Chemical Engineering Journal最新文献

{"title":"Integrating robust SEI on recycled micro-sized silicon scrap for stable lithium ion battery","authors":"Haoyu Ma, Baogang Zhao, Zhuobin Han, Mengjia Yu, Kexin Liu, Zhongting Wang, Bingqing Yan, Yinghao Zhou, Xin Feng, Rongrong Jia, Yin Zhao, Zhuyi Wang, Yumei Wang, Li Lu, Shuai Yuan, Liyi Shi, Yingying Lv","doi":"10.1016/j.cej.2025.160149","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160149","url":null,"abstract":"Silicon (Si) based anode materials for lithium ion (Li⁺) batteries have garnered significant attention due to their high specific capacity, low lithium insertion potential, but higher cost than usual graphite anode. The generation of Si scrap from the slicing of photovoltaic Si leads to substantial material scrap. Here, we present a novel technique that an organic molecular encapsulation with elastic polymer silane coupling agent (KH570) crosslinking with trifluoromethyl ethyl methacrylate (TFEMA) on the surface of micrometer-scale photovoltaic Si scrap particles via hydrolysis followed by polymerization. The fluorination termination functional groups would induce a more stable LiF-rich solid electrolyte interface (SEI) during the cycling, which lead to the reduction in Li⁺ and charge transfer resistance. More importantly, the crosslinking network of the elastic polymer, enables micrometer-sized Si scrap maintain the capacity retention of at 5 A/g for 500 cycles (985mAh/g, 5 times than pure Si scrap) and achieves a 90 % retention rate after 100 cycles (131mAh/g) in a full cell system. Furthermore, the Si scraps with such a functional organic coating could be matching with a polymer-based electrolyte as an all-solid battery, which present a specific capacity of 1000mAh/g. This technique of organic molecular encapsulation is straightforward, replicable and holds considerable practical value for the recycling of resources.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"22 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modulation of phase separation and molecular stacking in ternary organic solar cells by introducing a guest polymer with excellent miscibility with host polymer","authors":"Xiaoru Xu, Zongtao Wang, Chao Li, Mengzhen Du, Qing Guo, Erjun Zhou","doi":"10.1016/j.cej.2025.160135","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160135","url":null,"abstract":"Proper miscibility between polymer donor and nonfullerene acceptor (NFA) to form a desired photoactive layer morphology is one of the key prerequisites to achieving efficient organic solar cells (OSCs). The ternary strategy provides a straightforward and effective approach for adjusting the miscibility of different components. For benzo [d][1,2,3] triazole (BTA) −based polymers, their photovoltaic properties largely lag behind those of other classical polymers. We tried different kinds of small molecule receptors as the third component, but the results were not satisfactory, and then focused the selection of the third component on the polymer donor. In this study, we incorporated the wide-band gap polymer PM6 as a guest polymer to the F10-fu:Y18 combination, both of which contain BTA unit. PM6 is preferentially miscible with F10-fu, and the addition of PM6 reduces the miscibility of the donor materials with Y18. This adjustment allows simultaneous optimization of phase separation and molecular stacking, leading to the formation of nanoscale charge transport channels. Consequently, the power conversion efficiency (PCE) of F10-fu:PM6:Y18-based ternary device reached 17.39%, obviously higher than that of F10-fu:Y18-based binary device (16.34%) and PM6:Y18-based binary device (16.23%). These improvements can be attributed to extended light absorption range, cascade energy levels, superior morphology, and favorable charge dynamics. Our study offers guidance for the regulation mechanism of ternary OSCs driven by miscibility based on two donor polymers/ one acceptor molecule system.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"2 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ameliorating lithium deposition regulation via alloying lithiophilic zinc metal for stable lithium metal batteries","authors":"Mengqi Zhu, Xiaoyi Teng, Xuran Li, Chuyi Cai, Chunwen Shi, Jindan Zhang","doi":"10.1016/j.cej.2025.160150","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160150","url":null,"abstract":"Metallic lithium is the ideal anode material for high energy–density batteries. However, their practice applications are still hampered by serious challenges, such as lithium dendrites and fragile solid electrolyte interface. In this work, alloying Zn to CuZn was proved to be a multifunctional promising approach via nucleation exploration and simulated calculation, not only ameliorated the nucleation guidance of lithium of Zn elements in effect and durability but also eliminated the alloying disadvantages between Zn and lithium, leading to long-acting uniform lithium deposition. In addition, CuZn alloy clusters modified carbon matrix (cCuZnMOF) was developed by carbonizing multi-core MOF-74, further improving the performances of lithium anodes. As a result, the prepared cCuZnMOF-Li anode showed a long cycle life of over 1050 h at 0.5 mA cm⁻² and 1 mAh cm⁻², and the assembled cCuZnMOF-Li||LiFePO4 cell revealed a capacity retention of 90 % after 600 cycles at 1C.