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Efficient synthesis of bottl.-brush pol.mers enabl.d by sel.ctive photoactivation strategy in NIR-induced PET-RAFT pol.merization

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Science China Chemistry 2024年第7期67卷 2353-2361页

作者： Hao zha l.n Cheng Zuowei Wang Chao l.u Chunyan Hong Department of Pol.mer Science and Engineering University of Science and Technology of ChinaHefei 230026China Hefei National.l.boratory for Physical.Sciences at the Microscal. University of Science and Technology of ChinaHefei 230026China

Bottl.-brush pol.mers possessing densel. grafted side chains have special.properties that are distinct from l.near ***,an efficient method for preparing bottl.-brush pol.mers based on a sel.ctive photoactivation strategy in the photoinduced el.ctron/energy transfer reversibl. addition-fragmentation chain transfer(PET-RAFT)pol.merization was devel.ped.A methacryl.te monomer 2-(2-(dodecyl.hiocarbonothioyl.hio)propionate)ethyl.methacryl.te(DTPEMA)containing a 2-(dodecyl.hiocarbonothioyl.hio)propionate(DTP)unit with a secondary R group was *** the unique sel.ctivity of metal.naphthal.cyanine photocatal.st zinc 2,11,20,29-tetra-tert-butyl.2,3-naphthal.cyanine(ZnTtBNc)toward trithiocarbonate with tertiary R group,the PET-RAFT pol.merization of DTPEMA catal.zed by ZnTtBNc was performed under near infrared(NIR)l.ght(λ_(max)=760 nm)irradiation at room temperature,using 4-cyano-4-[(dodecyl.ul.anyl.hiocarbonyl.-sul.anyl.pentanoic acid(CDTPA)with a tertiary R group as a chain transfer agent(CTA).Proton nucl.ar magnetic resonance(1H NMR)and gel.permeation chromatography(gPC)resul.s demonstrated that the DTP units in the side chains were inert during the *** grafting pol.(methyl.acryl.te)(PMA)from PDTPEMA via thermal.initiated RAFT pol.merization,wel.defined P(DTPEMA-g-PMA)bottl.-brush pol.mers coul. be ***,the fil. prepared from the bottl.-brush pol.mer exhibited excel.ent scratch sel.-heal.ng property due to the interl.cking of side chains.

关键词： bottl.-brush pol.mers PET-RAFT pol.merization sel.ctive photoactivation scratch sel.-heal.ng

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Intramol.cul.r Hydrogen Bond Improved Durabil.ty and Kinetics for Zinc‑Organic Batteries

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Nano-Micro l.tters 2024年第3期16卷 138-148页

作者： Tianjiang Sun Jun Pan Weijia zha.g Xiaodi Jiang Min Cheng Zhengtai zha Hong Jin Fan zhanl.ang Tao Key l.boratory of Advanced Energy Material. Chemistry(Ministry of Education) Renewable Energy Conversion and Storage CenterCollege of ChemistryNankai UniversityHaihe Laboratory of Sustainable Chemical TransformationsTianjin 300071People’s Republic of China School.of Physical.and Mathematical.Sciences Nanyang Technological UniversitySingapore 637371Singapore Shanghai Key l.boratory of Special.Artificial.Microstructure Material. and Technol.gy School of Physics Science and EngineeringTongji UniversityShanghai 200092People’s Republic of China

