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Continuous Synthesis of Main-Chain-type Fluorinated Graft Copolymers via Successive Flow START polymerization and Cu(0)-Mediated RDRP

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Chinese Journal of polymer Science 2023年第8期41卷 1155-1161,I0004页

作者： Peng Wang Shuai-Jie Chen Jian-Nan Cheng Wei-Wei He Li-Fen Zhang Zhen-Ping Cheng State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationSuzhou key Laboratory of Macromolecular Design and Precision SynthesisCollege of ChemistryChemical Engineering and Materials ScienceSoochowUniversitySuzhou 215123China State Key Laboratory of Radiation Medicine and Protection School of Radiological and Interdisciplinary Sciences(RADX)Soochow UniversityCollaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education InstitutionsSuzhou 215123China

Fluorinated polymers are receiving more and more attention worldwide due to their unique chemical properties,and modified fluorinated polymers with different topologies are persued for enriching and enhancing their performance in a variety of application *** this work,main-chain-type semifluorinated graft copolymers are produced steadily in continuous tube reactors via photocontrolled step transferaddition and radical-termination(START)polymerization and Cu(0)-mediated reversible deactivation radical polymerization(Cu(0)-RDRP)at room temperature for the first ***,semifluorinated alternating copolymer(AB)n B is prepared by START polymerization of 1,6-diiodoperfluorohexane(A)and 1,7-octadiene(B)in the first quartz pipeline under irradiation with purple LED light at 20℃.The(AB)nB with periodic C―I bonds is then flowed into the second copper pipeline directly and acts as the macroinitiators for Cu(0)-RDRP of methyl acrylate(MA)to obtain corresponding graft copolymer(AB)n *** work provides a new strategy for continuous synthesis of fluorinated graft copolymer materials.

关键词： Fluoropolymers Photopolymerization Graft polymer Cu(O)-mediated RDRP START polymerization

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Reversible CO_(2)-, Photo-and Thermo-Triple Responsive Supramolecular Chirality of Azo-containing Block Copolymer Assemblies Prepared by polymerization-induced Chiral Self-assembly

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Chinese Journal of polymer Science 2022年第1期40卷 56-66页

作者： Ya-Jing Sun Xiao-Xiao Cheng Teng-Fei Miao Hao-Tian Ma Wei Zhang Xiu-Lin Zhu Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application State and Local Joint Engineering Laboratory for Novel Functional Polymeric MaterialsCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou Industrial ParkSuzhou 215123China

polymerization-induced chiral self-assembly(PICSA)is an efficient strategy that not only allows the construction of the supramolecular chiral assemblies in a controlled manner but also can regulate the morphology in ***,a series of azobenzene-containing block copolymer(Azo-BCP)assemblies with tunable morphologies and supramolecular chirality were obtained through the PICSA *** supramolecular chirality of Azo-BCP assemblies could be regulated by carbon dioxide(CO_(2))stimulus,and completely recovered by bubbling with Ar.A reversible morphology transformation and chiroptical switching process could also be achieved by the alternative 365 nm UV light irradiation and heatingcooling ***,the supramolecular chirality is thermo-responsive and a reversible chiral-achiral switching was successfully realized,which can be reversibly repeated for at least five *** work provides a feasible strategy for constructing triple stimuli-responsive supramolecular chiral nano-objects in situ.

关键词： Supramolecular chirality polymerization-induced self-assembly Azobenzene CO_(2)responsiveness

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A universal strategy for achieving dual cross-linked networks to obtain ultralong polymeric room temperature phosphorescence

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Science China Chemistry 2023年第4期66卷 1161-1168页

作者： Yifan Niu Yan Guan Chunye Long Chaofan Ren Jiwen Lu Chanjuan Jin Ping Wang Xinghe Fan He-Lou Xie Key Laboratory of Environment-friendly Chemistry and Application of Ministry of Education Key Laboratory of Polymeric Materials and Application Technology of Hunan Province and Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan ProvinceCollege of ChemistryXiangtan UniversityXiangtan 411105China Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCenter for Soft Matter Science and EngineeringCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Efficient polymeric room-temperature phosphorescence(PRTP)with excellent processability and flexibility is highly desirable but still faces formidable ***,a general strategy is developed for efficient PRTP through photo-polymerization of phosphor monomers and N-isopropylacrylamide(NIPAM)spontaneously without a *** ultralong lifetime of 3.54 s with afterglow duration time of 25 s and decent phosphorescent quantum efficiency of 13%are *** efficient PRTP has been demonstrated to be derived from the synergistic effect of the covalent and hydrogen bonds networks formed through photo-polymerization of *** electron paramagnetic resonance(EPR)spectra confirmed that methyl radicals are generated under the irradiation of ultraviolet light and promote the formation of covalent cross-linking *** strategy has also been proved to be generalizable to several other phosphor ***,the polymer films display ultrahigh temperature resistance with long afterglows even at 140℃ and unexampled ultralong lifetime of 2.45 s in aqueous *** work provides a simple and feasible avenue to obtain efficient PRTP.

