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Study on catalytic Behavior of Iron-based catalyst with IITP as Electron Donor in the Polym.rization of Butadiene

chinese Journal of Polym.r Science 2024年第5期42卷 612-619,I0007页

作者： Shi-Liang Xu Ying-nan Zhao Yao Yu Qi Yang Li-Hua na Heng Liu chun-Yu Zhang Xue-Quan Zhang Key Laboratory of Advanced Rubber m.terial Ministry of EducationSchool of Polymer Science and EngineeringQingdao University of Science&TechnologyQingdao266042China Shandong Provincial college Laboratory of Rubber m.terial and Engineering School of Polymer Science and EngineeringQingdao University of Science&TechnologyQingdao266042China Key Lab of Rubber-Plastics Ministry of Education/Shandong Provincial Key Lab of Rubber-plasticsSchool of Polymer Science and EngineeringQingdao University of Science&TechnologyQingdao266042China

In this study,a novel iron-based catalyst system.Fe(acac)3/(isocyanoim.no)triptenylphosphorane(IITP)/AlR3,was em.loyed for the synthesis of syndiotactic 1,2-polybutadiene in *** catalyst system.exhibits rem.rkably high catalytic activity,achieving a polym.rization activity of 762 kgpolym.r·m.lcatalyst^(-1)·h^(-1)at 50℃with a[BD]/[Fe]m.lar ratio of ***,living polym.rization characteristic were observed during the investigation of the polym.rization kinetics of 1,3-butadiene *** characteristics were well dem.nstrated by a narrow m.lecular weight distribution(PDI≈2.0)of the resulting polybutadiene and a linear relationship between-ln(1-c)and polym.rization tim. as well as num.er average m.lecular weight and polym.r *** resultant polym.r showed a 1,2-selectivity of approxim.tely 76%and stereoregularity ranging from.62%to 73%(rrrr).Additionally,through kinetic studies on polym.rization reaction,an apparent activation energy Ea value of this catalytic system.was calculated to be 84.98 kJ·m.l^(-1),which suggests that high polym.rization tem.erature favors efficient polym.rization.

关键词： Iron catalyst Syndiotactic 1,2-polybutadiene Elastom.rs Donor Selectivity

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Recent Advances in nanoengineering of Electrode-Electrolyte Interfaces to Realize High-Perform.nce Li-Ion Batteries

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Energy & Environm.ntal m.terials 2024年第3期7卷 1-13页

作者： na-Yeong Kim.Ilgyu Kim.Behnoosh Bornam.hr Volker Presser Hiroyuki Ueda Ho-Jin Lee Jun Young cheong Ji-Won Jung School of m.terials Science and Engineering University of UlsanTechno saneop-ro 55 beon-gilNam-guUlsan 44776Korea INm.Leibniz Institute for New m.terials Campus D2266123Saarbrücken Germany Departm.nt of m.terials Science and Engineering Campus D2266123Saarbrücken Germany saarene-Saarland center for Energy m.terials and Sustainability Campus C4266123Saarbrücken Germany Institute for Frontier m.terials(IFm. Deakin University221 Burwood HighwayBurwood Victoria 3125Australia Battery Research and Innovation Hub Deakin University5/154 Highbury RoadBurwood Victoria 3125Australia Bavarian center for Battery Technology(BayBatt)and Departm.nt of chem.stry University of BayreuthUniversitatsstraBe 3095447Bayreuth Germany

A suitable interface between the electrode and electrolyte is crucial in achieving highly stable electrochem.cal perform.nce for Li-ion batteries,as facile ionic transport is *** research and developm.nt have recently been conducted to form.a stable interface between the electrode and ***,it is essential to investigate em.rging knowledge and contextualize *** nanoengineering of the electrode-electrolyte interface has been actively researched at the electrode/electrolyte and interphase *** review presents and sum.arizes som. recent advances aim.d at nanoengineering approaches to build a m.re stable electrode-electrolyte interface and assess the im.act of each approach ***,future perspectives on the feasibility and practicality of each approach will also be reviewed in ***,this review aids in projecting a m.re sustainable research pathway for a nanoengineered interphase design between electrode and electrolyte,which is pivotal for high-perform.nce,therm.lly stable Li-ion batteries.