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"47 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of simultaneously addition of Fe3+ and reed straw biochar on nitrogen removal efficiency and GWP for Anammox","authors":"Jingran Fu, Huan Liao, Zelong Wang, Yaxuan Xiao, Yi Zhang, Guoliang Bai, Jing Zhang, Hongyu Wang, Haijun Lu, Yiqie Dong, Xinghua He","doi":"10.1016/j.cej.2025.160090","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160090","url":null,"abstract":"Anammox is a new type of autotrophic nitrogen removal technology with high efficiency and low consumption. However, the long start-up time and poor running stability of Anammox seriously restrict its large-scale application. In this study, simultaneously addition strategy of Fe³⁺ and reed straw biochar was developed to improve the nitrogen removal performance of Anammox. The nitrogen removal was highest in Anammox system with simultaneously addition of Fe³⁺ and reed straw biochar prepared at 600 °C for 2 h. And continuous addition of Fe³⁺ in the Anammox system with reed straw biochar not only exhibit high nitrogen removal efficiency and excellent resistance to nitrogen shock loading, but also had low global warming potential (GWP). Genus <em>Candidatus Brocadia</em> as dominant AnAOB had the highest relative abundance<!-- --> <!-- -->with the simultaneously addition of Fe³⁺ and reed straw biochar. Besides, enrichment of iron oxidation–reduction microorganisms through enhancing extracellular electron transfer with reed straw biochar achieved the coupling of Anammox, Feammox and NDFO, which was significantly facilitated the nitrogen removal performance of Anammox.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"2 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A breakthrough in dry electrode technology for High-Energy-Density Lithium-Ion batteries with Spray-Dried SWCNT/NCM Composites","authors":"Insung Hwang, Kyung-Eun Sung, Jieun Hong, Gil-Seon Kang, Jihee Yoon","doi":"10.1016/j.cej.2025.160159","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160159","url":null,"abstract":"The performance of lithium-ion batteries is highly dependent on the distribution of conductive additives and the formation of an electrical network within the electrode. In particular, in dry electrode processes, the uniform dispersion of conductive additives is challenging, potentially leading to decreased battery performance. In this study, we successfully synthesized a single-walled carbon nanotubes/LiNi_0.8Co_0.1Mn_0.1O₂(NCM) composite (SW-SPD) by uniformly coating the NCM surface with single-walled carbon nanotubes using a spray-drying process to address this issue. Despite having 10 times less conductive additive compared to carbon black, the SW-SPD electrode exhibited excellent electrical conductivity and electrochemical performance, maintaining a high capacity of 137.39 mAh/g even at a 2C discharge rate. Additionally, at the high areal capacity of the<!-- --> <!-- -->electrode with 7 mAh/cm², the electrode demonstrated significant long-term cycling performance, retaining 89.4 % of its capacity after 100 cycles, and 52.2 % after 500 cycles. SW-SPD offers an innovative solution to the dispersion challenges in dry electrode fabrication processes, presenting significant potential for the development of high-performance batteries.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"18 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Breaking the photoelectrochemical activity-battery voltage trade-off for efficient photocharging of TEMPO/quinone redox flow battery","authors":"Weicheng Zhou, Mingyao Liu, Yuexian Cao, Youming Sun, Qingbo Chang, Xuefei Zhao, Hui Wang, Shengzhong Liu, Jingying Shi, Can Li","doi":"10.1016/j.cej.2025.160162","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160162","url":null,"abstract":"Solar redox flow batteries (SRFBs) have shown a great promise for harvesting and storage of solar energy in simple and stand-alone way. The solar-to-redox conversion efficiency during photocharging is the bottleneck for the overall energy conversion of SRFBs, which is restricted by the photoelectrochemical activity-battery voltage trade-off. By far it remains challenging to unbiasedly photocharge a high voltage (&gt;1.0 V) redox flow battery with a high energy conversion efficiency (&gt;5%) based on a single cost-effective photoelectrode. Herein, we demonstrate a carbon-modified amorphous silicon photoanode to drive a 1.08 V pH-neutral TEMPO/quinone-based flow battery for direct photocharging, which delivers an average solar-to-redox conversion efficiency of 6.8 % under simulated solar irradiation, surpassing previous results for the similar types of SRFBs. Combined with high redox-to-electricity conversion efficiency (81.6 %) and high integrating efficiency between photocharging and dark discharge (97.4 %), the as-fabricated SRFB yields an average overall solar-redox-electricity conversion efficiency of 5.4 %, which is seldom achieved by the previous SRFBs. The carbon overlayer on the amorphous silicon surface is identified to be an efficient cocatalyst for PEC oxidation of TEMPO species during photocharging. This work provides an insight to construct highly efficient SRFBs by boosting the photocharging efficiency.