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Random Terpolymer Based on Simple Siloxane-functionalized Thiophene Unit Enabling High-performance Non-fullerene Organic Solar Cells

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Chinese Journal of Polymer Science 2024年第3期42卷 311-321,I0006页

作者： Fuliang cheng Shiting Lai Yihan Zhang Ling Xue xinxin Xia Peipei Zhu Xinhui Lu Xunfan Liao Yiwang chen National Engineering Research Center for Carbohydrate Synthesis/Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education College of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang 330022China Department of Physics Chinese University of Hong Kong New TerritoriesHong Kong 999077China Institute of Polymers and Energy Chemistry(IPEC)/Jiangxi Provincial Key Laboratory of New Energy Chemistry Nanchang UniversityNanchang 330031China

Incorporation of siloxane-functionalized units into polymers backbone has proven to be an efficient strategy to improve photovoltaic performance. In this work, a low-cost siloxane-containing unit was developed to construct a series of terpolymers, and the effects of siloxane on the polymer performance were systematically studied. Different contents of thiophene containing siloxane-functionalized side chain were introduced into PM6 to obtain a series of polymers(PM6, PM6-SiO-10, PM6-SiO-20 and PM6-SiO-30). The siloxane-functionalized side chains in polymers have only a slight effect on the absorption behavior and frontier molecular orbitals. However, when the siloxane content increased, the terpolymers' aggregation property decreased and the temperature-dependency increased, leading to improved donor-acceptor compatibility. The power conversion efficiency(PCE) based on PM6:Y6, PM6-SiO-20:Y6 and PM6-SiO-30:Y6 devices was 15.64%, 16.03% and 15.82%, respectively. In comparison, the active layer based on PM6-SiO-10:Y6 exhibits the most appropriate phase separation morphology, resulting in effective exciton dissociation, more balanced hole-electron transport and less recombination. Consequently, the highest PCE of 16.69% with an outstanding shortcircuit current density of 26.96 mA·cm^(-2) was obtained, which are one of the highest values for siloxane-functionalized polymer-based *** work demonstrates that finely controlling the content of siloxane-functionalized thiophene is beneficial for obtaining high-performance terpolymer donors and provides a novel and low-cost method to improve photovoltaic performance.

关键词： Organic solar cells Terpolymers Siloxane-functionalized unit Low-cost Morphology

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Preparation of single atom catalysts for high sensitive gas sensing

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International Journal of Extreme Manufacturing 2024年第3期6卷 216-248页

作者： xinxin He Ping Guo Xuyang An Yuyang Li Jiatai chen Xingyu Zhang Lifeng Wang Mingjin Dai Chaoliang Tan Jia Zhang Key Laboratory of Microsystems and Microstructure Manufacturing Ministry of EducationHarbin Institute of TechnologyHarbin 150080People’s Republic of China Institute for Frontier Materials Deakin UniversityWaurn Ponds CampusLocked Bag 20000Victoria 3220Australia School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore Department of Electrical and Electronic Engineering The University of Hong KongPokfulam RoadHong Kong Special Administrative Region of China 999077People’s Republic of China Chongqing Research Institute Harbin Institute of TechnologyChongqing 401120People’s Republic of China

Single atom catalysts(SACs)have garnered significant attention in the field of catalysis over the past decade due to their exceptional atom utilization efficiency and distinct physical and chemical *** the semiconductor-based electrical gas sensor,the core is the catalysis process of target gas molecules on the sensitive *** this context,the SACs offer great potential for highly sensitive and selective gas sensing,however,only some of the bubbles come to the *** facilitate practical applications,we present a comprehensive review of the preparation strategies for SACs,with a focus on overcoming the challenges of aggregation and low *** research efforts have been devoted to investigating the gas sensing mechanism,exploring sensitive materials,optimizing device structures,and refining signal post-processing ***,the challenges and future perspectives on the SACs based gas sensing are presented.

关键词： single atom catalysts preparation sensing mechanism gas sensing

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High-performance ultrathin Ag electrodes by chemical bond anchoring Ag atoms for stretchable organic light-emitting devices

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Nano Research 2024年第8期17卷 7614-7620页

作者： Yue Qin Yawei Wang xinxin Wang Yaqi Zhang Jiahao Xu Kanchi Dong Yuehua chen Wenyong Lai Xinwen Zhang State Key Laboratory of Organic Electronics and Information Displays and Institute of Advanced Materials(IAM) Nanjing University of Posts and TelecommunicationsNanjing 210023China