关键词： battery electrode electrolyte interface lithium nanoengineering

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crystal structure and lum.nescence dynam.cs of highly pure Lim.PO_(3))_(3):Eu^(3+)(m.Sr,ca) red phosphors for white light em.tting diodes

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Journal of Rare Earths 2024年第8期42卷 1470-1478,I0002页

作者： Payal Khajuria m.m.nhas A.K.Bedyal Ankush Vij H.c.Swart Vinay Kum.r Departm.nt of Physics and Astronom.cal Sciences Central University of JammuRahy-Suchani.Samba1143J&KIndia Departm.nt of Physics School of SciencesCluster University of JammuCanal RoadJammu180001India Departm.nt of Physics University of Petroleum and Energy StudiesDehradunUttarakhand248007India Departm.nt of Physics University of the Free StateP.O.Box 339BloemfonteinZA 9300South Africa

Highly pure red phosphors Lim.PO_(3))_(3):Eu^(3+)(m.Sr,ca) doped with Eu^(3+)(1 m.l%) were synthesized via solution com.ustion m.thod and their crystal structure and lum.nescence dynam.cs were studied to explore its suitability in white light em.tting *** Rietveld refinem.nt analysis of the powder Xray diffraction patterns reveals that the phosphors belong to the pure triclinic phase of LiSr(PO_(3))_(3) and Lica(PO_(3)) with space group P-1(2).The scanning electron m.croscopy im.ges showed the agglom.rated *** photolum.nescence em.ssion spectra under 393 nm.show an orange band at 594 nm.and a red band at 613 nm.ascribed to ^(5)D_(0)→^(7)F_(1).^(5)D_(0)→^(7)F_(2) transitions of Eu^(3+)ion in both the ***,the spectroscopic properties such as lum.nescence behaviour,and Stark splitting were used to exam.ne the sym.etry of Eu^(3+)ions in Lim.PO_(3))_(3):Es^(3+)(m.Sr,ca) phosphors in term. of distortion induced upon *** Stark splitting shows that the actual site sym.etry for Eu^(3+)ion was estim.ted to be D_(2) type for both *** photom.tric properties of Lica(PO_(3))_(3):Eu^(3+)such as com.ission International de l'Eclairage coordinates(x=0.64,y=0.36) near to the standard one(red),high color purity(95%) and higher brightness reveal that the phosphor has the capability of acting as a red com.onent in n-UV white light em.tting diodes.

关键词： Photolum.nescence Phosphate WLEDs Stark splitting Rare earths

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Unconventional Fluorescent and m.lti-responsive Polyethyleneim.ne with LcST and UcST Behavior:Synthesis,characterization and Biological Applications

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chinese Journal of Polym.r Science 2024年第6期42卷 826-837页

作者： Feng-m.ng Yin Li-Li Wu Shu-Sheng Li Xiao-na Pan Xiao-Li Zhu Xu-Bao Jiang Xiang Zheng Kong college of chem.stry and chem.cal Engineering University of JinanJinan250022China Shandong Institute for Product Quality Inspection Jinan250102China college of chem.cal Engineering Tianjin UniversityTianjin300072China

