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High-performance solid-solution potassium-ion intercalation mechanism of multilayered turbostratic graphene nanosheets

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Journal of Energy Chemistry 2022年第4期31卷 814-823页

作者： Jiae Um Seung Uk Yoon Hoseong Kim Beom Sik Youn Hyoung-Joon Jin Hyung-Kyu Lim Young Soo Yun Program in Environmental and Polymer Engineering Inha Universityncheon 22212 South Korea Department of Polymer Science and Engineering Inha UniversityIncheon 22212South Korea Division of Chemical Engineering and Bioengineering Kangwon National University Chuncheon Gangwon-do 24341 South Korea KU-KIST Graduate School of Converging Science and Technologyea University 145 Anam-roSeongbuk-guSoul02841 South Korea Department of Integrative Energy Engineering 145 Anam-roSongbuk-guKorea UniversitySeoul 02841 South Korea

The solid-solution reaction between an alkali cation and an active host material is known as a singlephase redox mechanism,and it is typically accompanied by a continuous voltage *** is distinct from the typical alkali cation intercalation reaction at an equivalent site of the active host material,which exhibits a voltage ***,we report an unusual solid-solution potassium-ion intercalation mechanism with a low-voltage plateau capacity on multilayered turbostratic graphene nanosheets(T-GNSs).Despite the disordered graphitic structure with a broad range of d-spacings(3.65–4.18À),the T-GNSs showed a reversible plateau capacity of~200 m A h g^(-1),which is higher than that of a well-ordered graphite nanoplate(~120 m A h g^(-1)).In addition,a sloping capacity of~220 m A h g^(-1)was delivered with the plateau capacity,and higher rate capabilities,better reversibility,and a more stable cycling performance were confirmed on the turbostratic ***-principles calculations suggest that the multitudinous lattice domains of the T-GNSs contain diverse intercalation sites with strong binding energies,which could be the origin of the high-performance solid-solution potassium-ion intercalation behavior when the turbostratic graphene stacks have a d-spacing smaller than that of equilibrium potassium–graphite intercalation compounds(5.35À).

关键词： Turbostratic graphite Graphene nanosheet Defective carbon Anode Potassium-ion batteries

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Preparation of Amphiphilic Ag-Polyethylenimine Dendritic polymer Nanocapsules for Surface-Enhanced Raman Scattering Detection

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ACS Applied polymer Materials 2024年第6期6卷 3222-3232页

作者： Xu, Qi-Yang Lin, Gong-De Wang, Kuan-Syun Huang, Ying-Chi Huang, Yu-Xuan Lin, Chen-Yang Wu, Chien-Hsin Jeng, Ru-Jong Liu, Ting-Yu Institute of Polymer Science and Engineering National Taiwan University Taipei10617 Taiwan Department of Materials Engineering Ming Chi University of Technology New Taipei City243303 Taiwan Advanced Research Center for Green Materials Science and Technology National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Taoyuan City32003 Taiwan College of Engineering & Center for Sustainability and Energy Technologies Chang Gung University Taoyuan33302 Taiwan

According to recent research, amphiphilic surfactants can stabilize metal nanoparticles because of their excellent dispersibility. Therefore, herein, amphiphilic polyethylenimine (PEI) dendritic polymer nanocapsules were synthesized by using PEI and poly(urea/malonamide) dendrons of different generations. Then, silver nanoparticles (AgNPs) were immobilized on PEI dendritic polymer nanocapsules for surface-enhanced Raman scattering (SERS) detection. Well-designed amphiphilic PEI dendrons possessed abundant nucleation sites for AgNP reduction, which could directly reduce silver ions to AgNPs without additional reducing agents at room temperature, showing the stronger reducing capability than pristine PEI. The size and interparticle gap of AgNPs were manipulated by varying the size of the PEI dendritic polymer and the ratio of PEI dendritic nanocapsules/AgNO3. As a result, the Ag-PEI-dendritic polymer was able to perform Raman enhancing capability. Especially, a sample, namely, Ag-PEI-G0.5, exhibited the strongest Raman enhancement effect, due to the optimal size and interparticle gap of AgNPs. The Ag-PEI dendritic SERS nanocapsules could rapidly and reproducibly detect many kinds of biomolecules (adenine, methylene blue, and beta-carotene) with a linear calibration curve. The limit of detection (LOD) of adenine was lower than 10-7 M. Therefore, this facile method to in situ prepare Ag-PEI dendritic SERS nanocapsules (reducing agent free) possesses high potential to be applied in rapid SERS detection for the quantitative analysis of biomolecules. © 2024 American chemical Society

