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Frontiers of Chemical Science and Engineering 2023年第10期17卷 1593-1607页

作者： Xuanze Li wenyan Tian Caichao Wan sulai Liu Xinyi Liu Jiahui su Huayun Chai Yiqiang Wu College of Materials Science and Engineering Central South University of Forestry and TechnologyChangsha 410004China Department of Hepatobiliary surgery Hunan Provincial People’s HospitalChangsha 410000China

With increasing emphasis on green chemistry,biomass-based materials have attracted increased attention regarding the development of highly efficient functional materials.Herein,a new pore-rich cellulose nanofibril aerogel is utilized as a substrate to integrate highly conductive polypyrrole and active nanoflower-like nickel-cobalt layered double hydroxide through in situ chemical polymerization and electrodeposition.This ternary composite can act as an effective self-supported electrode for the electrocatalytic oxidation of glucose.With the synergistic effect of three heterogeneous components,the electrode achieves outstanding glucose sensing performance,including a high sensitivity(851.4μA·mmol^(−1)·L·cm^(−2)),a short response time(2.2 s),a wide linear range(two stages:0.001−8.145 and 8.145−35.500 mmol·L^(−1)),strong immunity to interference,outstanding intraelectrode and interelectrode reproducibility,a favorable toxicity resistance(Cl^(‒)),and a good long-term stability(maintaining 86.0%of the original value after 30 d).These data are superior to those of some traditional glucose sensors using nonbiomass substrates.When determining the blood glucose level of a human serum,this electrode realizes a high recovery rate of 97.07%–98.89%,validating the potential for highperformance blood glucose sensing.

关键词： cellulose nanofibril aerogel nickel-cobalt layered double hydroxide polypyrrole nonenzymatic glucose sensor

Depositional Characteristics and Formation Mechanisms of Deep-Water Canyon Systems along the Northern South China Sea Margin

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Journal of Earth Science 2020年第4期31卷 808-819页

作者： Hui Chen Xinong Xie Kainan Mao Yunlong He Ming su wenyan Zhang School of Marine Sciences Sun Yat-sen UniversityZhuhai 519082China Southern Marine Science and Engineering Guangdong Laboratory Zhuhai 519082China Hubei Key Laboratory of Marine Geological Resources China University of GeosciencesWuhan 430074China School of Resources and Environmental Engineering Guizhou Institute of TechnologyGuiyang 550003China Institute of Coastal Research Helmholtz-Zentrum GeesthachtGeesthacht 21502Germany

submarine canyon systems are sites for coarser clastic sediment accumulations in the deep-water domains, having the most potential for hydrocarbon reservoirs. Based on the interpretation of high resolution 2 D/3 D seismic and drilling data, depositional characteristics of three large deep-water canyon systems on the South China Sea northern margin have been analyzed. The Central Canyon System has a deep incision geomorphology extending from east to west, featured by distinct canyon segmentations, multi-provenance sediment supplies and multi-stage canyon fillings. The Pearl River Canyon System’s formation is closely related to the development of Pearl River Delta. Its vertical stacking and migrating canyon patterns have changed over time. The depositional architectures and evolution of the recent Penghu-Gaoping Canyon System respond to tectonic movements along the Taiwan-Luzon convergent continental margin. The main controlling factors of the formation and evolution of these three canyon systems include the tectonic setting, sediment supply, sea level change and paleo-geomorphology, among which the former two are dominant. The Penghu-Gaoping Canyon System formed along the subduction structural zone, directly indicating a typical tectonic origin. Numerous seismic data show that the Central Canyon and Pearl River Canyon systems are obviously affected by tectonics, associated local topography and sediment supply.