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"10 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling the pyrolysis behavior and co-pyrolysis characteristics of EVA and backsheet in spent crystalline silicon photovoltaic modules","authors":"Jie Wang, Yi Feng, Qing Huang, Yaqun He, Mei Shi","doi":"10.1016/j.cej.2025.160164","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160164","url":null,"abstract":"The recycling of end-of-life crystalline silicon photovoltaic (PV) modules is essential for sustainable solar energy systems. This study investigates the pyrolysis behavior of ethylene–vinyl acetate (EVA) and backsheet materials to clarify their thermal decomposition mechanisms. Results demonstrate that EVA undergoes complete pyrolysis at 500°C, with its organic components entirely decomposed. For Tedlar-Polyester-Tedlar (TPT) backsheets, although their organic components are fully degraded at 500°C, approximately 17 % residue remains, primarily composed of carbon and inorganic fillers such as TiO₂ and CaCO₃. The pyrolysis of EVA follows a sequential bond-cleavage mechanism. In the first stage, the cleavage of C–O and C=O bonds releases acetic acid, followed by the breakdown of C–C bonds to form alkanes in the second stage. For the TPT, degradation begins with the C–H stretching vibrations in polyvinyl fluoride (PVF), potentially releasing HF gas, and is followed by the cleavage of C–H bonds in polyethylene terephthalate (PET), generating terephthalic acid radicals. During pyrolysis, concurrent reactions between PET and PVF may occur, leading to sequential cleavages of C–H, C–F, and OH groups, ultimately forming carbonyl groups. A notable synergistic effect is observed in the co-pyrolysis of EVA and backsheet materials below 465°C, likely due to chemical interactions at elevated temperatures. However, beyond 465°C, the presence of residual backsheet materials alters the chemical environment of the reaction system, resulting in an inhibitory effect. These findings enhance understanding of PV module recycling and potential environmental impacts.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"13 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Amalgamation of electrocoagulation-flotation and membrane technology: Rapid and efficient microalgal biomass recovery and fouling mitigation","authors":"Mohsen Taghavijeloudar, Alireza Khaleghzadeh Ahangar, Rasoul Keshmiri-Naqab, Poone Yaqoubnejad, Hessam Shabanizadeh","doi":"10.1016/j.cej.2025.160131","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160131","url":null,"abstract":"This study presents an innovative microalgae recovery and fouling mitigation technology that combines electrocoagulation-flotation (ECF) and membrane processes to achieve a rapid and efficient microalgae recovery while mitigating fouling. Under the same conditions, applying 1.5 A current significantly improved the average water flux (from 480 to 1455 LMH) and membrane rejection rate (from 93 % to 98 %) compared to the membrane filtration process without ECF. The total fouling resistances also decreased by approximately 67 % (from 0.17 × 10¹⁰ to 0.055 × 10¹⁰ m⁻¹). The molecular dynamic simulation, along with chemical and imaging analyses, revealed that the Al³⁺ ions (37 mg/L) released from the aluminum anode, combined with the bubbles generated from the cathode, effectively coagulated and floated the microalgal biomass on the suspension surface. This process significantly reduced cake formation on the membrane. Furthermore, the fouling model simulations indicated that ECF could change the fouling mechanism, shifting from cake filtration to an intermediate standard model. The findings suggested that integrating ECF with membrane filtration could reduce the operational time from 10 to 3.3 min, which resulted in a significant reduction in energy consumption from 19.71 to 9.14 kWh/kg biomass (approximately to half). This study offers a promising approach for rapid and efficient microalgae harvesting through the membrane filtration process.