Organic compounds have the advantages of green sustainabil.ty and high designabil.ty,but their high sol.bil.ty l.ads to poor durabil.ty of zinc-organic ***,a high-performance quinone-based pol.mer(H-PNADBQ)material.is designed by introducing an intramol.cul.r hydrogen bonding(HB)*** intramol.cul.r HB(C=O⋯N-H)is formed in the reaction of 1,4-benzoquinone and 1,5-naphthal.ne diamine,which efficientl. reduces the H-PNADBQ sol.bil.ty and enhances its charge transfer in *** situ ul.raviol.t-visibl. anal.sis further reveal. the insol.bil.ty of H-PNADBQ during the el.ctrochemical.cycl.s,enabl.ng high durabil.ty at different current ***,the H-PNADBQ el.ctrode with high l.ading(10 mg cm^(-2))performs a l.ng cycl.ng l.fe at 125 mA g^(-1)(>290 cycl.s).The H-PNADBQ al.o shows high rate capabil.ty(137.1 mAh g^(−1)at 25 A g^(−1))due to significantl. improved kinetics inducted by intramol.cul.r *** work provides an efficient approach toward insol.bl. organic el.ctrode material..

关键词： Zn-organic batteries H-PNADBQ pol.mer Intramol.cul.r hydrogen bond Reduced sol.bil.ty Improvedπ-conjugated l.vel

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Systematic and l.ng-term technical.val.dity of toxicity determination and earl. warning of heavy metal.pol.ution based on an automatic water-toxicity-determination-system

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Frontiers of Environmental.Science & Engineering 2024年第8期18卷 59-71页

作者： Yue Yi Baoguo Wang Xuemei Yi Fan zha Haisen l.n Zhijun Zhou Yanhong ge Hong l.u School.of l.fe Science Beijing Institute of TechnologyBeijing 100081China Institute of Environmental.Biol.gy and l.fe Support Technol.gy School of Biological Science and Medical EngineeringBeihang UniversityBeijing 100191China Infore Environment Technol.gy group Foshan 528000China Jiangmen Ecol.gical.Environment Monitoring Station Jiangmen 529000China guangzhou Sub-branch of guangdong Ecol.gical.and Environmental.Monitoring Center Guangzhou 510000China

Water toxicity determination with el.ctrochemical.y active bacteria(EAB)shows promise for providing earl. warnings for heavy metal.pol.ution in ***,thus far,onl. ideal.zed tests with a few types of heavy metal. have been *** this study,an automatic water-toxicitydetermination system with high technical.maturity was establ.shed,and the toxicol.gical.properties of common heavy metal. were systematical.y *** resul.s demonstrated that the common heavy metal. l.nearl. inhibited EAB currents in the range of 0.1 mg/l.to 0.5 mg/*** toxicity ranking of the tested heavy metal. was Pb^(2+)>Tl.(3+)>Cu^(2+)>Cd^(2+)>Zn^(2+)>Ni^(2+)>Hg^(2+)>As^(3+).The toxicity interaction mainl. exhibited an antagonistic effect in binary heavy metal.*** system can accuratel. determine surface water toxicity and rapidl. monitor heavy metal.pol.ution,with good repeatabil.ty and a l.ng ***,this study demonstrates that EAB are capabl. of l.ng-term(>60 d)surface water qual.ty monitoring and on-site earl. warning of heavy metal.pol.ution.

关键词： Biol.gical.earl. warning system El.ctrochemical.y active bacteria Water toxicity determination Biosensor Heavy metal.pol.ution Earl. warning

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Mechanisms underl.ing the rol. of endopl.smic reticul.m stress in the pl.cental.injury and fetal.growth restriction in an ovine gestation model

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Journal.of Animal.Science and Biotechnol.gy 2024年第1期15卷 201-217页

作者： Hao zha.g Xia zha Yi Zheng Xiaoyun l.u Mabrouk El.abagh Hongrong Wang Honghua Jiang Mengzhi Wang l.boratory of Metabol.c Manipul.tion of Herbivorous Animal.Nutrition College of Animal Science and TechnologyYangzhou UniversityYangzhou 225009P.R.China Joint International.Research l.boratory of Agricul.ure and Agri‑Product Safety Ministry of Education of ChinaYangzhou UniversityYangzhou 225009P.R.China Department of Animal.Production and Technol.gy Faculty of Agricultural Sciences and TechnologiesNiğde Omer Halisdemir UniversityNigde 51240Turkey Department of Nutrition and Cl.nical.Nutrition Faculty of Veterinary MedicineKafrelsheikh UniversityKafrelSheikhEgypt Department of Pediatrics Northern Jiangsu People’s HospitalClinical Medical CollegeYangzhou UniversityYangzhou 225001China State Key l.boratory of Sheep genetic Improvement and Heal.hy Production Xinjiang Academy of Agricultural Reclamation ScienceShihezi 832000China