关键词： deep-water canyon system turbidite channel deep-water reservoir northern margin of South China Sea

Overexpression of GhPFN2 enhances protection against Verticillium dahliae invasion in cotton

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Science China(Life Sciences) 2017年第8期60卷 861-867页

作者： wenyan Wang Yongduo sun Libo Han Lei su Ouixian Xia Haiyun Wang Institute of Microbiology Chinese Academy of SciencesBeijing 100101China State Key Laboratory of Plant Genomics Beijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Growing evidence indicates that actin cytoskeleton is involved in plant innate immune responses,but the functional mechanism remains largely unknown.Here,we investigated the behavior of a cotton profilin gene(GhPFN2) in response to Verticillium dahliae invasion,and evaluated its contribution to plant defense against this soil-borne fungal pathogen.GhPFN2 expression was up-regulated when cotton root was inoculated with V.dahliae,and the actin architecture was reorganized in the infected root cells,with a clear increase in the density of filamentous actin and the extent of actin bundling.Compared to the wild type,GhPFN2-overexpressing cotton plants showed enhanced protection against V.dahliae infection and the actin cytoskeleton organization in root epidermal cells was clearly altered,which phenocopied that of the wild-type(WT) root cells challenged with V.dahliae.These results provide a solid line of evidence showing that actin cytoskeleton reorganization involving GhPFN2 is important for defense against V.dahliae infection.

关键词：棉花黄萎病菌肌动蛋白细胞骨架侵袭过度土传病原真菌植物防御病菌感染细胞重组

Modulating Crystallinity and Miscibility via Side-chain Variation Enable High Performance All-Small-Molecule Organic Solar Cells

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Chinese Journal of Chemistry 2021年第8期39卷 2147-2153页

作者： Yang Wang Qunping Fan Yulong Wang Jin Fang Qi Liu Lei Zhu Jinjing Qiu Xia Guo Feng Liu Wenyan Su Maojie Zhang Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China Department of Chemistry City University of Hong KongKowloon 999077Hong KongChina Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Siyuan LaboratoryDepartment of PhysicsJinan UniversityGuangzhouGuangdong 510632China

Side-chain engineering as one of the most important molecular design strategies has been widely used to improve photovoltaic effi-ciency of active layer materials.Herein,a series of acceptor-n-donor-n-acceptor typed small molecule(SM)-donors(SL1,SL2,SL3,and SL4),on the basis of high-performance SM-donor BTTzR(SL1)with thiazolo[5,4-d]thiazole as the n-bridging units and 3-butylrho-danine as the terminal electron-withdrawing groups,were designed and synthesized to study the effect of the side-chain substitu-tions of BDT-T on the photovoltaic performanee.

关键词： Organic solar cells Small molecule donor substituent effects Aggregation Solvent effects

Approaching 19%efficiency and stable binary polymer solar cells enabled by a solidification strategy of solvent additive

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Science China Chemistry 2023年第5期66卷 1500-1510页

作者： Manjun Xiao Longfei Liu Yongdie Meng Baobing Fan Wenyan Su Conggui Jin Luocheng Liao Fan Yi Chao Xu Rui Zhang Alex K.-Y.Jen Wei Ma Qunping Fan College of Chemistry Key Laboratory of Environment-Friendly Chemistry and Application(Ministry of Education)Xiangtan UniversityXiangtan 411105China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China Department of Physics Chemistry and Biology(IFM)Linköping UniversityLinköping SE-58183Sweden State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640China Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications School of Materials Science and EngineeringChangzhou UniversityChangzhou 213164China Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education School of Materials Science and EngineeringXiangtan UniversityXiangtan 411105China School of Materials Science and Engineering Xi’an University of Science and TechnologyXi’an 710054China Department of Chemistry Institute for Clean EnergyCity University of Hong KongHong Kong 999077China

Additives play a crucial role in enhancing the photovoltaic performance of polymer solar cells(PSCs).However,the typical additives used to optimize blend morphology of PSCs are still high boiling-point solvents,while their trace residues may reduce device stability.Herein,an effective strategy of“solidification of solvent additive(SSA)”has been developed to convert additive from liquid to solid,by introducing a covalent bond into low-cost solvent diphenyl sulfide(DPS)to synthesize solid dibenzothiophene(DBT)in one-step,which achieves optimized morphology thus promoting efficiency and device stability.Owing to the fine planarity and volatilization of DBT,the DBT-processed films achieve ordered molecular crystallinity and suitable phase separation compared to the additive-free or DPS-treated ones.Importantly,the DBT-processed device also possesses improved light absorption,enhanced charge transport,and thus a champion efficiency of 17.9%is achieved in the PM6:Y6-based PSCs with an excellent additive component tolerance,reproducibility,and stability.Additionally,the DBT-processed PM6:L8-BO-based PSCs are further fabricated to study the universality of SSA strategy,offering an impressive efficiency approaching19%as one of the highest values in binary PSCs.In conclusion,this article developed a promising strategy named SSA to boost efficiency and improve stability of PSCs.