The progress of stretchable organic light-emitting devices(OLEDs)has brought about new possibilities for highly functional wearable ***,the efficiency and durability of stretchable OLEDs have been limited by the performance of stretchable transparent ***,we proposed an interface engineering strategy that involves anchoring the growth of silver(Ag)atoms with amine-enriched biomaterials for high-quality stretchable transparent *** strong interactions between the Ag atom and the amine group enable the uniform Ag electrodes at an ultralow thickness of 7 nm,and provide remarkable mechanical flexibility and strain endurance to the Ag *** distinct effects of different amino acids were investigated,and a deep understanding of their unique contributions to the film formation process was *** resulting ultrathin Ag electrodes exhibit outstanding optoelectrical properties(transmittance of~98% and sheet resistance of~8.7Ω/sq)and excellent stretchability during 500 stretching cycles at 100%*** green phosphorescent OLEDs based on the Ag electrodes have been demonstrated with a current efficiency of up to~70.4 cd/***,the devices show excellent stretching stability,retaining~89% of the original luminance and~78% of the original current efficiency after 200 stretching cycles at 100%*** work opens up new possibilities for stretchable transparent electrodes,fostering advancements in wearable displays and other innovative flexible devices.

关键词： transparent flexible electrodes ultrathin metal film interface mechanical stability

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Selective cyclohexane oxidation enhancement by electronic structures regulation of metal-poly(ionic liquid)s

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Green Chemical Engineering 2024年第2期5卷 213-221页

作者： Ying Jin Shengxin chen Ruirui Wang Yumei Liu xinxin Li Yingwei Li Ruirui Zhang Ruixia Liu Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou450001China Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringInnovation Academy for Green ManufactureCASBeijing100190China

Poly(ionic liquids)(PILs)combined with the macromolecular structure and unique properties of ionic liquids show unlimited potential in *** this work,a series of metal-based PIL with different ionic ratios were prepared for the selective oxidation of *** analysis reveals that different degrees of ionization could adjust the Co-N sites of the catalysts efficiently,leading to significant changes in their electronic structure,which strongly relate to catalytic performance in oxidation.20.07%cyclohexane conversion and 13.06%cyclohexanone and cyclohexanol(KA oil)yield can be achieved by metal-based PILs that are better than other commercial *** with CoCl_(2),metal-based PILs perform well,with superior conversion and KA oil *** interestingly,the catalyst created in this study features a malleable Co-N site,which may potentially have an impact on how oxygen species adsorb and desorb from the ***,the catalyst studied in this work is used as molecular oxygen for the selective oxidation of cyclohexane to produce KA oil,and its application prospect is promising.

关键词： Metal-PILs Cyclohexane oxidation C-H activation Co-N sites

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产教融合背景下应用型本科高校人才培养实施路径——以农科类人才培养为例

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兰州工业学院学报 2024年第1期31卷 131-135页

作者：郑甲成刘婷舒英杰胡能兵艾昊杨雪许峰程昕昕安徽科技学院农学院安徽凤阳233100

随着我国深入推进创新驱动发展战略,创新人才培养模式成为提升地方高校人才培养质量、紧密对接地方区域经济发展的关键手段。从国内外多元化创新人才培养的背景入手,分析应用型高校人才培养的内涵和机制,调研地方高校现阶段农科类人才... 详细信息

随着我国深入推进创新驱动发展战略,创新人才培养模式成为提升地方高校人才培养质量、紧密对接地方区域经济发展的关键手段。从国内外多元化创新人才培养的背景入手,分析应用型高校人才培养的内涵和机制,调研地方高校现阶段农科类人才培养的现状和存在问题,提出产教融合背景下政产学协同创新人才培养的实施路径,旨在促进地方高校人才培养机制变革,强化人才培养质量,提升地方高校服务区域经济发展和国家创新战略的能力,最终实现人才培养、科技研发和服务社会的可持续发展目标。

关键词：产教融合协同育人职业教育创新模式

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Leakage Proof,Flame-Retardant,and Electromagnetic Shield Wood Morphology Genetic Composite Phase Change Materials for Solar Thermal Energy Harvesting

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Nano-Micro Letters 2024年第10期16卷 99-120页

作者： Yuhui chen Yang Meng Jiangyu Zhang Yuhui Xie Hua Guo Mukun He Xuetao Shi Yi Mei xinxin Sheng Delong Xie Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials The International Joint Laboratory for Sustainable Polymers of Yunnan ProvinceThe Higher Educational Key Laboratory for Phosphorus Chemical Engineering of Yunnan ProvinceFaculty of Chemical EngineeringKunming University of Science and TechnologyKunming 650500People's Republic of China Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter School of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006People's Republic of China Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi'anShaanxi 710072People's Republic of China