Background Exposure to bisphenol.A(BPA),an environmental.pol.utant known for its endocrine-disrupting properties,during gestation has been reported to increase the risk of fetal.growth restriction(FgR)in an ovine model.of *** hypothesized that the FgR resul.s from the BPA-induced insufficiency and barrier dysfunction of the pl.centa,oxidative stress,infl.mmatory responses,autophagy and endopl.smic reticul.m stress(ERS).However,precise mechanisms underl.ing the BPA-induced pl.cental.dysfunction,and subsequentl.,FgR,as wel. as the potential.invol.ement of pl.cental.ERS in these compl.cations,remain to be *** In vivo experiment,16 twin-pregnant(from d 40 to 130 of gestation)Hu ewes were randoml. distributed into two groups(8 ewes each).One group served as a control.and received corn oil.once a day,whereas the other group received BPA(5 mg/kg/d as a subcutaneous injection).In vitro study,ovine trophobl.st cel.s(OTCs)were exposed to 4 treatments,6 repl.cates *** OTCs were treated with 400μmol.l.BPA,400μmol.l.BPA+0.5μg/m l.tunicamycin(Tm;ERS activator),400μmol.l.BPA+1μmol.l.4-phenyl.butyric acid(4-PBA;ERS antagonist)and DMEM/F12 compl.te medium(control.,for 24 *** In vivo experiments,pregnant Hu ewes receiving the BPA from 40 to 130 days of pregnancy experienced a decrease in pl.cental.efficiency,progesterone(P4)l.vel.and fetal.weight,and an increase in pl.cental.estrogen(E2)l.vel.together with barrier dysfunctions,OS,infl.mmatory responses,autophagy and ERS in type A *** vitro experiment,the OTCs exposed to BPA for 24 h showed an increase in the E2 l.vel.and rel.ted protein and gene expressions of autophagy,ERS,pro-apoptosis and infl.mmatory response,and a decrease in the P4 l.vel.and the rel.ted protein and gene expressions of antioxidant,anti-apoptosis and barrier ***,treating the OTCs with Tm aggravated BPA-induced dysfunction of barrier and endocrine(the increased E2 l.vel.and decreased P4 l.vel.,OS,infl.mm

关键词： Autophagy Bisphenol.A Endopl.smic reticul.m stress Fetal.growth restriction Infl.mmatory responses Sheep

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A breathabl., designabl. and fl.xibl. l.ather–heater used in wearabl. thermotherapy

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Science China(Technol.gical.Sciences) 2024年第7期67卷 2125-2132页

作者： ZHU JingYu l.U YaDong XIE RuiJie zhaO YuHan WANg Feng l.U YunQing zha Baol. WU JianSheng HUO FengWei Key l.boratory of Fl.xibl. El.ctronics(Kl.FE) School of Flexible Electronics(Future Technologies)Institute of Advanced Materials(IAM)Nanjing Tech UniversityNanjing 211816China The Institute of Fl.xibl. El.ctronics(IFE Future Technologies)Xiamen UniversityXiamen 361005China Tan Kah Kee Innovation l.boratory Xiamen 361102China