关键词： polymer solar cells solidification of solvent additives power conversion efficiency device stability

Green‑Solvent Processed Blade‑Coating Organic Solar Cells with an Efficiency Approaching 19%Enabled by Alkyl‑Tailored Acceptors

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Nano-Micro Letters 2023年第12期15卷 449-462页

作者： Hairui Bai Ruijie Ma Wenyan Su Top Archie Dela Pea Tengfei Li Lingxiao Tang Jie Yang Bin Hu Yilin Wang Zhaozhao Bi Yueling su Qi Wei Qiang Wu Yuwei Duan Yuxiang Li Jiaying Wu Zicheng Ding Xunfan Liao Yinjuan Huang Chao Gao Guanghao Lu Mingjie Li Weiguo Zhu Gang Li Qunping Fan Wei Ma State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China Jiangsu Engineering Research Center of Light‑Electricity‑Heat Energy‑Converting Materials and Applications School of Materials Science and EngineeringChangzhou UniversityChangzhou 213164People’s Republic of China Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education/National Engineering Research Center for Carbohydrate Synthesis Jiangxi Normal University99 Ziyang AvenueNanchang 330022People’s Republic of China Department of Electronic and Information Engineering Research Institute for Smart Energy(RISE)The Hong Kong Polytechnic UniversityKowloon 999077Hong KongPeople’s Republic of China School of Materials Science and Engineering Xi’an University of Science and TechnologyXi’an 710054People’s Republic of China Department of Applied Physics The Hong Kong Polytechnic UniversityKowloon 999077Hong KongPeople’s Republic of China Advanced Materials Thrust Function HubThe Hong Kong University of Science and TechnologyNanshaGuangzhouPeople’s Republic of China School of Chemistry and Chemical Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China Key Laboratory of Applied surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119People’s Republic of China Frontier Institute of Science and Technology Xi’an Jiaotong UniversityXi’an 710054People’s Republic of China Xi’an Key Laboratory of Liquid Crystal and Organic Photovoltaic Materials State Key Laboratory of Fluorine&Nitrogen ChemicalsXi’an Modern Chemistry Research InstituteXi’an 710065People’s Republic of China

Power-conversion-efficiencies(PCEs)of organic solar cells(OSCs)in laboratory,normally processed by spin-coating technology with toxic halogenated solvents,have reached over 19%.However,there is usually a marked PCE drop when the bladecoating and/or green-solvents toward large-scale printing are used instead,which hampers the practical development of OSCs.Here,a new series of N-alkyl-tailored small molecule acceptors named YR-SeNF with a same molecular main backbone are developed by combining selenium-fused central-core and naphthalene-fused endgroup.Thanks to the N-alkyl engineering,NIR-absorbing YR-SeNF series show different crystallinity,packing patterns,and miscibility with polymeric donor.The studies exhibit that the molecular packing,crystallinity,and vertical distribution of active layer morphologies are well optimized by introducing newly designed guest acceptor associated with tailored N-alkyl chains,providing the improved charge transfer dynamics and stability for the PM6:L8-BO:YRSeNF-based OSCs.As a result,a record-high PCE approaching 19%is achieved in the blade-coating OSCs fabricated from a greensolvent o-xylene with high-boiling point.Notably,ternary OSCs offer robust operating stability under maximum-power-point tracking and well-keep>80%of the initial PCEs for even over 400 h.Our alkyl-tailored guest acceptor strategy provides a unique approach to develop green-solvent and blade-coating processed high-efficiency and operating stable OSCs,which paves a way for industrial development.

