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Enhancing efficiency and stability of organic solar cells through a simplified four-step synthesis of fully non-fused ring electron acceptor

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Journal of Energy Chemistry 2024年第6期93卷 601-608,I0015页

作者： chenyang han Huanhuan Gao Yanna Sun Yuanyuan Kan Zhaozhao Bi Wei Ma Yani Zhang Juan Antonio Zapien Yingguo Yang Ke Gao College of New Energy Xi’an Shiyou UniversityXi’an 710065ShaanxiChina Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Institute of Frontier ChemistrySchool of Chemistry and Chemical EngineeringShandong UniversityQingdao 266237ShandongChina State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina Department of Materials Science and Engineering City University of Hong KongKowloonHong Kong 99907China School of Microelectronics Fudan UniversityShanghai 200433China

Design and synthesis of superior cost-effective non-fullerene acceptors(NFAs)are still big challenges for facilitating the commercialization of organic solar cells(OSCs),yet to be ***,two medium bandgap fully non-fused ring electron acceptors(NFREAs,medium bandgap,i,e.,1,3-1,8 eV),namely PTR-2Cl and PTR-4Cl are synthesized with only four steps by using intramolecular noncovalent interaction central core,structured alkyl side chain orientation linking units and flanking with different electron-withdrawing end *** them,PTR-4C1 exhibits increased average electrostatic potential(ESP)difference with polymer donor,enhanced crystallinity and compactπ-πstacking compared with the control molecule *** a result,the PTR-4Cl-based OSC achieved an impressive power conversion efficiency(PCE)of 14.72%,with a much higher open-circuit voltage(V_(OC))of 0.953 V and significantly improved fill factor(FF)of 0.758,demonstrating one of the best acceptor material in the top-performing fully NFREA-based OSCs with both high PCE and V_(OC).Notably,PTR-4Cl-based cells maintain a good T_80lifetime of its initial PCE after over 936 h under a continuous thermal annealing treatment and over1300 h T_(80)lifetime without *** work provides a cost-effective design strategy for NFREAs on obtaining high V_(OC),efficient exciton dissociation,and ordered molecular packing and thus high-efficiency and stable OSCs.

关键词： Organic solar cells Fully non-fused ring acceptors End group engineering Morphology regulation High efficiency

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On the evolutionary trail of MagRs

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Zoological Research 2024年第4期45卷 821-830页

作者： Jing Zhang Yafei Chang Peng Zhang Yanqi Zhang Mengke Wei chenyang han Shun Wang Hui-Meng Lu Tiantian Cai Can Xie High Magnetic Field Laboratory Hefei Institutes of Physical ScienceChinese Academy of SciencesScience IslandHefeiAnhui 230031China Science Island Branch of Graduate School University of Science and Technology of ChinaHefeiAnhui 230036China Institutes of Physical Science and Information Technology Anhui UniversityHefeiAnhui 230039China School of Life Sciences Key Laboratory for Space Bioscience and BiotechnologyNorthwestern Polytechnical UniversityXi’anShaanxi 710072China Institute of Quantum Sensing Zhejiang UniversityHangzhouZhejiang 310027China

Magnetic sense,or termed magnetoreception,has evolved in a broad range of taxa within the animal kingdom to facilitate orientation and ***,highly conserved A-type iron-sulfur proteins,are widely distributed across all phyla and play essential roles in both magnetoreception and iron-sulfur cluster ***,the evolutionary origins and functional diversification of MagRs from their prokaryotic ancestor remain *** this study,MagR sequences from 131 species,ranging from bacteria to humans,were selected for analysis,with 23 representative sequences covering species from prokaryotes to Mollusca,Arthropoda,Osteichthyes,Reptilia,Aves,and mammals chosen for protein expression and *** studies revealed a gradual increase in total iron content in MagRs during *** types of MagRs were identified,each with distinct iron and/or iron-sulfur cluster binding capacity and protein stability,indicating continuous expansion of the functional roles of MagRs during speciation and *** evolutionary biochemical study provides valuable insights into how evolution shapes the physical and chemical properties of biological molecules such as MagRs and how these properties influence the evolutionary trajectories of MagRs.

关键词： Magnetoreception Magnetoreceptor(MagR) Iron-sulfur cluster Stability Evolutionary biochemistry

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催化裂化装置富气压缩机干气密封优化改造

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化工设计通讯 2024年第2期50卷 55-57页

作者：席欢欢韩晨阳冯蕾博陕西延长石油(集团)有限责任公司延安炼油厂联合一车间陕西延安727406

陕西延长石油(集团)延安炼油厂100万t/a催化裂化装置富气压缩机所采用的串联式干气密封系统在运行过程中故障率高,不能适应设备运行要求,通过将串联式改造为双端面式型干气密封,提高干气密封效果,提高了设备运行可靠率。