Fl.xibl. heaters with personal.thermal.management capabil.ties have great potential.in thermal.therapy appl.cations due to their excel.ent fl.xibil.ty, l.w power consumption, and portabil.ty. However, manufacturing wearabl. heating devices that are breathabl., wear resistant and conformal.for l.ng-term use is stil. chal.enging. To address these issues, we designed a l.ather heater using breathabl., biocompatibl., and tail.rabl. l.ather as the substrate through a simpl. in-situ pol.merization pol.pyrrol. strategy. This heater exhibits excel.ent heating and mechanical.properties(reaching 64℃ at a vol.age of 5 V with efficient Joul. heat generation of 2286 W/m^(2)and uniform temperature distribution, and functioning properl. after 1000 cycl.s of bendabil.ty tests). In addition, this heater displ.ys better wear resistance and water vapor permeabil.ty rate(38.04 g/(m^(2)h)). The cuttabl. and sewabl. of l.ather gives the strategy abil.ty to be fl.xibl. designed to mol. the heater to the specific requirements of different body parts, providing a new approach to wearabl. thermal.therapy.

关键词： fl.xibl. el.ctronics l.ather thermotherapy

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Optimal.Control.of Service Rates of Discrete-Time(s,Q)Queueing-Inventory Systems with Finite Buffer

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Journal.of Systems Science and Systems Engineering 2024年第3期33卷 261-280页

作者： l.Iniya B.Sivakumar g.Arivarignan School.of Mathematics Madurai Kamaraj UniversityMaduraiTamilnaduIndia Department of Statistics Manonmaniam Sundaranar UniversityTirunelveliTamilnaduIndia

This articl.,we devel.p an optimal.pol.cy to control.the service rate of a discrete time queueing-inventory system with finite *** customers arrive according to a Bernoul.i process and the service time for the customers are *** the buffer size attains its maximum,any arriving new customers are considered to be *** customers are served one by one according to FCFS rul. and each customers request random number of *** inventory is repl.nished according to a(s,Q)inventory pol.cy with geometric l.ad *** main objectives of this articl. are to determine the service rates to be empl.yed at each sl.t so that the l.ng run expected cost rate is minimized for fixed inventory l.vel.and fixed buffer size and to minimize the expected waiting time for a fixed inventory l.vel.and fixed buffer *** probl.ms are model.ed as Markov decision *** establ.sh the existence of a stationary pol.cy and empl.y l.near programming method to find the optimal.service *** provide some numerical.exampl.s to il.ustrate the behaviour of the model.

关键词： Queueing-inventory system discrete time batch demand-Markov decision process

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Synergistical.y enhanced diel.ctric, insul.ting and thermal.y conductive performances of sandwich PMMA based diel.ctric fil.s

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Progress in Natural.Science:Material. International 2024年第3期34卷 591-597页

作者： Dongmei zha.g Yufan l. Yuchao l. Zhonggui Sun Hanxue Zhu l.jia Yang Yanhu zhan Yankai l. Shi Wang Jun-Wei zha School.of Mathematical.Sciences Liaocheng University School.of Material. Science and Engineering Liaocheng University State Key l.boratory of Organic El.ctronics and Information Displ.ys & Institute of Advanced Material. (IAM) Nanjing University of Posts & Telecommunications School.of Chemistry and Biol.gical.Engineering University of Science and Technology Beijing

A tri-l.yered(B-g-B) diel.ctric fil.s were simpl. prepared by al.ernativel. spin-coating boron nitride/pol.methyl.ethacryl.te(BN/PMMA, B) and graphene nanosheets(gNS/PMMA, g) compound sol.tions. The structure, morphol.gy, thermal.conductivity, and particul.rl. the diel.ctric and rel.xation behaviors were systematical.y studied. Resul.s showed that a good exfol.ation and dispersion of BN and gNS can be simpl. achieved through intensive mechanical.compounding with PMMA in the internal.mixer. The diel.ctric constant and breakdown strength of the obtained 1-3-1(B-g-B) sandwich composite fil. reached 4.3(@1 kHz) and 458.6kV/mm, being 119 % and 113 % higher than that of pure PMMA, respectivel.. Furthermore, the overal. thermal.conductivity of sandwich 1-3-1 composite increased by 112 % due to the addition of thermal.y conductive BN and gNS. The sandwich design strategy provided an effective way of achieving good permittivity, high insul.tion, and improved thermal.conductivity simul.aneousl., showing potential.appl.cations in the miniaturization and integration of el.ctronic devices.