关键词： Silver nanoparticles

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Hydrogen bonding-induced oxygen clusters and long-lived room temperature phosphorescence from amorphous polyols

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Chinese chemical Letters 2023年第1期34卷 187-191页

作者： Ya-Ling Wang Kang Chen Hai-Ru Li Bo Chu Zishan Yan Hao-Ke Zhang Bin Liu Shengliang Hu Yongzhen Yang School of Energy and Power Engineering North University of ChinaTaiyuan 030051China MOE Key Laboratory of Interface Science and Engineering in Advanced Materials Taiyuan University of TechnologyTaiyuan 030024China Department of Polymer Science and Engineering MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationZhejiang UniversityHangzhou 310027China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030032China

Developing non-conjugated luminescent polymers(NCLPs)with fluorescence and long-lived roomtemperature phosphorescence is of great significance for revealing the essence of NCLPs luminescence,which has gradually attracted the attention of researchers in recent ***,polymethylol(PMO)and poly(3-butene-1,2-diol)(PBD)with polyhydroxy structures were prepared and their luminescence behaviors were investigated to reveal the clusteroluminescence(CL)*** with polyvinyl alcohol with non-luminescent behavior,PMO and PBD exhibit cyan-blue fluorescence with quantum yields of ca.12%and green room-temperature phosphorescence with lifetimes of ca.89 ms in the solid *** fluorescence and phosphorescence exhibit typical excitation-dependent CL *** and theoretical analyses show that the strong hydrogen-bonding interaction of PMO and PBD greatly promotes the formation of oxygen clusters and the through-space n-n interaction of oxygen atoms,enabling fluorescence and phosphorescence *** results have enormous implications for understanding the CL mechanism of NCLPs and provide a new polymer design strategy for the rational design of novel NCLPs materials.

关键词： Clusteroluminescence Through-space interactions Polymethylol Poly(3-butene-1,2-diol) Hydrogen bonding polymerization

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Chevrel phase: A review of its crystal structure and electrochemical properties

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Progress in Natural science:Materials International 2023年第1期33卷 8-15页

作者： Meng Liu Guocheng Lv Tianming Liu Hao Liu Lingchang Kong Lintao Tian Wenxiu Rao Yuxin Li Libing Liao Juchen Guo Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes National Laboratory of Mineral Materials School of Materials Science and Technology China University of Geosciences(Beijing) School of Science China University of Geosciences Materials Science and Engineering Program University of California-Riverside Department of Chemical and Environmental Engineering University of California – Riverside

Chevrel phase compounds have attracted increasing attention as electrochemical energy storage materials and electro-catalysts. Benefiting from their unique crystal structure, Chevrel phase compounds can not only function as the host structures for reversible intercalation of a broad range of cations, but also exhibit high catalytic activity in electrochemical reduction reactions. Here we provide an overview of recent progress in the development of Chevrel phase materials including new understanding of structural features, synthetic methods, and electrochemical properties. A brief conclusion and perspectives on the future development of Chevrel phase materials are also provided.

关键词： Chevrel phase Electrochemical properties Energy storage Electro-catalysis

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Smart Soft Materials with Multiscale Architecture and Dynamic Surface Topographies

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Accounts of Materials Research 2022年第11期3卷 1115-1126页

作者： Songshan Zeng Andrew T.Smith Kuangyu Shen Luyi Sun Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut 06269United StatesPresent Address:Macao Institute of Materials Science and Engineering(MIMSE)Zhuhai MUST Science and Technology Research InstituteFaculty of Innovation EngineeringMacao University of Science and TechnologyTaipa999078MacaoChina Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut 06269United States

CONSPECTUS:Smart soft materials have one or more characteristics that can be significantly altered in convertible fashions by external stimuli,such as light,moisture,mechanical force,temperature,electric/magnetic fields,pH,and so *** materials can lead to widespread application in multifunctional smart ***,various smart soft materials have been developed under the inspiration of the intriguing multiscale structures,adaptive mechanisms,and dynamic responses of natural life,with an aim to further design advanced material systems with novel,intriguing,and unprecedented properties.