关键词：串联式干气密封双端面式干气密封故障分析密封泄漏

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催化裂化装置富气压缩机级间冷却器改造

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化工设计通讯 2024年第1期50卷 25-27页

作者：席欢欢韩晨阳冯蕾博陕西延长石油(集团)有限责任公司延安炼油厂陕西延安727406

陕西延长石油(集团)有限公司延安炼油厂100万t/a催化裂化装置富气压缩机级间冷却器管束泄漏频繁,使用周期较短,影响装置长周期运行。通过对管束泄漏原因进行分析,制定改进措施,对级间冷却器进行改造,改造后使用效果明显,满足了装置长周... 详细信息

陕西延长石油(集团)有限公司延安炼油厂100万t/a催化裂化装置富气压缩机级间冷却器管束泄漏频繁,使用周期较短,影响装置长周期运行。通过对管束泄漏原因进行分析,制定改进措施,对级间冷却器进行改造,改造后使用效果明显,满足了装置长周期运行需求。

关键词：级间冷却器管束内漏改造

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硫黄回收装置工艺气鼓风机的改造与应用

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化工设计通讯 2024年第1期50卷 133-135页

作者：韩晨阳席欢欢冯蕾博陕西延长石油(集团)有限责任公司延安炼油厂陕西延安727406

从延安炼油厂16 t/d硫黄回收装置原工艺气鼓风机的现场实际运行情况出发,为保障环保装置安全平稳运行,结合目前生产工艺及设备管理要求,分析了单级高速离心式鼓风机在硫黄回收装置生产过程中存在的不足,对原单级高速离心式鼓风机进行改... 详细信息

从延安炼油厂16 t/d硫黄回收装置原工艺气鼓风机的现场实际运行情况出发,为保障环保装置安全平稳运行,结合目前生产工艺及设备管理要求,分析了单级高速离心式鼓风机在硫黄回收装置生产过程中存在的不足,对原单级高速离心式鼓风机进行改造,并对改造后的多级离心式鼓风机的使用效果进行了简述,为该鼓风机在同类型装置上的应用提供借鉴。

关键词：高速离心鼓风机能耗多级离心鼓风机环保

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Comparative genomic analysis of N6-methyladenosine regulators in nine rosaceae species and functional characterization in response to drought stress in pear

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Horticultural Plant Journal 2023年第4期9卷 693-704页

作者： chenyang han Huizhen Dong Qinghai Qiao Yuqin Dai Xiaosan Huang Shaoling Zhang College of Horticulture State Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingJiangsu 210095China

N 6-methylated adenine(m6 A)is an emerging epigenetic marker in eukaryotic organisms that plays an important role in biological functions and in enriching genetic information.m6 A exerts these functions via the dynamic interplay among m6 A writers,erasers,and ***,little is known about the underlying mechanisms of m6 A in plant growth and stress ***,we identified 276 masked m6 A regulators from nine Rosaceae species(Pyrus bretschneideri,Pyrus betulifolia,Pyrus communis,Malus domestica,Fragaria vesca,Prunus avium,Prunus mume,Prunus persica,and Rubus occidentalis).We classified and named these genes in more detail based on phylogenetic and synteny *** expansion of m6 A regulators in Maloideae was dated back to the recent whole-genome duplication(WGD)in *** on the expression pattern analysis and gene structure analysis of m6 A regulators,m6 A was shown to be a significant factor in regulating plant development and *** addition,PbrMTA1-silenced pear plants displayed significantly reduced drought tolerance and chlorophyll content,as well as increased electrolyte leakage and concentrations of malondialdehyde and H2 O2.

关键词： Pyrus bretschneideri RNA methylation m6A regulators Rosaceae Evolution Transcriptome Drought stress VIGS

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Synergistic effect of F and triggered oxygen vacancies over F-TiO_(2) on enhancing NO ozonation

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Journal of Environmental Sciences 2023年第3期125卷 319-331页

作者： Lina Guo Xu Zhang Fanyu Meng Jing Yuan Yiqing Zeng chenyang han Yong Jia Mingyan Gu Shule Zhang Qin Zhong Key Laboratory of Metallurgical Emission Reduction and Resources Recycling(Anhui University of Technology) Ministry of EducationMa’anshan 243002China School of Chemical Engineering Nanjing University of Science and TechnologyNanjing 210094China Donadeo Innovation Centre of Engineering University of AlbertaEdmonton T6G 1H9Canada

Oxidation-absorption technology is a key step for NOxremoval from low-temperature *** the condition of low O_(3)concentration(O_(3)/NO molar ratio = 0.6), F-TiO_(2)(F-TiO_(2)), which is cheap and environmentally friendly, has been prepared as ozonation catalysts for NO oxidation. Catalytic activity tests performed at 120℃showed that the NO oxidation efficiency of F-TiO_(2)samples was higher than that of TiO_(2)(about 43.7%), and the NO oxidation efficiency of F-TiO_(2)-0.15 was the highest, which was 65.3%. Combined with physicochemical characteristics of catalysts and the analysis of active species, it was found that there was a synergistic effect between F sites and oxygen vacancies on F-TiO_(2), which could accelerate the transformation of monomolecular O_(3)into multi-molecule singlet oxygen(1O_(2)), thus promoting the selective oxidation of NO to NO_(2). The oxidation reaction of NO on F-TiO_(2)-0.15 follows the Eley-Rideal mechanism, that is, gaseous NO reacts with adsorbed O_(3)and finally form NO_(2).

