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A facile electrochemiluminescence device for ultrasensitive monitoring of chlorinated phenols based on Ru(bpy) 3 2+ and graphene quantum dots

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Nanomedicine: Nanotechnology, Biology and Medicine 2018年第5期14卷 1803-1803页

作者： Bao-Ping Qi Shenghui Zhang Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province College of Chemistry and Environmental Engineering Hubei Minzu University Enshi 445000 China

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Synthesis, Crystal Structure and AntitumorActivity of N-[5-(Benzylthio)-1,3,4-thiadiazol-2-yl]-4-chlorobenzamide

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结构化学 2017年第8期 1321-1326页

作者： MA Xiao-Ping HANG Yu-Tian SONG Xin-Jian WANG Yan WANG Jun-Gang LI Yao-Hua Hubei Key Laboratory of Biological Resources Protection and Utilization Hubei University for Nationalities School of Chemical and Environmental Engineering Hubei University for Nationalities

The title compound N-[5-（benzylthio）-1,3,4-thiadiazol-2-yl]-4-chlorobenzamide(C16H12ClN3OS2, Mr = 361.86) was designed and synthesized as anticancer agent, and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to triclinic, space group P1 with a = 5.7417（10）, b = 9.8057（17）, c = 14.330（3） ?, a = 91.987（3）, b = 97.154（3）, γ = 93.402（3）°, V = 798.4（2） ?3, Z = 2, Dc = 1.505 g/cm3, μ = 0.507 mm-1, F（000） = 372, the final R = 0.0481 and wR = 0.1290 for 2064 observed reflections with I > 2s（I）. In the crystal packing, the molecules form stacks by a three-dimensional framework, which results from intermolecular N（1）-H（1）···N（2） and C（5）-H（5）···N（3） hydrogen bonds together with π-π stacking interactions between the thiadiazole and chlorobenzene rings. The title compound was found to exhibit more potent in vitro antitumor activities against the four tested cancer cell lines than sorafenib.

关键词： 1,3,4-thiadiazole benzamide synthesis crystal structure antitumor activity

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Synthesis, Crystal Structure and Flame Retardance of 2-(3-Silatranylpropylamino)-4-phenyl-5,5-dimethyl-1,3,2-dioxaphosphorinane-2-oxide

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结构化学 2017年第7期 1117-1123页

作者： MA Xiao-Ping HUANG Yu-Tian ZHENG Yin WANG Dong-Hua WANG Jun-Gang SONG Xin-Jian Hubei Key Laboratory of Biological Resources Protection and Utilization， Hubei University for Nationalities School of Chemical and Environmental Engineering， Hubei University for Nationalities

The title compound, 2-（3-silatranylpropylamino）-4-dichlorophenyl-5,5-dimethyl-1,3,2-dioxaphosphorinane-2-oxide(2(C20H33N2O6Psi)·C2H6O·CH4O, Mr = 991.20), has been synthesized by the nucleophilic substitution reaction of 2-chloro-4-phenyl-5,5-dimethyl-1,3,2-dioxaphosphorinane-2-oxide with γ-aminopropylsilatrane, and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P1 with a = 10.3783（15）, b = 11.2402（17）, c = 12.1675（18） ?, a = 70.653（4）, b = 82.908（4）, g = 85.690（4）°, V = 1328.1（3） ?3, Z = 1, Dc = 1.239 g/cm3, μ = 0.19 mm-1, F（000） = 532, the final R = 0.0640 and wR = 0.2090 for 3615 observed reflections with I > 2s（I）. The cyclic dioxaphosphorinane ring in the molecule adopts a thermodynamically stable cis conformation, while the silatrane fragment forms a cage-like structure in which there exists an intramolecular Si?N donor-acceptor bond. In the crystal structure, centrosymmetrically related molecules are linked by pairs of N–H···O hydrogen bonds into dimers, generating rings with graph-set motif R22（8）. Furthermore, a couple of O（7）–H（10）···O（3） hydrogen bonds were formed by O atom of P=O and H atom from hydroxyl in the solvent ethanol. Thermal property of the compound was also studied by means of thermogravimetry（TGA）. The thermal analysis and preliminary fireproofing test show that the title compound has good flame retardance.