关键词： Smart properties. Dynamic

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Molecular engineering of Benzobisoxazole-Based Conjugated polymers for High-Performance Organic Photodetectors and Fingerprint Image Sensors

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Energy & Environmental Materials 2025年第1期8卷 151-163页

作者： Cheol Shin WonJo Jeong Ezgi Darici Lee Jong Baek Park Hyungju Ahn Seyeon Baek Myeong In Kim Dae Sung Chung Kang-Il Seo In Hwan Jung Department of Organic and Nano Engineering and Human-Tech Convergence ProgramHanyang University222 Wangsimni-roSeongdong-guSeoul 04763Korea CLAP Co. Ltd.1342Seongnam-daeroSujeong-guSeongnam-siGyeonggido 13120Korea Pohang Accelerator Laboratory POSTECHPohang 37673Korea Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Korea

Various novel conjugated polymers(CPs)have been developed for organic photodetectors(OPDs),but their application to practical image sensors such as X-ray,R/G/B,and fingerprint sensors is *** this article,we report the entire process from the synthesis and molecular engineering of novel CPs to the development of OPDs and fingerprint image *** synthesized six benzo[1,2-d:4,5-d’]bis(oxazole)(BBO)-based CPs by modifying the alkyl side chains of the *** relationships between the molecular structure and the OPD performance were revealed,and increasing the number of linear octyl side chains on the conjugated backbone was the best way to improve Jph and reduce Jd in the *** optimized CP demonstrated promising OPD performance with a responsivity(R)of 0.22 A/W,specific detectivity(D^(*))of 1.05×10^(13)Jones at a bias of-1 V,rising/falling response time of 2.9/6.9μs,and cut-off frequency(f_(-3dB))of 134 kHz under collimated 530 nm LED ***,a fingerprint image sensor was fabricated by stacking the POTB1-based OPD layer on the organic thin-film transistors(318 ppi).The image contrast caused by the valleys and ridges in the fingerprints was obtained as a digital signal.

关键词： alkyl side chain engineering fingerprint image sensor on/off ratio organic photodetector specific detectivity

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Facile synthesis of accordion-like porous carbon from waste PET bottles-based MIL-53(Al)and its application for high-performance Zn-ion capacitor

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Green Energy & Environment 2024年第7期9卷 1138-1150页

作者： Jiaxin Li Shuai Zhang Yumeng Hua Yichao Lin Xin Wen Ewa Mijowska Tao Tang Xuecheng Chen Rodney S.Ruoff Faculty of Chemical Technology and Engineering West Pomeranian University of TechnologyPiastow Ave.4271-065SzczecinPoland Key State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China School of Safety Engineering China University of Mining and TechnologyXuzhou221116China Institute of Advanced Electrical Materials Qingdao University of Science and TechnologyQingdao266042China Institute for Basic Science Center for Multiple Dimensional Carbon Materials Ulsan44919Republic of Korea Department of Chemistry Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea Department of Materials Science and Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea

It is of great scientific and economic value to recycle waste poly(ethylene terephthalate)(PET)into high-value PET-based metal organic frameworks(MOFs)and further convert it into porous carbon for green energy storage *** the present study,a facile and costeffective hydrothermal process was developed to direct recycle waste PET bottles into MIL-53(Al)with a 100% conversation,then the MOFderived porous carbon was assembled into electrodes for high-performance *** results indicated that the as-synthesized carbon exhibited high SSA of 1712 m^(2)g^(-1)and unique accordion-like structure with hierarchical *** to these advantageous characters,the assembled three-electrode supercapacitor displayed high specific capacitances of 391 F g^(-1)at the current density of 0.5 A g^(-1)and good rate capability of 73.6% capacitance retention at 20 A g^(-1)in 6 mol L^(-1)KOH ***,the assembled zinc ion capacitor still revealed outstanding capacitance of 335 F g^(-1)at 0.1 A g^(-1),excellent cycling stability of 92.2% capacitance retention after 10000 cycles and ultra-high energy density of 150.3 Wh kg^(-1)at power density of 90 W kg^(-1)in 3 mol L^(-1)ZnSO_(4)*** is believed that the current work provides a facile and effective strategy to recycle PET waste into high-valuable MOF,and further expands the applications of MOF-derived carbons for high-performance energy storage devices,so it is conducive to both pollution alleviation and sustainable economic development.

关键词： PET Recycling Porous carbon Supercapacitor Energy storage

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Intrinsically stretchable light-emitting drawing displays

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npj Flexible Electronics 2024年第1期8卷 949-956页

作者： Jiaxue Zhang Qianying Lu Ming Wu Yuping Sun Shaolei Wang Xiaoliang Wang Ming-Hui Lu Desheng Kong College of Engineering and Applied Sciences National Laboratory of Solid State Microstructureand Collaborative Innovation Center of Advanced MicrostructuresNanjing 210093China Jiangsu Key Laboratory of Artificial Functional Materials Nanjing UniversityNanjing 210023China State Key Laboratory of Analytical Chemistry for Life Science Nanjing UniversityNanjing 210023China Key Laboratory of High Performance Polymer Materials and Technology of Ministry of Education Department of Polymer Science and EngineeringSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