Phase change materials(PCMs)offer a promising solution to address the challenges posed by intermittency and fluctuations in solar thermal ***,for organic solid-liquid PCMs,issues such as leakage,low thermal conductivity,lack of efficient solar-thermal media,and flamma-bility have constrained their broad ***,we present an innova-tive class of versatile composite phase change materials(CPCMs)developed through a facile and environmentally friendly synthesis approach,leveraging the inherent anisotropy and unidirectional porosity of wood aerogel(nanowood)to support polyethylene glycol(PEG).The wood modification process involves the incorporation of phytic acid(PA)and MXene hybrid structure through an evaporation-induced assembly method,which could impart non-leaking PEG filling while concurrently facilitating thermal conduction,light absorption,and ***,the as-prepared wood-based CPCMs showcase enhanced thermal conductivity(0.82 W m^(-1)K^(-1),about 4.6 times than PEG)as well as high latent heat of 135.5 kJ kg^(-1)(91.5%encapsula-tion)with thermal durability and stability throughout at least 200 heating and cooling cycles,featuring dramatic solar-thermal conversion efficiency up to 98.58%.In addition,with the synergistic effect of phytic acid and MXene,the flame-retardant performance of the CPCMs has been significantly enhanced,showing a self-extinguishing ***,the excellent electromagnetic shielding of 44.45 dB was endowed to the CPCMs,relieving contemporary health hazards associated with electromagnetic ***,we capitalize on the exquisite wood cell structure with unidirectional transport inherent in the development of multifunctional CPCMs,showcasing the operational principle through a proof-of-concept prototype system.

关键词： Wood PCMs MXene Solar thermal storage and conversion Flame-retardant Electromagnetic shielding

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A protocol of field-based phenotyping procedure for no-till wheat root system architecture based on data-driven model-assist

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Artificial Intelligence in Agriculture 2019年第3期3卷 33-41页

作者： xinxin chen Qishuo Ding Ruiyin He Huixin Li College of Engineering Nanjing Agricultural UniversityKey Laboratory of Intelligent Agricultural Equipment of Jiangsu ProvinceNanjing 210031China Soil Ecology Lab College of Resources and Environmental ScienceNanjing Agricultural UniversityNanjing 210095China

Field-based phenotyping(FBP)of crop root systemarchitecture(RSA)provides away to quantify the root growth and distribution in fieldwith a smaller *** on a better understanding of the interrelations between field crop root physiological traits,root developmental phases and environmental changes are hindered due to deficiency of in situ root system architecture testing and quantitative methods for field *** present study aimed to propose a protocol for field-based wheat root system architecture with technical details of key operational *** of RSA traits from root spatial coordinate data acquisition and visualization software presented scaled illustrations of wheat RSA dynamics and root developmental phases which also revealed the root topological heterogeneities,eitherwithin a plant oramong *** of horizontal and vertical soil coverage by root showed that root foraging capability along soil depth was better than within the horizontal *** brief,our data indicated that FBP ofwheat RSA could be achieved using the protocol of datadriven model-assisted phenotyping *** proposed protocol was demonstrated useful for FBP of *** was proved effective to illustrate the topological structures of the wheat root system and to quantify RSAderived parameters,this could be a useful tool for characterizing and analyzing the structural distortion,heterogeneous distribution and the soil space exploration characteristics of wheat root.

关键词： Field-based phenotyping(FPB) Data-driven model-assisted Paddy-wheat root system architecture FBP protocol

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Covalent organic frameworks/carbon nanotubes composite with cobalt(II)pyrimidine sites for bifunctional oxygen electrocatalysis

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Nano Materials Science 2024年第4期6卷 419-427页

作者： Zhuangzhuang Wu Lijuan Feng Zhe Lu xinxin Yu Yuzhen Zhao Junming Luo Shaolei Wang Xinlong Tian Qi chen State Key Laboratory of Marine Resource Utilization in South China Sea School of Marine Science and Engineering Hainan University Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education School of Chemistry Northeast Normal University School of Bioengineering Zhuhai Campus of Zunyi Medical University

With characteristics and advantages of functional composite materials, they are commendably adopted in numerous fields especially in oxygen electrocatalysis, which is due to the significant synergies between various components. Herein, a novel bifunctional oxygen electrocatalyst（Co-CNT@COF-Pyr） has been synthesized through in-situ growth of covalent organic frameworks（COFs） layers on the outer surface of highly conductive carbon nanotubes（CNTs） followed by coordination with Co（II）. For electrocatalytic OER, Co-CNT@COF-Pyr reveals a low overpotential（438 mV） in alkaline electrolyte（1.0 M aqueous solution of KOH） with a current density of 10 mA cm-2, which is comparable to most discovered COF-based catalysts. For electrocatalytic ORR, CoCNT@COF-Pyr exhibits a low H2O2yield range（9.0 %–10.1 %） and a reaction pathway close to 4e-（n =3.82–3.80） in alkaline electrolyte（0.1 M aqueous solution of KOH） within the test potential range of 0.1–0.6 V ***, which is superior to most reported COF-based catalysts. Hence, this research could not only offer an innovative insight into the construction of composites, but also facilitate the practical application of renewable fuel cells, closed water cycle, and rechargeable metal-air batteries.

