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Nuclear Science and Techniques 2017年第12期28卷 279-287页

作者： Bao-Jun Cai lie-Wen chen School of Physics and Astronomy and Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai Jiao Tong UniversityShanghai 200240China

Within the nonlinear relativistic mean field(NLRMF) model, we show that both the pressure of symmetric nuclear matter at supra-saturation densities and the maximum mass of neutron stars are sensitive to the skewness coefficient, J_0, of symmetric nuclear matter. Using experimental constraints on the pressure of symmetric nuclear matter at supra-saturation densities from flow data in heavy-ion collisions and the astrophysical observation of a large mass neutron star PSR J0348+0432, with the former favoring a smaller J_0 while the latter favors a larger J_0, we extract a constraint of -494 MeV≤J_0≤-10 MeV based on the NL-RMF model. This constraint is compared with the results obtained in other analyses.

关键词： Equation of state of nuclear matter Heavy-ion collisions Neutron stars

Novel Donor-Acceptor Copolymers Based on Dithienosilole and Ketone Modified Thieno[3,4-b]thiophene for Photovoltaic Application

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Chinese Journal of Chemistry 2013年第11期31卷 1455-1462页

作者： lie chen Shujiao Cai Xianbo Wang Yiwang chen lnstitute of Polymers/Department of Chemist~ Nanchang University Nanchang Jiangxi 330031 China jiangxi Provincial Key Laboratory of New Energy Chemistry Nanchang University Nanchang Jiangxi 330031 China

Two novel donor-acceptor （D-A） copolymers containing dithienosilole （DTS） donor unit and ketone modified thieno[3,4-b]thiophene （TT） acceptor unit, namely, poly{4,4＇-bis（2-ethylhexyl）dithieno[3,2-b：2＇,Y-d]silole-5,5＇-diyl- alt-l-（thieno[3,4-b]thiophen-2-yl）-2-ethylhexan-l-one} （PDTSTT） and poly{4,4＇-bis（2-ethylhexyl）dithieno[3,2- b：2＇,3＇-d]silole-5,5＇-diyl-alt- 1-（4,6-bis（4-ethylhexylthien-2-yl）thieno[3,4-b]thiophen-2-yl）-2-ethylhexan- 1-one} （PD- TSDTTT）, were synthesized for the application in polymer solar cells （PSCs）, and the effects of thiophene bridge on the structural geometry and photovoiltaie performance have been investigated. The polymer PDTSTT and PDTSDTTT have the electrochemical bandgaps of 1.54 and 2.02 eV, together with low-lying HOMO energy levels of-5.47 and -5.37 eV, respectively. Molecular geometry simulation result shows that compared with PDTSTT, the insertion of thiophene bridge in PDTSDTTT can well relieve the steric hindrance between the TT and DTS unit, as confirmed by the reduced dihedral angle between DTS and DTTT unit. Under the illumination of AM 1.5G, 100 mW/cm2, the PSC based on PDTSDTTT/PC61BM （1 ： 1, w ： w） demonstrates a power conversion efficiency of 1.0%, which is significantly improved in comparison with the device based on PDTSTT/PC61BM （1 ： 2, w ： w） under the same experimental condition. This is because the enhanced planarity and increased effective conjugation of the main chain in PDTSDTTT promote the more favorable morphology for charge transportation, although PDTSTT possesses the broader absorption band than PDTSDTTT.

关键词： donor-acceptor copolymer molecular geometry photovoltaics

Alternating Terpolymers Based on Tunable Bi-donors with Manipulating Energy Levels and Molecular Geometry

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Chemical Research in Chinese Universities 2017年第2期33卷 305-311页

作者： chen Zhenzhu YANG Jia WU Feiyan chen lie chen Yiwang College of Chemistry Institute of Polymers Nanchang University Nanchang 330031 P. R. China Jiangxi Provincial Key Laboratory of New Energy Chemistry Nanchang University Nanchang 330031 P. R. China

