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Glucose Biosensor Based on Carbon/PVC-COOH/Ferrocene Composite with Covalently Immobilized Enzyme

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Chinese Chemical Letters 2005年第10期16卷 1357-1360页

作者： chun Xiang LI Yun Long ZENG chun Ran tang Chemistry and Chemical Engineering College Hunan University of Science and Technology Xiangtan 411201

A carbon/PVC-COOH/ferrocene composite electrode used for the determination of glucose has been prepared. The ferrocene acted as mediator was incorporated into the PVC-COOH polymer and the leakage could be prevented. The presence of carboxyl groups on the electrode surface allowed immobilizing enzyme via EDC and NHS. The ratio of PVC-COOH to graphite powder （w/w） has been studied. Amperometric determination of glucose has been performed at potential of 0.30 V vs SCE. The response time was 〈 15 s. The linear response range was of 0.1-20 mmol/L with a detection limit of 48μmol/L.

关键词： PVC-COOH ferrocene glucose oxidase glucose.

Fabricating Na/In/C Composite Anode with Natrophilic Na-In Alloy Enables Superior Na Ion Deposition in the EC/PC Electrolyte

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Nano-Micro Letters 2022年第2期14卷 45-59页

作者： Hui Wang yan Wu Ye Wang Tingting Xu Dezhi Kong yang Jiang Di Wu Yongbing tang Xinjian Li chun-Sing Lee Key Laboratory of Material Physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052People’s Republic of China Department of Chemistry Center of Super‑Diamond and Advanced Films(COSDAF)City University of Hong KongHong Kong SAR 999077People’s Republic of China School of Materials Science and Engineering Hefei University of TechnologyHefei 230009AnhuiPeople’s Republic of China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518055People’s Republic of China

In conventional ethylene carbonate(EC)/propylene carbonate(PC)electrolyte,sodium metal reacts spontaneously and deleteriously with solvent *** significantly limits the practical feasibility of high-voltage sodium metal batteries based on Na metal ***,we present a sodium metal alloy strategy via introducing NaIn and Na_(2)In phases in a Na/In/C composite,aiming at boosting Na ion deposition stability in the common EC/PC *** cells with Na/In/C electrodes achieve an impressive long-term cycling capability at 1 mA cm^(-2)(>870 h)and 5 mA cm^(-2)(>560 h),respectively,with a capacity of 1 mAh cm^(-2).In situ optical microscopy clearly unravels a stable Na ion dynamic deposition process on the Na/In/C composite electrode surface,attributing to a dendrite-free and smooth ***,theoretical simulations reveal intrinsic mechanism for the reversible Na ion deposition behavior with the composite Na/In/C *** pairing with a highvoltage NaVPOF cathode,Na/In/C anode illustrates a better suitability in SMB *** work promises an alternative alloying strategy for enhancing Na metal interfacial stability in the common EC/PC electrolyte for their future applications.

关键词： EC/PC electrolyte Sodium metal batteries Na/In/C electrode Dendrite-free and smooth morphology Theoretical simulations

Temperature-dependent chloride-mediated access to atom-precise silver thiolate nanoclusters

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Science China Chemistry 2022年第6期65卷 1094-1099页

作者： Ling yang Xin-Yao Wang Xiao-yan tang Meng-Yi Wang chun-yan Ni Hong Yu Ying-Lin Song Brendan F.Abrahams Jian-Ping Lang College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou215123China School of Materials Engineering Changshu Institute of TechnologyChangshu215500China School of Physical Science and Technology Soochow UniversitySuzhou215006China School of Chemistry University of MelbourneParkvilleVictoria3010Australia

By using a unique temperature-dependent,chloride-mediated approach,two atom-precise silver nanoclusters[Cl@Ag_(14)(Tab)_(12)-(C_(5)H_(4)NCl)_(12)](PF_(6))_(13)(Cl@Ag_(14))and[Cl_(3)@Ag_(24)(Tab)_(20)(C_(5)H_(4)NCl)_(11)]Cl(PF_(6))_(20)(Cl_(3)@Ag_(24))(Tab=4-(trimethylammonio)benzenethiolate,C_(5)H_(4)NCl=3-chloropyridine)were obtained ***,the number of chloride ions encapsulated inside the Ag-S shell could be regulated by the slow dissolution of almost insoluble KCl at various *** inclusion of additional core chloride ions results in the expansion of the surrounding Ag-S *** article provides a promising synthetic approach for controlling the number of Ag atoms that form a shell around the anionic core,in addition to offering a potential pathway for the introduction of other inorganic anions into silver *** broadly,through the use of related ligands,the synthetic strategy offers scope for generating new families of silver thiolate clusters of varying size and composition.