关键词： 1,3,2-dioxaphosphorinane-2-oxide crystal structure epoxy resin flame retardance

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The maximum amplification of perturbations in ecological systems

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International Journal of Biomathematics 2017年第1期10卷 153-173页

作者： Hailing Wang Jicheng Zhang Xiao-SongYang Key Laboratory of Biologic Resources Protection andUtilization of Hubei Province Hubei University for Nationalities Enshi 445000 P. R. China School of Science Hubei University for Nationalities Enshi 445000 P. R. China School of Medical Hubei University for Nationalities Enshi 445000 P. R. China Program for Ecology and Environment Science School of Mathematics and StatisticsHuazhong University of Science and Technology Wuhan 430074 P. R. China

Conventionally, most researches of ecologicM models focus mainly on the asymptotic stability properties near equilibria. However, transient effects can be important. It dom- inates the dynamics seen in experimental or field studies. Transient behavior near an equilibrium is measured by resilience, reactivity, the maximum amplification of a per- turbation and the time at which the maximum amplification occurs. In this paper, we demonstrate emphatically the calculation of the amplification envelope of a homoge- neous system of linear equations, then apply it to three ecological models. We conclude that transient amplification of perturbations to a stable equilibrium should be a very common ecological phenomenon, and reactive systems have huge changes around their equilibria.

关键词： Transient dynamics perturbation reactivity amplification envelope ecolo-gical models.

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Synthesis and crystal structure of ethyl 2-(Salicylylideneamino)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate 3rd

Synthesis and crystal structure of ethyl 2-(Salicylylideneam...

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3rd Annual International Conference on Material Science and Engineering, ICMSE 2015

作者： Gao, H. Fu, J. Song, X.J. Laboratory of Biologic Resources Protection and Utilization of Hubei Province Hubei University for Nationalities Enshi China School of Chemical and Environmental Engineering Hubei University for Nationalities Enshi China

ISBN: (纸本)9781138029361

The Schiff base ethyl 2-(2-hydroxybenzylideneamino)-4,5,6,7-tetrahydrobenzo[b] thiophene-3-carboxylate (C18H19 NO3S, Mr = 329.40) was synthesized by the condensation reaction of sal-icylaldehyde with ethyl 2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate, which was efficiently prepared via a one-pot Gewald’s three-component reaction using cyclohexanone, ethyl 2-cyanoacetate and elemental sulfur as starting materials. The structure of the title compound was determined by single-crystal X-ray diffraction. The crystal belongs to triclinic, space group Pī with a = 8.3714(17) Å, b = 10.023(2) Å, c = 10.744(2) Å, α = 82.729(2)°, β = 67.119(2)°, γ = 79.631(3)°, V = 815.4(3) Å3, Z = 2, Dc = 1.342 g/cm3, μ = 0.213 mm−1, F(000) = 348, the final R = 0.0487 and wR = 0.1164 for 2688 observed reflections with I > 2σ(I). X-ray diffraction analysis reveals that the title molecule is nearly planar except for the cyclohexene and ester moieties. © 2016 Taylor & Francis Group, London.

关键词： Crystal structure

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Electrochemical Behavior of Magnolol on FeWO4 Nanoflower Modified Carbon Paste Electrode

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Journal of Wuhan University of Technology(Materials Science) 2016年第4期31卷 722-726页

作者：胡卫兵 ZHANG Wen SONG Nannan QU Wanyun HU Sheng Key Laboratory of Biological Resources Protection and Utilization of Hubei Province Hubei University for Nationalities. Enshi 445000 China School of Chemical and Environmental Engineering Hubei University for Nationalities Enshi 445000 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

In order to establish a simple,sensitive,and fast reliable detection method to determine the magnolol,FeWO4 nanoflower was synthesised through a solvothermal technique and FeWO4 nanoflower modified carbon paste electrode（CPE） was *** voltammetric behavior of magnolol on the modified electrodes was studied using cyclic voltammetry（CV）,linear sweep voltammetry（LSV）,and differential pulse voltammetry（DPV）.The experimental results showed that the modified electrode remarkably enhanced the electrochemical response of the magnolol and exhibited a wide linear range for determination of the magnolol from 1.0×10-7 to 1.0×10-4 mol/L with a low detection limit of 5.0×10-8 mol/L.