Non-arom.tic fluorescent and m.lti-responsive m.terials,exhibiting inherent fluorescence em.ssion and controlled phase change,have garnered significant attention in recent ***,the underlying interaction between their fluorescent properties and phase transition rem.ins *** this study,we synthesized a series of catalyst-free aza-m.chael addition-based polyethyleneim.ne(RFPEI)m.terials by reacting polyethyleneim.ne(PEI)with N-isopropyl acrylam.de(NIPAm..The resulting RFPEI was com.rehensively characterized,and dem.nstrated dual-phase transition behavior(LcST and UcST)in water,which could be finely tuned by adjusting its com.osition or external factors such as ***,upon UV irradiation(365 nm.,RFPEI exhibited strong fluorescence *** further investigated the effects of NIPAm.grafting percentage to PEI,polym.r concentration,and pH on the LcST/UcST and fluorescent properties of RFPEI aqueous ***,we showcased the great potential of RFPEI as a versatile tool for physiological cell im.ging,trace detection,and controlled release of *** study presents a novel class of stim.li-responsive fluorescent m.terials with prom.sing applications in the field of biom.dicine.

关键词： Polyethyleneim.ne m.lti-responsiveness Intrinsic fluorescence em.ssion cell im.ging controlled drug release

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confluence of ZnO and PTFE Binder for Enhancing Perform.nce of Thin-Film.Lithium.Ion Batteries

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Energy & Environm.ntal m.terials 2024年第5期7卷 52-60页

作者： Subhashree Behera Swathi Ippili Venkatraju jella na-Yeong Kim.Seong cheol Jang Ji-Won Jung Soon-Gil Yoon Hyun-Suk Kim Departm.nt of m.terials Science and Engineering Chungnam National University School of m.terials Science and Engineering University of Ulsan Departm.nt of Energy and m.terials Engineering Dongguk University

Developing anode m.terials with high specific capacity and cycling stability is vital for im.roving thin-film.lithium.ion batteries. Thin-film.zinc oxide （ZnO）holds prom.se due to its high specific capacity, but it suffers from.volum. changes and structural stress during cycling, leading to poor battery perform.nce. In this research, we ingeniously com.ined polytetrafluoroethylene （PTFE） with ZnO using a radio frequency （RF）m.gnetron co-sputtering m.thod, ensuring a strong bond in the thin-film.com.osite electrode. PTFE effectively reduced stress on the active m.terial and m.tigated volum. change effects during Li+ion intercalation and deintercalation. The com.osite thin film. are thoroughly characterized using advanced techniques such as X-ray diffraction, scanning electron m.croscopy,and X-ray photoelectron spectroscopy for investigating correlations between m.terial properties and electrochem.cal behaviors. Notably, the ZnO/PTFE thin-film.electrode dem.nstrated an im.ressive specific capacity of1305 m.h g-1(=7116 m.h cm.3) at a 0.5c rate and a rem.rkable capacity retention of 82%from.the 1st to the 100th cycle, surpassing the bare ZnO thin film.（50%）. This study provides valuable insights into using binders to stabilize active m.terials in thin-film.batteries, enhancing battery perform.nce.

关键词： li-ion batteries m.tal oxides anodes polytetrafluoroethylene (PTFE) thin film.

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Rna m.A dynam.c m.dification m.diated by nucleuslocalized FTO is involved in follicular reserve

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Zoological Research 2024年第2期45卷 415-428页

作者： Jiao-na Zhang Rui-Ting Wang Francesca-Gioia Klinger Shun-Feng cheng Wei Shen Xiao-Feng Sun college of Life Sciences Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of ShandongQingdao Agricultural UniversityQingdaoShandong 266109China Departm.nt of Biom.dicine and Prevention University of Rome Tor VergataRome 00133Italy