关键词： universal strategy ultralong polymeric room temperature phosphorescence dual cross-linked networks photopolymerization crosslinker

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Synthesis of Proline-Derived Helical Copolyacetylenes as Chiral Stationary Phases for HPLC Enantioseparation

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Chinese Journal of polymer Science 2025年第1期43卷 61-69,I0007页

作者： Yue Li Shu-Ming Kang Ge Shi Yi-Fu Chen Bo-Wen Li Jie Zhang Xin-Hua Wan Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China School of Materials Science and Engineering Henan Joint International Research Laboratory of Living Polymerizations and Functional NanomaterialsHenan Key Laboratory of Advanced Nylon Materials and ApplicationZhengzhou UniversityZhengzhou450001China

A series of optically active copolymers with various feed ratios have been synthesized through helix-sense-selective copolymerization catalyzed by[Rh(norbornadiene)Cl]*** process involves two proline-derived acetylene monomers,(S)-N-(4-chlorophenyl)carbamoyl-2-ethynyl pyrrolidine(MCl)and(S)-N-(tert-butoxycarbonyl)-2-ethynyl pyrrolidine,followed by acidic deprotection and *** copolymers adopt helical conformations with a preferred handedness,as demonstrated by nuclear magnetic resonance spectroscopy and a series of spectroscopic *** chiroptical activity intensity of copolymer has been found to increase with MCl ***,the enantioseparation capabilities of copolymers containing 95 mol%,90 mol%,and 85 mol%MCl units have been assessed as chiral stationary phases in high-performance liquid chromatography because of their good chiroptical *** chiral stationary phases effectively enantioseparate racemic alcohols,sulfoxides,amides,and metal ***,the copolymer with 90 mol%MCl shows superior chiral recognition ability,especially for 1-(2,4-dichlorophenyl)-2-(1H-imidazol-1-yl)ethanol(α=1.19)and 4-methylbenzenesulfinamide(α=1.47).Insights from molecular dynamic simulation and autodock analysis indicate that hydrogen bonding andπ-πstacking interactions between the chiral stationary phases and enantiomers play a key role for successful chiral *** contribution not only demonstrates the importance of hydrogen bonding donor and copolymer chiroptical activity of chiral stationary phases for chiral resolution,but will also provide valuable insights for the future development of novel stationary phases.

关键词： Helical copolyacetylene Chiral stationary phase High performance liquid chromatography Enantioseparation Hydrogen bonding

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Highly efficient room temperature phosphorescent liquid crystalline polymer optical waveguides for advanced optoelectronics

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Science China Chemistry 2024年第10期67卷 3450-3457页

作者： Jie Li Yan Guan Wei Xia Jin-Kang Chen Jiang Huang Yi Chen Qi Lin Er-Qiang Chen He-Lou Xie Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education and Key Laboratory of Advanced Functional Polymer Materials of CollegesUniversities of Hunan Province and College of ChemistryXiangtan UniversityXiangtan 411105China School of Physics and Optoelectronics Xiangtan UniversityXiangtan 411105China Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Active organic optical waveguide materials(OOWMs)incorporating room temperature phosphorescence(RTP)hold significant promise for diverse applications in photonic and optoelectronic *** this potential,realizing active RTP optical waveguides with large-sized ordered structures and minimal light loss remains a formidable *** address this issue,we present a groundbreaking thermoplastic active OOWM with low light loss,leveraging room temperature phosphorescent liquid crystalline polymer(LCP).This innovative material can be easily synthesized through the copolymerization of phosphorescent and liquid crystalline *** resulting RTP copolymer exhibits a nematic liquid crystal phase with a phosphorescence lifetime of approximately 0.15 ms and an afterglow duration of around 1 *** the excellent processability of LCP,we successfully produce meter-scale fibers via melt *** RTP LCP fibers,characterized by a high orientation of mesogens along the fiber axis,demonstrate superior light confinement and efficient light conduction compared to unoriented samples,resulting in a low optical loss coefficient of 0.13 dB/***,the thermal responsiveness of the RTP LCP optical waveguide enables its use as a photo *** pioneering work paves the way for the design of new OOWMs tailored for advanced photonics and optoelectronics devices.