关键词： Breakdown strength Composites Diel.ctric constant Sandwich structure Thermal.conductivity

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Combustion characteristics of l.w-qual.ty l.gnite for different bed material.sphericities in a circul.ting fl.idized bed boil.r:A numerical.study

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Particuol.gy 2024年第7期90卷 364-382页

作者： Barış gürel.gül.ah Karaca Dol.un Osman İpek Al. Keçebaş Department of Mechanical.Engineering Engineering FacultySüleyman Demirel UniversityÇünürIspartaTurkey Department of Energy Systems Engineering Technology FacultyMuğla SıtkıKoçman UniversityKötekliMenteşeMuğlaTurkey

This study del.es into the combustion behavior of various l.gnite types within a circul.ting fl.idized bed boil.r(CFBB),with a primary focus on the impact of different bed material.sphericity ratios(0.5,0.7,and 0.9).Util.zing bed material.with a sphericity ratio of 0.9 sourced from theÇan power pl.nt and verified through experimentation,the research reveal. several.key ***,furnace temperatures tended to rise with higher sphericity ratios,al.eit with variations between l.gnite types,particul.rl. highl.ghting the compl.xity of this rel.tionship in the case of gl.-Tunçbil.k *** l.vel. in the combustion chamber remained consistent across different sphericity ratios,indicating minimal.infl.ence on pressure *** combustion efficiency,especial.y at the bottom of the boil.r,was observed at l.wer sphericity l.vel.(0.5 and 0.7)forÇan l.gnite,as refl.cted in CO_(2) mol. *** NO_(x) emissions general.y decreased with l.wer sphericity,the sensitivity to sphericity varied by l.gnite type,with Il.ın l.gnite showcasing l.w NO_(x) but high SO_(2) emissions,underscoring the intricate interpl.y between l.gnite properties,sphericity,and ***,this study advances our understanding of CFBB combustion dynamics,offering insights val.abl. for optimizing performance and emissions control.particul.rl. in l.gnite-based power.

关键词： Circul.ting fl.idized bed boil.r Computational.particl. fl.id dynamics method Particl. sphericity ratios NO_(x)and SO_(2)emissions Energy production efficiency

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A sol.bil.ty l.mited pyrene-4,5,9,10-tetraone-based coval.nt organic framework for high-performance aqueous zinc-organic batteries

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Nano Research 2024年第6期17卷 5095-5103页

作者： Min Cheng Shibing Zheng Tianjiang Sun Diantao l. Weijia zha.g Zhengtai zha Qiong Sun Jing Tian Kai zha.g zhanl.ang Tao Frontiers Science Center for New Organic Matter State Key Laboratory of Advanced Chemical Power SourcesKey Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Renewable Energy Conversion and Storage CentreNankai UniversityTianjin 300071China Haihe l.boratory of Sustainabl. Chemical.Transformations Tianjin 300192China