关键词： temperature-dependent chloride-mediated core expansion silver thiolate nanocluster transformation

Symmetry Analysis and Similarity Solutions of a Resonant Davey-Stewartson System

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Communications in Theoretical Physics 2009年第10期52卷 581-587页

作者： GAO Yuan tang Xiao-yan Department of Physics Shanghai Jiao Tong University Shanghai 200030 China

Lie point symmetry analysis is performed to a recently proposed(2+1)-dimensional nonlinear system,theresonant Davey-Stewartson *** similarity solutions of the RDS equation are thus obtained.

关键词： resonant Davey-Stewartson system symmetry similarity solution

Protein dynamics elucidated by NMR technique

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Protein & Cell 2013年第10期4卷 726-730页

作者： Conggang Li chun tang Maili Liu Key Laboratory of Magnetic Resonance in Biological Systems Wuhan Center for Magnetic ResonanceState Key Laboratory of Magnetic Resonance and Atomic and Molecular PhysicsWuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan 430071China

In 1957,Christian Anfinsen postulated his famous dogma based on the study of ribonuclease(Sela et al.,1957),stating that the amino acid sequence of a protein determines its tertiary structure,a unique and kinetically accessible energy minimum,in a given *** a result,determination of a global energy minimum,or the most populated structure,has been the main focus of structural biology in the ensuing half a *** more and more structures have been determined,people have gain some insights of why protein functions,but the detailed mechanisms and the function process,or how protein functions,remains elusive.

关键词： elucidated structure dynamics

Fault-Tolerate Three-Party Quantum Secret Sharing over a Collective-Noise Channel

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Chinese Physics Letters 2011年第2期28卷 35-38页

作者： LI chun-yan LI yan-Song Key Laboratory for Atomic and Molecular Nanosciences and Department of Physics Tsinghua UniversityBeijing 100084 Tsinghua National Laboratory for Information Science and technology Beijing 100084

We present a fault-tolerate three-party quantum secret sharing(QSS)scheme over a collective-noise ***-free subspaces are used to tolerate two noise modes,a collective-dephasing channel and a collective-rotating channel,*** this scheme,the boss uses two physical qubits to construct a logical qubit which acts as a quantum channel to transmit one bit information to her two *** agents can get the information of the private key established by the boss only if they *** boss Alice encodes information with two unitary *** single-photon measurements are required to rebuilt Alice's information and detect the security by the agents Bob and Charlie,not Bell-state ***,Almost all of the photons are used to distribute information,and its success efficiency approaches 100%in theory.

关键词： theory collective quantum

Quantum Key Distribution Based on a Weak-Coupling Cavity QED Regime

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Chinese Physics Letters 2011年第12期28卷 28-31页

作者： LI chun-yan LI yan-Song State Key Laboratory of Low-dimensional Quantum Physics and Department of PhysicsTsinghua UniversityBeijing 100084 Tsinghua National Laboratory for Information Science and Technology Beijing 100084 Department of Physics National University of Defense TechnologyChangsha 410073

We present a quantum key distribution scheme using a weak-coupling cavity QED regime based on quantum dense *** entanglement statesof photons and electrons are used to distribute *** just need to transmit photons without storing them in the *** electron confined in a quantum dot,which is embedded in a microcavity,is held by one of the legitimate users throughout the whole communication *** the polarization of a single photon and spin of electron measurements are applied in this protocol,which are easier to perform than collective-Bell state *** optical apparatus,such as a special polarizing beam splitter in a circular basis and single photon operations,make it more flexible to realize under current *** efficiency will approach 100%in the ideal *** security of the scheme is also discussed.

关键词： process quantum scheme

On complete convergence for Stout's type weighted sums of NOD sequence

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Applied Mathematics(A Journal of Chinese Universities) 2015年第3期30卷 340-346页

作者： YI yan-chun HU Di CHEN Ping-yan College of Mathematics and Statistics Hengyang Normal University Department of Mathematics Ji’nan University

In this paper, the complete convergence for the weighted sums of independent and identically distributed random variables in Stout [9] is improved and extended under NOD *** more optimal moment condition is given. The... 详细信息

关键词： NOD sequence Stout's type weighted sum complete convergence

Theoretical Study of Decomposition Pathways for Rare-gas-containing Compounds HRgX (Rg = He, Ne, Ar, Kr; X = Cl, Br)

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Chinese Journal of Structural Chemistry 2005年第12期24卷 1445-1451页

作者： AI chun-Zhi SUN Ren-An yan Jie College of Chemistry and Chemical Engineering Liaoning normal university Dalian 116029 China

Eight species, HRgX （Rg = He, Ne, Ar, Kr; X = Cl, Br）, are predicted to have bending transition states at B3PW91/AUG-cc-PVTZ level, leading to 2-body decomposition pathway like H-Rg-X→Rg＋HX. The reaction path has been obtained with Intricate Reaction Coordinates （IRC） method on identical theoretical level. Additionally, the linear transition states of HArCl, HArBr, HKrCl and HKrBr were obtained at MP2/6-311 ＋＋G （2d, 2p） level, resulting in 3-body dissociation channel as H-Rg-X→H ＋ Rg＋ X.

关键词： decomposition pathway transition state IRC energy barrier