Stretchable displays that combine light-emitting capabilities with mechanical compliance are essential building blocks of nextgeneration wearable ***,their widespread applications are currently limited by complex device architecture,limited pixel density,and immature fabrication *** this study,we present the device design and material developments of intrinsically stretchable light-emitting drawing displays that can show arbitrary hand-drawing *** alternating-current electroluminescent display uses a simplified architecture comprising coplanar interdigitated liquid metal electrodes,an electroluminescent layer,and a dielectric encapsulation *** patterns on the device are coupled with the interdigitated electrodes under alternating voltage stimulations,generating localized electric fields for bright *** inks are prepared for painting,stamping,and stencil *** luminous features on the devices can be either long-lasting or transient in *** skin-like devices are made entirely of compliant materials that can withstand bending,twisting,and stretching *** to the excellent mechanical deformability,the drawing displays can be conformally laminated on the skin as body-integrated optoelectronic communication devices for graphic information.

关键词： light luminous stretching

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Polyamide Composite Membranes on Electrospun Nanofibers for Osmotic Enrichment of Ionic Liquids from Aqueous Solutions

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Chinese Journal of polymer science 2025年第5期43卷 819-827页

作者： Yu-Jie Shang Bian-Bian Guo Hao-Nan Li Yong-Jin Li Jing Yang Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education and Key Laboratory of Organosilicon Material Technology of Zhejiang ProvinceCollege of MaterialChemistry and Chemical EngineeringHangzhou Normal UniversityHangzhou311121China MOE Key Laboratory of Macromolecular Synthesis and Functionalization and Key Laboratory of Adsorption and Separation Materials&Technologies of Zhejiang ProvinceDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou310027China

The recovery of ionic liquids(ILs)has attracted growing attention as an indispensable process in“green”industrial *** osmosis(FO)has proven to be a sustainable method for concentrating the very dilute aqueous solutions of ILs at ambient temperature,in which semi-permeable membranes play a vital role in determining the recovery ***,we use interfacial polymerization method to prepare thin-film composite membranes consisting of polyamide skin layer and electrospun nanofibrous substrate with tunable water permeability and IL selectivity for osmotic enrichment of imidazolium ILs from their dilute aqueous solutions through FO *** resulting FO membrane shows a compact polyamide layer with a thickness of 30-200 nm,guranteeing a high selectivity to ILs and ***,the nanofibrous substrate with large and interconnect pores as well as low tortuosity,providing mechanical and permeable support for the composite *** structure influences the osmotic pressure difference as well as the interactions with polyamide layer of the membrane and thus determines the whole concentration ***,the alkyl chain growth augments the osmosis pressure difference between the ILs solution and draw solution,resulting in an enhancement in driving force of water osmosis and IL ***,alkyl length aggravates external concentration polarization caused by the enhanced adsorption of ILs onto the skin layer via electrostatic and alkyl-π***,such adsorbed ILs further enhance the IL retention but decrease the reverse salt ***,imidazolium ILs with varied alkyl lengths are ultimately enriched with a 100-fold increase in concentration from their dilute aqueous solutions with high IL/NaCl rejection and low IL ***,the final concentration of IL with longest alkyl length reaches the highest(6.4 mol·L^(-1)).This work provides the insights in respect to material preparation and process amelioratio

关键词： Thin-film composite membrane Forward osmosis Ionic liquids Interfacial polymerization Electrospun nanofiber

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Polyethyleneimine-integrated composite sorbents for emerging pollutants remediation in water: Cross-linking strategy and tailored affinity

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Resources chemicals and Materials 2023年第3期2卷 231-244页

作者： Bangwen Yuan Qingda An Zuoyi Xiao Jingai Hao Kairuo Zhu Shangru Zhai Chang-Sik Ha School of Light Industry&Chemical Engineering Dalian Polytechnic UniversityDalian 116034China Department of Polymer Science&Engineering Korea Pusan National UniversityPusan 609735Korea

The removal and enrichment of pollutants in industrial wastewater using efficient adsorption processes have been a hot scientific topic in the field of environmental chemistry and green *** with the progress in the design,synthesis,and performance of polyethyleneimine-modified adsorbent materials at home and abroad,there are few reviews on how to modify polyethyleneimine(PEI)in adsorbent materials through functional group ***,this review attempts to provide a systematic review of how PEI can prepare adsorbent materials by functional group reaction and the adsorption mechanism of inorganic metal ions,phosphates,and dyes in wastewater by *** this basis,future research directions of adsorbent materials are prepared by PEI prospects.

关键词： Integrated function Adsorption materials Polyethyleneimine Mechanism Performance

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