关键词： room temperature phosphorescence liquid crystalline polymer active optical waveguide

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Enhanced charge collection of AgNWs-based top electrode to realize high-performance,all-solution processed organic solar cells

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Science China Chemistry 2024年第10期67卷 3347-3356页

作者： Juanyong Wan Yang Chen Weijie Chen Jinfeng Xia Guang Zeng Jianlei Cao Chuang Jin Yunxiu Shen Xiaoxiao Wu Haiyang Chen Junyuan Ding Xue-mei Ou Yaowen Li Yongfang Li Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow UniversitySuzhou 215123China State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Jiangsu Sidike New Materials Science and Technology Co. Ltd.Suqian 215400China

All-solution processed organic solar cells are the ultimate aim of printable photovoltaics,but their electrical losses arising from poor contact of top electrodes greatly limit efficiency *** solve the problem,a solution-processed hybrid top electrode was constructed using silver nanowires(AgNWs)as the skeleton and ZnO nanoparticles(ZnO-NPs)as the *** constructing the skeleton,a spin-rinsing treatment was first used to reduce the amount of the residual insulating polyvinylpyrrolidone wrapped around the AgNWs to promote intimate contact among the AgNWs in the ***,the ZnO-NPs matrix was deposited onto the AgNWs skeleton,bridging the AgNWs skeleton with the underlayer ZnO-NPs electron transporting layer(ETL).The underlayer ZnO-NPs ETL can also induce the growth of the ZnO-NPs matrix to minimize lattice mismatch,which creates additional transport channels from the ETL to the AgNWs skeleton for charge *** a result,the obtained electrode significantly enhances the electrical contact in the device,thus delivering record power conversion efficiencies of 16.04%and 14.54%for rigid and flexible all-solution processed OSCs,respectively.

关键词： solution-processed top electrode organic solar cells AgNWs electrical contact

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Piperazine-Assisted Construction of 2D/3D Wide-Bandgap Perovskite for Realizing High-Efficiency Perovskite/Organic Tandem Solar Cells

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Chinese Journal of Chemistry 2024年第16期42卷 1819-1827页

作者： Ziyue Wang Shuaiqing Kang Xia Zhou Haiyang Chen Xingxing Jiang Zhichao Zhang Jialei Zheng Ruopeng Zhang Weijie Chen Jiandong Zhang Yaowen Li Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow UniversitySuzhouJiangsu 215123China State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsu 215123China College of Physics and Electronics Engineering Hengyang Normal UniversityHengyangHunan 421002China

Monolithic perovskite/organic tandem solar cells(TsCs)have gained significant attention due to their easy device integration and the potential to surpass the Shockley-Queisser limit of single-junction solar ***,the surfaces of wide-bandgap perovskite films are densely populated with defects,leading to severe non-radiative recombination and energy *** a consequence,the power conversion efficiency(PCE)of perovskite/organic TSCs lags behind that of other TSC *** address these issues,we designed a functional ammonium salt,4-(2-hydroxyethyl)piperazin-1-ium iodide(Pzol),comprising a piperazine iodide and a terminated hydroxyl group,which was applied for post-treating the perovskite *** findings reveal that Pzol reacts with and consumes residual PbX_(2)(X:I or Br)to form a 2D perovskite component,thereby eliminating Pb^(0)defects,while the terminated hydroxyl group in PZOI can also passivate uncoordinated Pb^(2+).Consequently,the shallow/deep-level defect densities of the 2D/3D perovskite film were significantly reduced,leading to an enhanced PCE of single-junction 2D/3D wide-bandgap perovskite solar cells to 18.18% with a reduced energy loss of 40 ***,the corresponding perovskite/organic TSCs achieved a remarkable PCE of 24.05% with enhanced operational stability(T_(90)~500h).

关键词： Perovskite/organic tandem solar cell Defect states Piperazine ion salt Energy conversion Low-dimensional materials Perovskitesolar cells 2D/3D perovskites Efficiency

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Recent advances in the chemical recycling of polyesters

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Fundamental Research 2024年第3期5卷 935-950页

作者： Wang, Sheng Li, Jing Li, Xiaohong Tu, Yingfeng Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 China Key Laboratory of Ionic Rare Resources and Environment of Ministry of Natural Resources Jiangxi College of Applied Technology Ganzhou 341000 China