关键词： Nitrogen oxides Catalytic ozonation Singlet oxygen Synergistic effect Reaction mechanism

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Flow Boiling Heat Transfer Characteristics and Delayed Dry-Out Ability of Non-Azeotropic Mixtures R245fa/R134a in Microchannels

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Journal of Thermal Science 2024年第3期33卷 1174-1188页

作者： LU Yongjie LING Yongjun ZHUANG Yuan LI chenyang OUYANG Hongsheng han Xiaohong Key Laboratory of Refrigeration and Cryogenic Technology of Zhejiang Province Institute of Refrigeration and CryogenicsZhejiang UniversityHangzhou310007China Zhejiang Zhongguang Electrical Co. Ltd.Lishui323000China State Key Lab for Fluorine Greenhouse Gases Replacement and Control Treatment Zhejiang Research Institute of Chemical IndustryHangzhou310014China

Microchannel flow boiling heat transfer has the advantages of strong heat dissipation capacity,good temperature uniformity,and compact *** is an excellent way to thermally manage electronic devices,but when the heat flux exceeds CHF(Critical Heat Flux),the heat transfer performance deteriorates as the working fluid dries ***-azeotropic mixtures have the potential to effectively delay or avoid dry-out during the boiling process due to their temperature slide characteristics which causes the mass transfer *** understand the influence of non-azeotropic mixtures on microchannel flow boiling,using the phase-change microchannel heat sink as the research object,the experiments on the flow boiling heat transfer performance of R245fa/R134a mixtures under different working conditions were carried out,and the characteristics of flow boiling heat transfer were obtained under the different working conditions,and comparison was developed with those of pure substance *** results demonstrated that a small amount of low-boiling-point components in the high-boiling-point working fluid inhibited boiling heat transfer to some extent,and lowered the average heat transfer coefficient under the non-dryout condition slightly lower than that of the pure substance;however,it also effectively delayed the onset of local dry-out and prevented significant deterioration in thermal transfer performance under the lower mass flow rate and higher heat flux,which could enhance the heat sink's stability.

关键词： microchannel flow boiling non-azeotropic mixture heat transfer characteristics dry-out

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Enhanced Performance via π-Bridge Alteration of Porphyrin-Based Donors for All-Small-Molecule Organic Solar Cells

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Chinese Journal of Chemistry 2023年第6期41卷 644-650页

作者： Haojiang Shen Yi Ren Jianfeng Li Yixuan Xu chenyang han Wentao Zou Huajun Xu Yanna Sun Yuanyuan Kan Ke Gao School of Materials Science and Engineering Lanzhou Jiaotong UniversityLanzhouGansu 730070China Science Center for Material Creation and Energy Conversion Institute of Frontier and Interdisciplinary ScienceShandong University QingdaoShandong266237China

All-small-molecule organic solar cells (ASM OSCs) are promising for commercial application due to the well-defined chemical structures, convenient purifying process and low batch-to-batch variation. However, the similarity of molecule structures between small molecule donors and acceptors makes a hard regulation of their blend morphology, which will limit the efficiency.

关键词： All-small-molecule organic solar cells Porphyrin-based small molecule donor Binary device π-bridge engineering Morphology tuning

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Morphology and photocatalytic tetracycline degradation of g-C3N4 optimized by the coal gangue

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结构化学 2024年第2期43卷 38-48页

作者： Kai han Guohui Dong Ishaaq Saeed Tingting Dong chenyang Xiao School of Environmental Science and Engineering Shaanxi University of Science and TechnologyXi'an710021China

Coal gangue(CG),a solid waste from coal mining and processing,has raised concerns about its environmental *** carbon nitride(g-C3N4)is promising for photocatalytic decomposition of organic pollutants,but its performance is hampered by its inherent *** this study,the compound of coal gangue and g-C3N4 was formed by in-situ loading g-C3N4 on the surface of coal *** recombination,the morphology of g-C3N4 changes from block structure to tremella *** change not only increases the specific surface area of g-C3N4,but also broadens the light absorption spectrum of *** with original g-C3N4,the photo-current of the complex in visible light is increased twice,and the tetracycline(TC)degradation rate is 2.1 times *** structure,optical properties,band structure,morphology and charge transfer mechanism of the composite were analyzed by a series of characterization *** is found that coal gangue can promote the space charge transfer and separation of g-C3N4,and the cyclic test compound has good activity *** this paper,a strategy of comprehensive utilization of coal gangue is proposed,which can not only reduce the envi-ronmental risk of coal gangue,but also provide carbon nitride(CN)based photocatalytic materials with superior photocatalytic properties.

关键词： Coal gangue g-C_3N_4 Tetracycline Photocatalytic Adsorption sites

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