Three novel regular acceptor-donorl-acceptor-donor2（A-D1-A-D2） terpolymers were prepared via em-bedding a second donor（D2） unit into the traditional D-A backbone to manipulate the energy levels and moleculargeometry with no complex synthesis or solubility loss. In these A-D1-A-D2 terpolymers, benzodithiophene（BDT, D1）and diketopyrrolopyrrole（DPP, A） were selected as the basic skeleton, and the dithienopyrrole（DTPy）, carbazole（CZ）and fluorine（FL） units with different electron donating ability were chosen as the second donor trait（D2）. The HOMOenergy levels can be effectively modulated by only varying D2 unit because of the push-pull interaction between do-nor and acceptor units. Versus the D-A bipolymer PDPP-BDT, incorporation of the D2 unit into the copolymers candistinctly lower the highest occupied molecular orbital（HOMO） levels to -5.47 eV for PDDPP-BDT-DTPy, -5.38 eVfor PDDPP-BDT-CZ and -5.23 eV for PDDPP-BDT-FL, which shows the strong dependence on electron-donatingability. Density functional theory（DFT） simulation and X-ray diffraction（XRD） measurements also reveal the effectof the D2 units on the molecular geometry of the terpolymers and their molecular packing. Notably, aPDDPP-BDT-DTPy combined with a thiophene ring and forked tail pendant away from the backbone had less back-bone torsion and more compact packing than the other two counterparts. These results demonstrate that embedding asecond donor（D2） unit into the backbone to construct an A-D1-A-D2 structure can be an effective and direct strategyto manipulate the energy levels and molecular geometry and develop organic semiconducting materials.

关键词： Terpolymer Electron-donating Energy level Molecular geometry

Effects of damage of Hatschek's pit of amphioxus on its structure and function

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Chinese Science Bulletin 2001年第18期46卷 1528-1533页

作者： Yongqiang Fang Youzhu Weng lie chen Third Institute of Oceanography State Oceanic Administration Xiamen China

It is found for the first time that, after the structure and endocrine function of Hatschek’s pit of Bran-chiostoma belcheri are damaged by monosodium glu-tamate (MSG) treatment in breeding season, tbe ovulation of mature ovary, as well as the development of both ovary and testis of large-growth stage are obstructed and stagnated; and in non-breeding season, the process of gonadal development is delayed. The disturbed ovulation and gonadal development can definitely be restored with exogenous gonad-otropic hormone as the therapeutical substitute. These results may provide new proof for the complete understanding of the evolutional process of pituitary function in vertebrates and playing an important role in the reproductive endocrine control system of Hatschek’s pit of amphioxus.

关键词： amphioxus monosodium glutamate Hatschek’s pit gonads.

Synthesis of a Fully Biobased Polyfunctional Vinyl Oligomer and Their UV Cured Films Prepared via Thiol-ene Coupling

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Journal of Renewable Materials 2019年第8期7卷 795-805页

作者： Changqing Fu Jiahui Wang lie chen Liang Shen Department of Polymer and Coating Jiangxi Science&Technology Normal UniversityNanchangChina Jiangxi Engineering Laboratory of Waterborne Coating NanchangChina

In this paper,a fully bio-based vinyl oligomer with high functionalities was successfully prepared from rapeseed oil by three modification steps:epoxidation of rapeseed oil,solvent-free and catalyst-free ring opening by 10-undecylenic acid followed by esterification with 10-undecenoyl ***,the renewable polymers were prepared by photo-polymerization of these modified vegetable oils with typical thiol monomers:pentaerythritol tetrakis(3-mercaptopropionate),pentaerythritol tris(3-mercaptopropionate)and 1,*** synthesis of the vinyl oligomer was monitored by nuclear magnetic resonance and Fourier-transform infrared *** average number of the carbon-carbon double bonds of the resulting vinyl oligomer is high to be *** kinetic of thiol-ene photo-polymerization of vegetable oil-based vinyl oligomer was studied by FTIR-ATR *** addition,the thermo-physical properties,thermal stability and solvent resistance of these UV cured films were *** polymers from 1,2-ethanedithiol exhibit higher gel content,storage modulus and glass transition temperature than those from other thiol monomers due to the high crosslinking densities of the resulting *** polymers show excellent thermal stability up to *** resulting polymers exhibit thermo-physical properties,excellent water resistance and thermals stability,which is promising to find application in coatings and adhesives.