关键词： Oxygen electrocatalysis Covalent organic frameworks Carbon nanotubes Composite materials

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Efficient epoxidation of propylene over non-noble nickel-based catalyst promoted by alkali metals

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Science China Chemistry 2024年第11期67卷 3697-3705页

作者： Wenqian Li Wanting Li xinxin Cao Longfei chen Yibo Qin Yanfeng Zhu Yanfei Zhang Gai Miao Lingzhao Kong Jiong Li Xinqing chen State Key Laboratory of Low Carbon Catalysis and Carbon Dioxide Utilization CAS Key Laboratory of Low-carbon Conversion Science and Engineering Shanghai Advanced Research Institute Chinese Academy of Sciences University of Chinese Academy of Sciences School of Environmental Science and Engineering Suzhou University of Science and Technology Shanghai Synchrotron Radiation Facility Zhangjiang National Lab Shanghai Advanced Research Institute Chinese Academy of Sciences

The application of non-noble metal catalysts in the catalytic direct gas-phase epoxidation of propylene with H2and O2to produce propylene oxide is valuable and challenging. The introduction of alkali metal promoters is one of the effective methods to improve the catalytic activity of catalysts. Herein, a series of alkali metal（Li, Na, K, Rb, and Cs）-promoted Ni/TS-1 catalysts were prepared to deeply understand the effect of alkali metals on the structure-activity relationship for gas-phase epoxidation of propylene. Among them, the Na-Ni/TS-1 catalyst exhibits the highest catalytic activity(propylene conversion of 7.35% and PO formation rate of 157.9 g h-1kgcat-1) and the best stability（long-term stability exceeding 140 h at 200 °C）. X-ray absorption and photoelectron spectroscopy revealed that the electronic structure of Ni can be tuned by the addition of alkali metal ***3-TPD-MS, CO2-TPD-MS, and C3H6-TPD-MS results indicate that the acidity of the catalyst can also be adjusted by the introduction of alkali metal, whereas the Na-Ni/TS-1 catalyst exhibits the strongest C3H6adsorption capacity. Thus, the suitable acid-base properties, unique electronic properties of Ni species, and the strongest propylene adsorption capacity resulted in improved propylene gas-phase epoxidation activity of Na-Ni/TS-1 catalyst. This study not only provides a new strategy for the practical application of nickel-based catalysts in the gas-phase epoxidation of propylene but also provides insights into the promoting effect of alkali metals.

关键词： propylene epoxidation Ni/TS-1 catalyst alkali metal precipitating agents

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Peguero-Lo-Presti指数诊断的左心室肥厚与阵发性心房颤动射频导管消融术后复发的关系

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天津医药 2024年第2期52卷 210-214页

作者：张明龙方媛媛隋晓鹏陈欣欣李留东王海涛中国人民解放军联勤保障部队第九七〇医院心内科 264010 烟台毓璜顶医院心内科

目的探讨Peguero-Lo-Presti指数诊断的左心室肥厚(LVH)与阵发性心房颤动(房颤)射频消融术后复发的关系。方法选取成功接受射频导管消融的阵发性房颤患者652例。根据Peguero-Lo-Presti指数分为LVH组(167例)和左心室正常(LVN)组(485例)。... 详细信息

目的探讨Peguero-Lo-Presti指数诊断的左心室肥厚(LVH)与阵发性心房颤动(房颤)射频消融术后复发的关系。方法选取成功接受射频导管消融的阵发性房颤患者652例。根据Peguero-Lo-Presti指数分为LVH组(167例)和左心室正常(LVN)组(485例)。收集患者的基线资料,在射频导管消融术后3、6、12个月以及此后每12个月间隔进行规律随访,评估有无房颤复发;采用Kaplan-Meier法绘制2组的房颤复发曲线;Cox比例风险模型评估房颤复发的影响因素。结果中位随访时间为20.5(15.0,26.0)个月,共155例(23.8%)患者出现复发,LVH组95例,LVN组60例,LVH组的无房颤复发率明显低于LVN组(64.1%vs.80.4%,Log-rankχ2=26.361,P<0.01)。校正年龄、性别、体质量指数、高血压、糖尿病、冠心病、心功能不全、左房前后径、左室舒张末期内径和左室射血分数后,Peguero-Lo-Presti指数诊断的LVH仍是房颤复发的危险因素[HR(95%CI):2.359(1.663~3.345),P<0.01]。结论Peguero-Lo-Presti指数诊断的LVH是阵发性房颤患者射频导管消融术后复发的危险因素。

关键词：肥大左心室心房颤动射频消融术复发 Peguero-Lo-Presti指数

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