关键词： Alkyl-tailored guest acceptors Blade-coating Green solvent processing Stability Organic solar cells

Semicrystalline Unfused Polymer Donors with Backbone Halogenation toward Cost-Effective Organic Solar Cells

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CHINESE JOURNAL OF CHEMISTRY 2024年第7期42卷 752-759页

作者： Kong, Yuxin Ju, Shijie Qin, Hongmei Jee, Min Hun Xia, Simeng Ren, Jiaqi Gao, Chao Yuan, Jianyu su, wenyan Woo, Han Young Li, Yuxiang Xian Univ Sci & Technol Sch Mat Sci & Engn Xian 710054 Shaanxi Peoples R China Soochow Univ Inst Funct Nano & Soft Mat FUNSOM Jiangsu Key Lab Carbon Based Funct Mat & Devices 199 Renai Rd Suzhou 215123 Jiangsu Peoples R China Korea Univ Dept Chem Seoul 02841 South Korea Xian Modern Chem Res Inst Xian Key Lab Liquid Crystal & Organ Photovolta Mat State Key Lab Fluorine & Nitrogen Chem Xian 710065 Shaanxi Peoples R China

Developing novel unfused building blocks with simple synthesis and low cost is essential to advance and enrich cost-effective polymer donors; however, it remains a challenge due to the lack of efficient molecular strategies. Herein, a class of low-cost and fully unfused polymer donors with precisely regulated backbone planarity via halogenation was designed and synthesized, namely PDTBTBz-2H, PDTBTBz-2F, and PDTBTBz-2Cl. These polymer donors possess a four-step synthesis route with over 80% yield from cheap raw chemicals comparable to existing low-cost polymer donors, such as PTQ10. Benefitting from the planar backbone via incorporating the FS non-covalent interactions, PDTBTBz-2F exhibits more robust J-type aggregation in solution and a long-ranged molecular stacking in film relative to PDTBTBz-2H and PDTBTBz-2Cl. Moreover, the systematical study of PDTBTBz-based organic solar cells (OSCs) reveals the close relationship between optimized molecular self-assembly and charge separation/transport regarding backbone halogenation when paired with the non-fullerene acceptor (Y6-BO-4F). As a result, the photovoltaic devices based on semicrystalline PDTBTBz-2F achieved a promising power conversion efficiency (PCE) of 12.37%. Our work highlighted the influence of backbone halogenation on the molecular self-assembly properties and a potential unfused backbone motif for further developing cost-effective OSCs.

关键词： Low-cost Polymer donors Backbone halogenation Molecular self-assembly Organic solar cells EFFICIENCY

Trialkylsilyl-thiophene-conjugated acceptor for efficient organic solar cells compatible with spin-coating and blade-coating technologies

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Science China Chemistry 2024年

作者： Tengfei Li Qiang Wu Zefan Yao Hairui Bai Wenyan Su Rui sun Lingxiao Tang Zhaozhao Bi Xiaojun Li Weiguo Zhu Jie Min Qunping Fan Wei Ma The Institute for Advanced Studies Wuhan University Jiangsu Engineering Research Center of Light-Electricity-Heat Energy-Converting Materials and Applications School of Materials Science and Engineering and Changzhou University School of Materials Science and Engineering Xi'an University of Science and Technology College of Chemistry and Molecular Engineering Peking University Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University

Sidechain engineering as an efficient and convenient strategy has been widely used to optimize molecular structure of photovoltaic materials for boosting power conversion efficiency(PCE) of organic solar cells(OSCs). Herein, a new Y-series acceptor named Y-ThSi with trialkylsilyl-substituted thiophene as conjugated sidechain is developed. Compared with its parental Y6 with multiple intermolecular interactions, Y-ThSi has a unitary molecular packing due to the additional steric hindrance from twodimensional(2D)-conjugated trialkylsilyl-thiophene. Therefore, Y-ThSi shows an obviously blue-shifted absorption with an onset of ～850 nm but significantly up-shifted lowest unoccupied molecular orbital energy level. For the PM6:Y-ThSi pair, the spin-coating OSCs achieve a decent PCE of 14.56% with an impressively high photovoltage(VOC) of 0.936 V. Inspired by its high VOCand narrow absorption, Y-ThSi is introduced into near-infrared absorbing binary PM6:BTP-eC9 host to construct ternary OSCs. Thanks to the complementary absorption, optimized morphology, and minimized energy loss properties, the PM6:BTP-eC9:Y-ThSi-based OSCs offer a higher PCE of 18.34%. Moreover, our developed strategy can overcome the commonly existed PCE drop when the blade-coating towards large-scale printing is used instead. Therefore, a comparable PCE of 18.34% is achieved, which is one of the best values for the blade-coating OSCs so far.