关键词： Vegetable oil photo-polymerization thermo-physical properties thermal stability

Proton Fraction in Neutron Stars

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Chinese Physics Letters 2001年第1期18卷 142-144页

作者： ZHANG Feng-Shou chen lie-Wen Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion AcceleratorLanzhou 730000 Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000 CCAST(World Laboratory) P.O.Box 8730Beijing 100080

The proton fraction inβ-stable neutron stars is investigated within the framework of the Skyrme-Hartree-Fock theory using the extended Skyrme effective interaction for the first *** calculated results show that the proton fraction disappears at high density,which implies that the pure neutron matter may exist in the interior of neutron *** incompressibility of the nuclear equation-of-state is shown to be more important to determine the proton ***,it is indicated that the addition of muons in neutron stars will change the proton *** is also found that the higher-order terms of the nuclear symmetry energy have obvious effects on the proton fraction and the parabolic law of the nuclear symmetry energy is not enough to determine the proton fraction.

关键词： symmetry implies interior

Novel polymer acceptors achieving 10.18% efficiency for all-polymer solar cells

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Journal of Energy Chemistry 2021年第2期30卷 63-68,I0003页

作者： Shaorong Huang Feiyan Wu Zuoji Liu Yongjie Cui lie chena Yiwang chen College of Chemistry/Institute of Polymers and Energy Chemistry(IPEC) Nanchang University.Nanchang 330031JiangxiChina Institute of Advance Scientific Research(iASR) Jiangxi Normal University99 Ziyang AvenueNanchang 330022JiangxiChina State Key Laboratory for Modification of Chemical Fibers and Polymer Materials&College of Materials Science and Engineering Donghua UniversityShanghai 201620China

Polymer acceptors based on extended fused ring p skeleton has been proven to be promising candidates for all-polymer solar cells(all-PSCs), due to their remarkable improved light absorption than the traditional imide-based polymer acceptors. To expand structural diversity of the polymer acceptors, herein,two polymer acceptors PSF-IDIC and PSi-IDIC with extended fused ring p skeleton are developed by copolymerization of 2,20-((2 Z,20 Z)-((4,4,9,9-tetrahexadecyl-4,9-dihydro-s-indaceno [1,2-b:5,6-b']dithio phene-2,7-diyl)bis(methanylylidene))bis(3-oxo-2,3-dihydro-1 H-indene-2,1-diylidene))dimalononitrile(IDIC-C16) block with sulfur(S) and fluorine(F) functionalized benzodithiophene(BDT) unit and silicon(Si) atom functionalized BDT unit, respectively. Both polymer acceptors exhibit strong light *** PSF-IDIC exhibits similar energy levels and slightly higher absorption coefficient relative to the PSi-IDIC. After blended with the donor polymer PM6, the functional atoms on the polymer acceptors show quite different effect on the device performance. Both of the acceptors deliver a notably high open circuit voltage(V_(OC)) of the devices, but PSi-IDIC achieves higher V OCthan PSF-IDIC. All-PSC based on PM6:PSi-IDIC attains a power conversion efficiency(PCE) of 8.29%, while PM6:PSF-IDIC-based device achieves a much higher PCE of 10.18%, which is one of the highest values for the all-PSCs reported so far. The superior device performance of PM6:PSF-IDIC is attributed to its higher exciton dissociation and charge transport, decreased charge recombination, and optimized morphology than PM6:PSi-IDIC counterpart. These results suggest that optimizing the functional atoms of the side chain provide an effective strategy to develop high performance polymer acceptors for all-PSCs.

关键词： All-polymer solar cells Polymer acceptor Functional atoms Power conversion efficiency

Isospin dependence of nucleon effective masses in neutron-rich matter

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Nuclear Science and Techniques 2016年第6期27卷 25-32页

作者： Bao-An Li Bao-Jun Cai lie-Wen chen Xiao-Hua Li Department of Physics and Astronomy Texas A&MUniversity-Commerce Department of Physics and Astronomy and Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai Jiao Tong University School of Nuclear Science and Technology University of South China

In this talk,we first briefly review the isospin dependence of the total nucleon effective mass M Jinferred from analyzing nucleon-nucleus scattering data within an isospin-dependent non-relativistic optical potential model,and the isospin dependence of the nucleon E-mass M;E J obtained from applying the Migdal–Luttinger theorem to a phenomenological single-nucleon momentum distribution in nuclei constrained by recent electron-nucleus *** information about the isospin dependence of both the nucleon total effective mass and E-mass,we then infer the isospin dependence of nucleon k-mass using the well-known relation M_J~*=M_ J^(*1E).Implications of the results on the nucleon mean free path in neutron-rich matter are discussed.

