration of proteins among other matrix components, often termed macromolecular crowding. Here, the structure and colloidal dynamics of poly(ethylene glycol) (PEG)-coated gold nanoparticles in the presence of bovine serum albumin (BSA) concentrations ranging from 0 to 265 mg/mL are studied with X-ray photon correlation spectroscopy. For protein–nanoparticle mixtures with high BSA concentrations, comparable to intracellular levels, a significant deviation of the apparent viscosity from expectations for pure BSA solutions is found. The findings strongly indicate that the nanoscopic viscous properties of the dense protein solutions are significantly affected by the nanoparticles. At these high concentrations, the colloidal stability of the samples depends on the molecular weight of the coating PEG–ligand, whereas at lower concentrations no differences are observed.","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.483","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139103316","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

Organoids in concert: engineering in vitro models toward enhanced fidelity 器官组织协同工作：体外工程模型的保真度不断提高

Aggregate (Hoboken, N.J.) Pub Date : 2024-01-04 DOI: 10.1002/agt2.478

Zhengkun Chen, Ryohichi Sugimura, Yu Shrike Zhang, Changshun Ruan, Chunyi Wen

{"title":"Organoids in concert: engineering in vitro models toward enhanced fidelity","authors":"Zhengkun Chen, Ryohichi Sugimura, Yu Shrike Zhang, Changshun Ruan, Chunyi Wen","doi":"10.1002/agt2.478","DOIUrl":"10.1002/agt2.478","url":null,"abstract":"Organoids have emerged as a powerful platform for studying complex biological processes and diseases in vitro. However, most studies have focused on individual organoids, overlooking the inter-organ interactions in vivo and limiting the physiological relevance of the models. To address this limitation, the development of a multi-organoid system has gained considerable attention. This system aims to recapitulate inter-organ communication and enable the study of complex physiological processes. This review provides a comprehensive overview of the recent advancements in organoid engineering and the emerging strategies for constructing a multi-organoid system. First, we highlight the critical mechanical, structural, and biochemical factors involved in designing suitable materials for the growth of different organoids. Additionally, we discuss the incorporation of dynamic culture environments to enhance organoid culture and enable inter-organoid communication. Furthermore, we explore techniques for manipulating organoid morphogenesis and spatial positioning of organoids to establish effective inter-organoid communication networks. We summarize the achievements in utilizing organoids to recapitulate inter-organ communication in vitro, including assembloids and microfluidic multi-organoid platforms. Lastly, we discuss the existing challenges and opportunities in developing a multi-organoid system from its technical bottlenecks in scalability to its applications toward complex human diseases.","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.478","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139095960","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

Matthew effect: General design strategy of ultra-fluorogenic nanoprobes with amplified dark–bright states in aggregates 马修效应聚合体中具有放大暗-亮状态的超荧光纳米探针的总体设计策略

Aggregate (Hoboken, N.J.) Pub Date : 2024-01-04 DOI: 10.1002/agt2.499

Shinsuke Segawa, Xinwen Ou, Tianruo Shen, Tomohiro Ryu, Yuki Ishii, Herman H. Y. Sung, Ian D. Williams, Ryan T. K. Kwok, Ken Onda, Kiyoshi Miyata, Xuewen He, Xiaogang Liu, Ben Zhong Tang

{"title":"Matthew effect: General design strategy of ultra-fluorogenic nanoprobes with amplified dark–bright states in aggregates","authors":"Shinsuke Segawa, Xinwen Ou, Tianruo Shen, Tomohiro Ryu, Yuki Ishii, Herman H. Y. Sung, Ian D. Williams, Ryan T. K. Kwok, Ken Onda, Kiyoshi Miyata, Xuewen He, Xiaogang Liu, Ben Zhong Tang","doi":"10.1002/agt2.499","DOIUrl":"10.1002/agt2.499","url":null,"abstract":"Fluorescence imaging, a key technique in biological research, frequently utilizes fluorogenic probes for precise imaging in living systems. Tetrazine is an effective emission quencher in fluorogenic probe designs, which can be selectively damaged upon bioorthogonal click reactions, leading to considerable emission enhancement. Despite significant efforts to increase the emission enhancement ratio (IAC/IBC) of tetrazine-functionalized fluorogenic probes, the influence of molecular aggregation on the emission properties has been largely overlooked in these probe designs. In this study, we reveal that an ultrahigh IAC/IBC can be realized in the aggregate system when tetrazine is paired with aggregation-induced emission (AIE) luminogens. Tetrazine amplifies its quenching efficiency upon aggregation and drastically reduce background emissions. Subsequent click reactions damage tetrazine and trigger significant AIE, leading to considerably enhanced IAC/IBC. We further showcase the capability of these ultra-fluorogenic systems in selective imaging of multiple organelles in living cells. We term this unique fluorogenicity of AIE luminogen-quencher complexes with amplified dark-bright states as “Matthew effect” in aggregate emission, potentially providing a universal approach to attain ultrahigh IAC/IBC in diverse fluorogenic systems.","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.499","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139096200","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

A–D–A'–D–A type nonfused ring electron acceptors for efficient organic solar cells via synergistic molecular packing and orientation control 通过协同分子填料和取向控制实现高效有机太阳能电池的 A-D-A'-D-A 型非融合环电子受体

Aggregate (Hoboken, N.J.) Pub Date : 2024-01-04 DOI: 10.1002/agt2.488

Wenkui Wei, Xia Zhou, Shuting Pang, Jiadong Zhou, Xiyue Yuan, Junyu Li, Yuting Chen, Langheng Pan, Zengqi Xie, Hongbin Wu, Fei Huang, Yong Cao, Chunhui Duan

{"title":"A–D–A'–D–A type nonfused ring electron acceptors for efficient organic solar cells via synergistic molecular packing and orientation control","authors":"Wenkui Wei, Xia Zhou, Shuting Pang, Jiadong Zhou, Xiyue Yuan, Junyu Li, Yuting Chen, Langheng Pan, Zengqi Xie, Hongbin Wu, Fei Huang, Yong Cao, Chunhui Duan","doi":"10.1002/agt2.488","DOIUrl":"10.1002/agt2.488","url":null,"abstract":"Nonfused ring electron acceptors (NFREAs) are promising candidates for future commercialization of organic solar cells (OSCs) due to their simple synthesis. Still, the power conversion efficiencies (PCEs) of NFREA-based OSCs have large room for improvement. In this work, by merging end group halogenation and side chain engineering, we developed four A–D–A'–D–A type NFREAs, which we refer to as EH-4F, C4-4F, EH-4Cl, and C4-4Cl. Single crystal X-ray diffraction revealed that multiple intermolecular S···F interactions between cyclopentadithiophene and 5,6-difluoro-3-(dicyanomethylene)indanone could cause an unfavorable dimer formation, leading to ineffective π–π stackings in EH-4F and C4-4F, whereas no such dimer was found in EH-4Cl and C4-4Cl after replacing with 5,6-dichloro-3-(dicyanomethylene)indanone. Moreover, although the shorter n-butyl side chain resulted in a closer molecular packing in C4-4Cl, EH-4Cl (2-ethylhexyl substitution) with proper crystallinity exhibited enhanced face-on orientation in thin film, which is favorable for vertical charge transport and further reducing charge recombination. As a result, a PCE of 13.0% is obtained for EH-4Cl-based OSC with a fill factor of 0.70. This work highlights the importance of molecular packing and orientation control toward future high-performance A–D–A'–D–A type NFREAs.","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.488","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139376737","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