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Synthesis and photovoltaic property of terpolymers containing benzodithiophene, phenanthrophenazine and benzothiadizole with a changing subtituents

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Synthesis and photovoltaic property of terpolymers containin...

第二届新型太阳能电池学术研讨会

作者： Qunping Fan Yu Liu Wenyan Su Manjun Xiao Renqiang Yang Weiguo Zhu College of Chemistry Xiangtan University Key Lab of Environment-Friendly Chemistry and Application in Ministry of Education Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences

Three novel donor-acceptor(D-A) type random terpolymers of PBDTT-PPz BT-H, PBDTT-PPz BT-F and PBDTT-PPz BT-O were synthesized by copolymerizing electron-rich 5,8-di alkylthienyl substituted benzodithiophene(BDTT) and two electron-deficient phenanthrophenazine(PPz) and benzothiadiazole(BT) units. By changing the substituents at 5,6-positions of BT, their optoelectronic properties were rationally adjusted for application as donor materials in polymer solar cells(PSCs). The maximum power conversion efficiency(PCE) of 6.3% was obtained with an open-circuit voltage(V) of 0.75 V, a short-circuit current(J-sc) of 13.0 mA cm and a fill factor(FF) of 64.8% in the PBDTT-PPz BT-O based PSCs using PC71 BM as an acceptor, which is much higher than those PCE values in the PBDTT-PPz BT-H and PBDTT-PPz BT-F based devices. To the best of our knowledge, these are the highest recorded maximum PCE, Jsc and FF values obtained to date compared with previously reported phenazine copolymeric derivatives in BHJ-PSCs.[1-4] This work illustrated the potential of these random conjugated terpolymers as promising donor materials in the application of PSCs.

关键词： Benzodithiophene Phenanthrophenazine Benzothiadiazole Polymer solar cell

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D2D网络中SVC视频文件的缓存策略

南京邮电大学学报（自然科学版） 2022年第2期42卷 54-65页

作者：岳雯雁赵夙朱琦南京邮电大学通信与信息工程学院江苏南京210003 南京邮电大学江苏省无线通信重点实验室江苏南京210003

D2D用户缓存技术可以有效减轻基站(Base Station,BS)的缓存负担。为了满足用户对多种视频文件质量的需求,可以采用可伸缩视频编码(Scalable Video Coding,SVC)方法来处理文件。文中提出了一种端到端(Device-to-Device,D2D)用户缓存场景... 详细信息

D2D用户缓存技术可以有效减轻基站(Base Station,BS)的缓存负担。为了满足用户对多种视频文件质量的需求,可以采用可伸缩视频编码(Scalable Video Coding,SVC)方法来处理文件。文中提出了一种端到端(Device-to-Device,D2D)用户缓存场景下对SVC文件的定价和缓存策略联合优化算法。首先考虑用户和内容提供者(Content Provider,CP)的利益,结合SVC文件各层数据包间的联系,推导了缓存文件的激活概率以及请求文件通过D2D传输或BS传输的概率;在此基础上,综合考虑传输与缓存消耗,定义用户和CP的效用函数,建立以CP为领导者,用户为跟随者的斯坦伯格博弈模型;最后,分别优化文件价格与缓存策略。仿真结果表明,该算法能够合理利用网络中的传输和缓存资源,从而提高系统的总效用。

关键词： D2D缓存可伸缩视频编码(SVC) 激励机制斯坦伯格博弈