Whilst polymers have played a significant role in the development of modern society, a rapid growth of polymer waste is disadvantageously influencing communities and ecosystems across the world. Constructing a closed-loop life cycle of polymer materials is urgently in demand. Chemical recycling of polyesters, which can be recovered to the pristine monomers or transformed to other value-added products, has been considered as an appealing recycling approach to circular polymer economy and attracted enormous attention in the last several years. This review highlights some recent progress in the chemical recycling of diverse polyesters, including commercialized poly(lactic acid), poly(ε-caprolactone), poly(ethylene terephthalate), as well as various novel chemically recyclable polyesters and polycarbonates. Eventually, based on these technological developments, we discuss the remaining challenges and identify promising research opportunities, providing insights into future directions for achieving a genuine closed-loop polymer economy. © 2024

关键词： Catalysis Chemical recycling Circular polymer economy Cyclic monomers Depolymerization Polyesters

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New Carbon Nitride C_(3)N_(3) Additive for Improving Cationic Defects of Perovskite Solar Cells

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Energy & Environmental Materials 2023年第1期6卷 281-288页

作者： Zuhong Li Jiaxin Feng Jinguo Cao Jiaren Jin Yijun Zhou Duoling Cao Zihui Liang Bicheng Zhu Ming Li Li Zhao Shimin Wang Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science and EngineeringHubei UniversityWuhan 430062China Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional MoleculesHubei Key Laboratory of Polymer MaterialsSchool of Chemistry and Chemical EngineeringHubei UniversityWuhan 430062China Laboratory of Solar Fuel Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074China

Due to the loss of organic amine cations and lead ions in the structure of the iodine-lead methylamine perovskite solar cell,there are a large number of defects within the film and the recombination loss caused by grain boundaries,which seriously hinder the further improvement of power conversion efficiency and ***,a novel carbon nitride C_(3)N_(3) incorporated into the perovskite precursor solution is a multifunctional strategy,which not only increases the light absorption strength,grain size,and hydrophobicity of the perovskite film,but also effectively passivates the bulk and interfacial defects of perovskite and verified by the first-principles density functional theory *** a result,the efficiency and stability of perovskite solar cells are *** device with 0.075 mg mL^(-1) C_(3)N_(3) additive delivers a champion power conversion efficiency of 19.91%with suppressed hysteresis,which is significantly higher than the 18.16% of the control *** addition,the open-circuit voltage of the modified device with the maximum addition as high as 1.137 V is 90.96% of the Shockley–Queisser limit(1.25 V).Moreover,the power conversion efficiency of the modified device without encapsulation can maintain nearly 90% of its initial value after being stored at 25℃ and 60% relative humidity for 500 *** work provides a new idea for developing additives to improve the power conversion efficiency and stability of perovskite solar cells.

关键词： additive C_(3)N_(3) humidity stability passivate defect perovskite solar cells

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埋底界面增韧助力实现机械稳定和高效的宽带隙柔性钙钛矿太阳能电池（英文）

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Science China Materials 2025年第5期68卷 1415-1423页

作者：曹建磊陈炜杰赵晨荔徐佳诚郑佳磊亢帅青朱娟章建东李耀文 Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow University State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow University Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow University

柔性宽带隙钙钛矿太阳能电池具有构筑高效叠层太阳能电池的独特优势.具有低温加工和优异稳定性的氧化镍是制备柔性宽带隙钙钛矿太阳能电池的理想空穴传输层.然而,钙钛矿埋底界面存在大量缺陷以及氧化镍和钙钛矿界面结合力较弱,严重影响... 详细信息

柔性宽带隙钙钛矿太阳能电池具有构筑高效叠层太阳能电池的独特优势.具有低温加工和优异稳定性的氧化镍是制备柔性宽带隙钙钛矿太阳能电池的理想空穴传输层.然而,钙钛矿埋底界面存在大量缺陷以及氧化镍和钙钛矿界面结合力较弱,严重影响了柔性器件的效率和机械稳定性.我们通过引入多功能分子N-乙酰-L-谷氨酸(NALG)开发了一种埋底界面修饰策略来解决上述问题.理论计算和实验结果表明NALG分子的羧基和酰胺可以分别与氧化镍和钙钛矿结合,能够钝化界面缺陷以及增强钙钛矿的结晶.更重要的是, NALG作为桥连分子大幅增强氧化镍和钙钛矿的界面韧性.最终,柔性宽带隙钙钛矿太阳能电池实现了16.28%的能量转化效率.同时,柔性器件表现出优异的机械稳定性,循环弯曲10000次仍能保持初始效率的83%(弯曲半径为5 mm).器件也具有优越的长期运行稳定性和湿热稳定性.

关键词： wide-bandgap perovskite flexible perovskite solar cells buried interface defect passivation mechanical stability

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