关键词： voltammetry Paste paste remarkably Modified graphite paraffin anodic electrolyte silica

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Route selection for dangerous goods based on D numbers

Route selection for dangerous goods based on D numbers

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第28届中国控制与决策会议

作者： Ningkui Wang Xiaozhong Huang Daijun Wei School of Science Hubei University for Nationalities Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province

ISBN: (纸本)9781467397155

Route selection for dangerous goods transportation is a hot issue which involved in much uncertainty,fuzziness and *** this paper,D numbers theory is used in the route selection for dangerous goods to deal with these information,both complete and incomplete,qualitative and *** three main criteria "transportation cost","risk during the transportation" and "emergency response ability" are considered to evaluate the routes and dijkstra algorithm is used to find out the optional *** illustrative example is presented to demonstrate the effectiveness of the proposed method.

关键词： D numbers Route selection Dangerous goods Uncertainty Fuzziness Dijkstra algorithm

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Investment Decision Using D Numbers

Investment Decision Using D Numbers

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第28届中国控制与决策会议

作者： Xiaozhong Huang Ningkui Wang Daijun Wei School of Science Hubei University for Nationalities Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province

ISBN: (纸本)9781467397155

Investment decision is a complex problem influenced by many factors such as investment value,cost,sales,*** critical issue of investment decision is the representation of uncertain *** theories can deal with uncertain ***,more or less deficiencies of these methods are ***,D numbers,a new method to represent uncertain and incomplete information,has been widely applied in dealing with uncertain *** this paper,D numbers is applied to investment decision *** value,cost,sales,proportion of national income and the extent of environmental pollution are represented by D numbers and the algorithm of maximizing deviations is used to calculate the weight of different *** illustrative case is given to show the effectiveness of the new method.

关键词： Dnumbers Multiple attribute Decision making Maximizing deviations

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Microwave-assisted Synthesis of Porous Sodium Alginate-g-poly(NVP-co-NIPAAm) Hydrogel and Sustained Release of 5-FU

Microwave-assisted Synthesis of Porous Sodium Alginate-g-pol...

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第二届湖北省化学化工青年科学家论坛

作者： Chengyi Wu Cong Li Xu Zhang Dating Tian Jinshou Wang Yin Zheng Department of Chemistry and Environmental Engineering Hubei University of Nationalities Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province

In this manuscript,Na Alg-g-Poly(NVP-co-NIPAAm)were synthesized by a free radical grafting polymerization with microwave radiation,the structure and morphologies of Na Alg-g-poly(NVP-co-NIPAAm)were characterized by Fourier transform infrared spectroscope(FT-IR),thermogravimetric analysis(TG),differential scanning calorimeter(DSC)and scanning electron microscopy(SEM).The swelling behavior and p H sensitivity of Na Alg-g-poly(NVP-co-NIPAAm)were investigated.5-Fluorouracil(5-FU)was used as model drug to study the release behavior in simulated gastric fluids(SGF,p H=1.2)and simulated intestinal fluids(SIF,p H=7.4).The results displayed that the cumulative release ratio was up to 80.2%in p H=7.4 for11h,only 50.2%in p H=*** means that this hydrogel was suitable for colon-specific drug delivery systems.

关键词： Hydrogels Swelling Controlling release 5-FU

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One-step Preparation of Photoluminescent Nitrogen-doped Graphene Quantum Dots from Doped Graphene

One-step Preparation of Photoluminescent Nitrogen-doped Grap...

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第二届湖北省化学化工青年科学家论坛

作者： Baoping Qi Shenghui Zhang Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province College of Chemistry and Environmental Engineering Hubei Minzu University

With unique and tunable photoluminescence(PL)properties,Graphene quantum dots(GQDs)as a new class of optical tags have been extensively *** GQDs with heteroatoms provides an attractive means of effectively tuning thei...

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