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"80 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improved kinetic model for methanol synthesis with Cu/ZnO/Al2O3 catalysts based on an extensive state-of-the-art dataset","authors":"T.N. van Schagen, H. Keestra, D.W.F. Brilman","doi":"10.1016/j.cej.2025.159953","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159953","url":null,"abstract":"The present work introduces a new kinetic model for methanol synthesis using a Cu/ZnO/Al&lt;span&gt;&lt;span style=\"\"&gt;&lt;/span&gt;&lt;span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\" /&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"&gt;&lt;svg aria-hidden=\"true\" focusable=\"false\" height=\"1.509ex\" role=\"img\" style=\"vertical-align: -0.582ex;\" viewbox=\"0 -399.4 453.9 649.8\" width=\"1.054ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"&gt;&lt;g is=\"true\"&gt;&lt;g is=\"true\"&gt;&lt;/g&gt;&lt;g is=\"true\" transform=\"translate(0,-150)\"&gt;&lt;g is=\"true\"&gt;&lt;use transform=\"scale(0.707)\" xlink:href=\"#MJMAIN-32\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;/g&gt;&lt;/g&gt;&lt;/g&gt;&lt;/svg&gt;&lt;span role=\"presentation\"&gt;&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;&lt;/span&gt;&lt;script type=\"math/mml\"&gt;&lt;math&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/script&gt;&lt;/span&gt;O&lt;span&gt;&lt;span style=\"\"&gt;&lt;/span&gt;&lt;span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\" /&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"&gt;&lt;svg aria-hidden=\"true\" focusable=\"false\" height=\"1.509ex\" role=\"img\" style=\"vertical-align: -0.582ex;\" viewbox=\"0 -399.4 453.9 649.8\" width=\"1.054ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"&gt;&lt;g is=\"true\"&gt;&lt;g is=\"true\"&gt;&lt;/g&gt;&lt;g is=\"true\" transform=\"translate(0,-150)\"&gt;&lt;g is=\"true\"&gt;&lt;use transform=\"scale(0.707)\" xlink:href=\"#MJMAIN-33\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;/g&gt;&lt;/g&gt;&lt;/g&gt;&lt;/svg&gt;&lt;span role=\"presentation\"&gt;&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;&lt;/span&gt;&lt;script type=\"math/mml\"&gt;&lt;math&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/script&gt;&lt;/span&gt; catalyst, a process important for reducing &lt;span&gt;&lt;span style=\"\"&gt;&lt;/span&gt;&lt;span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;CO&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"&gt;&lt;svg aria-hidden=\"true\" focusable=\"false\" height=\"2.432ex\" role=\"img\" style=\"vertical-align: -0.582ex;\" viewbox=\"0 -796.9 1954.9 1047.3\" width=\"4.54ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g fill=\"c","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"20 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fused nonacyclic carbonyl/nitrogen-containing multi-resonance emitters with simultaneously redshifted and narrowed emission spectra for high-efficiency solution-processed OLEDs","authors":"Aichen Shi, Guimin Zhao, Ronghao Yang, Xiaoyun Liu, Fangfang Huang, Zhicai Chen, Wei Jiang, Yanpei Wang, Xin Ai, Zhihua Ma, Yuanyuan Li, Shiyang Shao","doi":"10.1016/j.cej.2025.160102","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160102","url":null,"abstract":"Multiple resonance (MR) emitters are attractive candidates for ultra-high-definition displays due to their narrowband emissions and high luminescent efficiency. However, it has been challenging to develop MR emitters with elongated emission wavelengths because they often encounter broadened emissive spectra. Here we report two nonacyclic carbonyl/nitrogen (C<img alt=\"double bond\" src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/dbnd.gif\" style=\"vertical-align:middle\"/>O/N)-containing MR emitters (<strong>NCON-TB</strong> and <strong>NCON-Mes</strong>) by fusing two pentacyclic indolo[3,2,1<em>-de</em>]acridinone skeletons through phenyl segment bridging the carbonyl and nitrogen atom. Compared to parent pentacyclic counterpart, the fused nonacyclic emitters not only exhibit largely red-shifted emissions (by ∼90 nm) owing to enhanced short-range charge transfer, but also reveal much narrowed emission spectra by reducing stretching vibrations of molecular skeleton and C<img alt=\"double bond\" src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/dbnd.gif\" style=\"vertical-align:middle\"/>O bonds, giving pure green emissions peaked at 520 ∼ 521 nm with full width at half-maximum of 28 nm/0.13 eV and high photoluminescence quantum yield up to 94 %. Solution-processed organic light-emitting diodes (OLEDs) employing <strong>NCON-Mes</strong> bearing four peripheral mesitylene substituents as emitter exhibit narrowband electroluminescence at 524 nm with maximum external quantum efficiency of 27.7 %, representing the best device efficiency for solution-processed OLEDs based on C<img alt=\"double bond\" src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/dbnd.gif\" style=\"vertical-align:middle\"/>O/N-containing MR emitters so far.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"131 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143072873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}