关键词：同位旋相关有效质量单核子核物质丰中子平均自由程非相对论分析数据

Tunable Lower Critical Solution Temperature of Poly(butyl acrylate)in Ionic Liquid Blends

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Chinese Journal of Polymer Science 2021年第5期39卷 585-591,I0006页

作者： lie chen Jin Huang Cong Zhao Jia-Jia Zhou Ming-Jie Liu Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191China School of Physics Beihang UniversityBeijing 100191China International Research Institute for Multidisciplinary Science Beihang UniversityBeijing 100191China

We describe the lower critical solution temperature(LCST)-type phase behavior of poly(butyl acrylate)(PBA)dissolved in hydrophobic 1-alkyl-3-methylimidazolium bis{(trifluoromethyl)sulfonyl}amide ionic liquids(ILs).The temperature-composition phase diagrams of these PBA/ILs systems are strongly asymmetric with the critical composition shifted to low concentrations of *** the molecular weight increases from 5.0×10^(3) to 2.0×10^(4),the critical temperature decreases by about 67℃,and the critical composition shifts to a lower ***,the LCST of PBA/ILs system increases as increasing the alkyl side chain length in the imidazolium *** IL blends as solvents,the LCST of PBA can be tuned almost linearly over a wide range by varying the mixing ratio of two ionic liquids without modifying the chemical structure of the polymers.

关键词： PBA Ionic liquid LCST Thermo-responsive

Textural and compositional zoning in plagioclase phenocrysts:implications for magma chamber processes in the Emeishan large Igneous Province,SW China

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Acta Geochimica 2023年第3期42卷 453-470页

作者： Qi chen Song-Yue Yu lie-Meng chen Sheng-Hua Zhou Jian Kang State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China University of Chinese Academy of Sciences Beijing 100049China

Textural and compositional zoning within plagioclase phenocrysts records the magma chamber processes,such as magma differentiation,magma recharge and mixing,and crustal *** plagioclase phenocrysts in the Daqiao and Qiaojia plagioclase-phyric basalts from the Emeishan Large Igneous Province(LIP)show complex textural and compositional zoning patterns,e.g.,normal,reverse,oscillatory,and patchy zoning *** plagioclase phenocrysts exhibit a core–rim normal zoning pattern(Pl-A)with euhedral high-An cores(An=76–78%,in mole fraction)and low-An rims(An=68–72%),indicative of the crystal regrowth processes caused by recharge of relatively evolved magmas after the formation of high-An *** phenocrysts have a core–rim reverse zoning pattern(Pl-B)with irregular ovaloid cores,characterized by extremely low An(60–61 mol%)and Ba(84–88 ppm)contents and extremely high87Sr/86Sr ratios(0.7120–0.7130).The rims of the Pl-B have relatively high An(69–72%),Ba(~160 ppm)contents,and low87Sr/86Sri(~0.7056).These Pl-B plagioclase phenocrysts preserve the information about the interaction between the crustal xenocrysts and the transporting *** plagioclase phenocrysts show a core–mantle–rim oscillatory zoning pattern(Pl-C)with multiple oscillations of An(70–80%),Ba(88–147ppm)from core to rim,revealing replenishment and mixing of multiple batches of basaltic melts with diverse compositions.87Sr/86Sr ratios of the Pl-C do not vary significantly(0.7050–0.7054).A small portion of phenocrysts has patchy patterns in the cores(Pl-D),where the low-An patches(72–75%)in form of elliptical or irregular elongated shapes were enclosed by the high-An domains(80–87%).These features can be attributed to crystal dissolution and regrowth processes during the reaction between earlyformed low-Cumulates and recharged hot primitive *** cores,mantles,and rims of different types of plagioclase phenocrysts(except the core of Pl-B)commonly display nearly constant Sr isotopic comp

关键词： Emeishan large Igneous Province Plagioclase-phyric basalt Compositional zoning Plagioclase phenocryst Magma replenishment