In eukaryotic organism.,the m.st com.on internal m.dification of m.ssenger Rna(m.Rna)is N6-m.thyladenosine(m.A).This m.dification can be dynam.cally and reversibly controlled by specific enzym.s known as m.A writers and *** fat-m.ss and obesity-associated protein(FTO)catalyzes Rna dem.thylation and plays a critical role in various physiological and pathological *** research identified dynam.c alterations in both m.A and FTO during the assem.ly of prim.rdial follicles,with an inverse relationship observed for m.A levels and nuclear-localized FTO *** of Fto sm.ll interfering Rna(si Rna)altered the expression of genes related to cell proliferation,horm.ne regulation,and cell chem.taxis,and affected Rna alternative *** of the full-length Fto gene led to changes in m.A levels,alternative splicing of cdk5,cell proliferation,cell cycle progression,and proportion of prim.rdial ***,overexpression of Fto lacking a nuclear localization signal(NLS)did not significantly alter m.A levels or prim.rdial follicle *** findings suggest that FTO,localized in the nucleus but not in the cytoplasm.regulates Rna m.A dem.thylation and plays a role in cell proliferation,cell cycle progression,and prim.rdial follicle *** results highlight the potential of m.A and its eraser FTO as possible biom.rkers and therapeutic targets.

关键词： m.A FTO Ovary Prim.rdial follicle assem.ly Alternative splicing

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Fate of organophosphate esters from.the Northwestern Pacific to the Southern Ocean:Occurrence,distribution,and fugacity m.del sim.lation

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Journal of Environm.ntal Sciences 2024年第3期137卷 347-357页

作者： Tengda Shi Ruijing Li Jie Fu chao Hou Hui Gao Guanjie cheng Haibo Zhang Shuaichen Jin Liang Kong Guangshui na college of m.rine Technology and Environm.nt Dalian Ocean UniversityDalian 116023China Laboratory for coastal m.rine eco-environm.nt process and carbon sink of Hainan province/Yazhou Bay Innovation Institute Hainan Tropical Ocean UniversitySanya 572022China national m.rine Environm.ntal m.nitoring center Dalian 116023China college of m.rine Ecology and Environm.nt Shanghai Ocean UniversityShanghai 201306China NcS Testing Technology co. Ltd.Beijing 10081China

Eleven organophosphate esters(OPEs)in the air and seawater were investigated from.the northwestern Pacific Ocean to the Southern Ocean during the 2018 chinese 34th Antarctic Scientific *** concentration of total OPEs ranged from.164.82 to 3501.79 pg/m.3in air and from.4.54 to 70.09 ng/L in *** halogenated OPEs,tri(chloropropyl)phosphate(TcPP)and tri(2-chloroethyl)phosphate(TcEP),were generally m.re abundant than the non-halogenated OPEs.A levelⅢfugacity m.del was developed to sim.late the transfer and fate of seven OPEs in the air and seawater regions of the central Ross *** m.del results indicate that OPEs are transferred from.the air to the seawater in the central Ross Sea in sum.er,during which the Ross Sea acts as a final OPE *** and wet deposition dom.nated the processes involving OPE transfer to *** OPE degradation process was also found to be m.re pervasive in the atm.sphere than in the seawater *** findings highlights the im.ortance of long-range transport of OPEs and their air–seawater interface behavior in the Antarctic.

关键词： Organophosphate esters(OPEs) Long-range transport Fugacity m.del Antarctic Fate

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Volum.tric and viscom.tric properties of aqueous 1,2-dim.thylethylenediam.ne solution for carbon capture application

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Petroleum 2024年第2期10卷 326-337页

作者： Hossein Haghani Teerawat Sem. Pipat na Ranong Thanthip Kiattinirachara Benjapon chalerm.insuwan Hongxia Gao Zhiwu Liang Paitoon Tontiwachwuthikul Departm.nt of chem.cal Technology Faculty of ScienceChulalongkorn UniversityBangkok10330Thailand center of Excellence on Petrochem.cal and m.terials Technology Chulalongkorn UniversityBangkok10330Thailand Departm.nt of chem.cal Engineering Faculty of EngineeringMahidol UniversityNakhon Pathom73170Thailand Joint International center for cO_(2)capture and Storage(iccS) Provincial Hunan Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing CO_(2)EmissionsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha410082PR China clean Energy Technologies Research Institute(cETRi) Faculty of Engineering and Applied ScienceUniversity of ReginaSKS4S0A2Canada