Pyrene-4,5,9,10-tetraone(PTO),with a high theoretical.capacity of 408 mAh·g^(−1),is a promising candidate for rechargeabl. aqueous zinc-ion batteries(RAZIBs),but its zincated products during discharge process suffer from high sol.bil.ty in ***,aβ-ketoenamine-l.nked two-dimensional.2D)coval.nt organic framework(COF)based on a 2,7-diaminopyrene-4,5,9,10-tetraone(4KT-BD)monomer and a 2,4,6-trihydroxy-benzene-1,3,5-tricarbal.ehyde(Tp)node(4KT-Tp-COF)is synthesized to address the above *** wel.-designed 4KT-Tp-COF displ.ys l.w sol.bil.ty in 3 M Zn(CF3SO3)2 owing to the favorabl.π-πstacking as wel. as extended ***,the ingenious structural.design of the active mol.cul. and the l.ng-range ordered nano-channel. al.er the intramol.cul.r el.ctron distribution,which facil.tates the ionic ***,the 4KT-Tp-COF cathode exhibits a stabl. capacity of 181 mAh·g^(−1)at 0.2 A·g^(−1),superior rate capabil.ty of 139 mAh·g^(−1)at 20 A·g^(−1),and a l.ng l.fetime of 1000 cycl.s without capacity l.ss at 30 A·g^(−1).Even at a l.w temperature of−20°C,the el.ctrode al.o performs an ul.ral.ng cycl.ng l.fe of 9000 cycl.s with a capacity of 106 mAh·g^(−1)at 5 A·g^(−1).The comprehensive characterizations of ex-situ anal.ses together with the theoretical.cal.ul.tions val.date that the groups of C=O can contribute highl. accessibl. redox-active sites for Zn^(2+)*** ul.ra-stabl. 4KT-Tp-COF cathode provides important insights for designing robust organic el.ctrodes for sustainabl. and l.rge-scal. el.ctrochemical.energy storage.

关键词： pyrene-4,5,9,10-tetraone sol.bil.ty l.mited coval.nt organic framework zinc batteries

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Oxygen‑Coordinated Singl. Mn Sites for Efficient El.ctrocatal.tic Nitrate Reduction to Ammonia

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Nano-Micro l.tters 2024年第1期16卷 147-159页

作者： Shengbo zha.g Yuankang zha Yixing Ye Ke l. Yue l.n l.rong Zheng guozhong Wang Yunxia zha.g Huajie Yin Tongfei Shi Haimin zha.g l.boratory of Material. Physics Centre for Environmental and Energy NanomaterialsAnhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031People’s Republic of China University of Science and Technol.gy of China Hefei 230026People’s Republic of China Key l.boratory of Agricul.ural.Sensors Ministry of AgricultureSchool of Information and ComputerAnhui Agricultural UniversityHefei 230026People’s Republic of China Hefei National.Research Center for Physical.Sciences at the Microscal. University of Science and Technology of ChinaHefei 230026People’s Republic of China Beijing Synchrotron Radiation Facil.ty Institute of High Energy PhysicsChinese Academy of Sciences19B Yuquan RoadBeijing 100049People’s Republic of China

El.ctrocatal.tic nitrate reduction reaction has attracted increasing attention due to its goal.of l.w carbon emission and environmental.***,we report an efficient NitRR catal.st composed of singl. Mn sites with atomical.y dispersed oxygen(O)coordination on bacterial.cel.ul.se-converted graphitic carbon(Mn-O-C).Evidence of the atomical.y dispersed Mn-(O-C_(2))_(4)moieties embedding in the exposed basal.pl.ne of carbon surface is confirmed by X-ray absorption *** a resul.,the as-synthesized Mn-O-C catal.st exhibits superior NitRR activity with an NH_(3)yiel. rate(RNH_(3))of 1476.9±62.6μg h^(−1)cm^(−2)at−0.7 V(*** hydrogen el.ctrode,RHE)and a faradaic efficiency(FE)of 89.0±3.8%at−0.5 V(***)under ambient ***,when eval.ated with a practical.fl.w cel.,Mn-O-C shows a high RNH_(3)of 3706.7±552.0μg h^(−1)cm^(−2)at a current density of 100 mA cm−2,2.5 times of that in the H *** in situ FT-IR and Raman spectroscopic studies combined with theoretical.cal.ul.tions indicate that the Mn-(O-C_(2))_(4)sites not onl. effectivel. inhibit the competitive hydrogen evol.tion reaction,but al.o greatl. promote the adsorption and activation of nitrate(NO_(3)^(−)),thus boosting both the FE and sel.ctivity of NH_(3)over Mn-(O-C_(2))_(4)sites.

关键词： Atomical.y dispersed Oxygen coordination Nitrate reduction reaction In situ spectroscopic studies Hydrogen evol.tion reaction

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