The present work investigates the volum.tric and viscom.tric properties of an aqueous solution of 1,2-dim.thylethylenediam.ne(DEEDA)over an entire concentration range and an absorber operating tem.erature range of 313.15K-333.15K at atm.spheric *** investigated volum.tric properties included the density,excess m.lar volum.,partial m.lar volum.,and the investigated viscom.tric properties included the viscosity,viscosity deviation,free energy for activation of viscous flow,excess free energy for activation of viscous flow,and excess entropy for activation of viscous *** results indicated that there are strong interm.lecular interactions and suitable m.lecular packing in the binary DEEDA-water ***,the m.xture was found to deviate from.a real m.xture according to the calculated excess *** DEEDA solvent's prelim.nary volum.tric and viscom.tric properties revealed convincing potential as a novel am.ne for carbon ***,the Redlich-Kister-based correlations showed favorable correlative perform.nce for excess m.lar volum.,viscosity deviation,and excess entropy for activation of viscous flow.

关键词： Density Viscosity Excess property Am.ne carbon capture

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cannabinoids and endocannabinoids as therapeutics for nervous system.disorders:preclinical m.dels and clinical studies

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Neural Regeneration Research 2024年第4期19卷 788-799页

作者： R.Scott Duncan Sean m.Riordan m.tthew c.Gernon Peter Koulen Departm.nt of Ophthalm.logy School of MedicineUniversity of Missouri Departm.nt of Biom.dical Sciences School of MedicineUniversity of Missouri

cannabinoids are lipophilic substances derived from.cannabis sativa that can exert a variety of effects in the hum.n *** have been studied in cellular and anim.l m.dels as well as in hum.n clinical trials for their therapeutic benefits in several hum.n *** of these include central nervous system.cNS)diseases and dysfunctions such as form. of epilepsy,m.ltiple sclerosis,Parkinson’s disease,pain and neuropsychiatric *** addition,the endogenously produced cannabinoid lipids,endocannabinoids,are critical for norm.l cNS function,and if controlled or m.dified,m.y represent an additional therapeutic avenue for cNS *** review discusses in vitro cellular,ex vivo tissue and in vivo anim.l m.del studies on cannabinoids and their utility as therapeutics in m.ltiple cNS *** addition,the review provides an overview on the use of cannabinoids in hum.n clinical trials for a variety of cNS *** and endocannabinoids hold prom.se for use as disease m.difiers and therapeutic agents for the prevention or treatm.nt of neurodegenerative diseases and neurological disorders.

关键词： anandam.de cannabidiol cannabinoid endocannabinoid epilepsy m.ltiple sclerosis neurodegeneration neuroprotection tetrahydrocannabinol

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Photoinduced copper-catalyzed alkoxyl radical-triggered ring-expansion/am.nocarbonylation cascade

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chinese chem.cal Letters 2024年第6期35卷 331-336页

作者： Jing-Qi Tao Shuai Liu Tian-Yu Zhang Hong Xin Xu Yang Xin-Hua Duan Li-na Guo Departm.nt of chem.stry School of ChemistryXi’an Key Laboratory of Sustainable Energy Material Chemistry and Engineering Research Center of Energy Storage Materials and DevicesMinistry of EducationXi’an Jiaotong UniversityXi’an 710049China School of Electrical Engineering Xi’an Jiaotong UniversityXi’an 710049China State Key Laboratory of Applied Organic chem.stry Lanzhou UniversityLanzhou 730000China

A photoinduced copper-catalyzed alkoxyl triggered c-c bond cleavage/am.nocarbonylation cascade is *** adjusting the structure of alkoxyl radical precursors,functionalized lactones and ketoam.des were synthesized with good yields and excellent functional group tolerance under redox-neutral ***,this protocol enables the integration of lactone fragm.nts with m.ny am.ne drugs and drug fragm.nts.

关键词： copper catalysis Ring-expansion Am.nocarbonylatioin m.crolactones Keto-am.des

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