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	1. Influence of Preparation Condition on the Performance of Ni-based Catalysts for the Glycerol Steam Reforming
	XIE Shuang,Zhang Xianghua,Tu Qiang,Shi Biao,Cui Yuehua,Chen Changguo
	Chemistry 11 May 2018
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	Abstract:The effect of preparation condition on the performance of Ni-based catalysts was investigated for the glycerol steam reforming. The La0.7Ce0.3NiO3 mixed oxides were synthesized using different solution concentrations and calcination temperatures by co-precipitation method. BET, ICP, XRD, TPR, FE-SEM, CO2-TPD, TGA and Raman spectroscopy were used to characterize the catalysts. Including La2NiO4 phase at lowest solution concentration, catalyst precursor included LaNiO3 phase instead of La2NiO4 at other solution concentrations. At low calcination temperature of 700 C, it was found that smaller particle size of CeO2 incorporated more lanthanum, higher surface basicity and La2O2CO3 phase could effectively inhibit and eliminate coking leading to the better performance of catalyst.
	TO cite this article:XIE Shuang,Zhang Xianghua,Tu Qiang, et al. Influence of Preparation Condition on the Performance of Ni-based Catalysts for the Glycerol Steam Reforming[OL].[11 May 2018] http://en.paper.edu.cn/en_releasepaper/content/4745028


	2. Corrosion inhibition of the new quaternary ammonium salts derivative with 8-Hydroxyquinoline on copper in 0.5M H2SO4 solution
	Lei Zulei,TAN Bochuan,QIN Zhongjian,JIANG Lu,XIANG Bin
	Chemistry 02 May 2018
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	Abstract:In this study, four kinds of ionic liquids (ILs) with different carbon chain lengths based on 8-Hydroxyquinoline have been synthesized and used as the corrosion inhibitions for copper in 0.5 M sulfuric acid solution. The data of impedance spectroscopy, polarization curves and scanning electron microscope (SEM) show a positive correlation relationship between inhibitor concentration and inhibition efficiency. Besides, the introduction of alkyl groups in the molecular structure contributes to slow down the corrosion of copper, and inhibition efficiency rises firstly and then declines with the incremental alkyl chain length. The theoretical calculation result is consistent with the abovementioned experiments results. Furthermore, the adsorption of the investigated inhibitors on the copper surface obeys the Langmuir adsorption isotherm.
	TO cite this article:Lei Zulei,TAN Bochuan,QIN Zhongjian, et al. Corrosion inhibition of the new quaternary ammonium salts derivative with 8-Hydroxyquinoline on copper in 0.5M H2SO4 solution[OL].[ 2 May 2018] http://en.paper.edu.cn/en_releasepaper/content/4744754

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	3. Enantioselective Michael addition of 2,4-pentanedione To nitroalkenes catalyzed by dehydroabietylamine-cinchonine-squaramide
	PENG Xueke,ZHENG Jie,DONG Chune
	Chemistry 11 April 2018
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	Abstract:In this paper, on the basis of the special activity of natural rosin derivatives and the good asymmetric induction activity of squaramide organic catalysts, a novel dehydroabietylamine-cinchonine-squaramide catalyst has been developed for asymmetric Michael addition of 2,4-pentanedione to nitroalkenes. It found that with using 5 mol% dehydroabietylamine-cinchonine-squaramide catalyst , the reaction of 2,4-pentanedione to nitroalkenes could act effectively, and a series of nitroalkene derivatives possessing optical activity were afforded with high reaction yields and excellent enantioselectivities (up to 99% yield, 89% ee).
	TO cite this article:PENG Xueke,ZHENG Jie,DONG Chune. Enantioselective Michael addition of 2,4-pentanedione To nitroalkenes catalyzed by dehydroabietylamine-cinchonine-squaramide[OL].[11 April 2018] http://en.paper.edu.cn/en_releasepaper/content/4744456


	4. An Electrochemical Sensor for Prothrombin-Time Test
	XIN Lifei,LIU Hong
	Chemistry 22 March 2018
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	Abstract:As a new interdisciplinary, blood coagulation and thrombosis, being involved in the development and progression of many diseases, have a prominent clinical significance. Prothrombin time (PT time) is the time when calcium and tissue factor is added into the blood sample until when the blood sample completely clots. Clinically, PT time is an extremely sensitive screening index in coagulation system, it has an irreplaceable influence to patients\' daily medication and related treatments as it can primarily reflect the normality of the extrinsic coagulation. Until recently, most automated coagulation analyzers used in hospitals can detect a variety of samples and projects at the same time with high accuracy. However it could only be operated by the professionals, not to mention the high production and testing costs. For these reasons, the frequency and ease-of-operation of the detection have been limited. In order to develop a real-time and household detection method, paper-chips and POCT technology are mainly utilized in this work. Paper-chips possesses their own advantages, as it can easily reflect the blood clotting process by detecting a change in the conductance of blood during the blood coagulation process. After a series of design, tests and improvements, a chip for PT time testing is fabricated. Using this chip, the PT time of several blood samples are tested, and the testing results confirmed that the further improved chip can complete the measurement and correction of blood PT time test. Compared with conventional coagulation analyzer, paper-chips have several intrinsic advantages such as reduced cost, higher accuracy, and better application in POCT use. We believe that pushing the further experimental products to market could fill the vacancy in the domestic industry.
	TO cite this article:XIN Lifei,LIU Hong. An Electrochemical Sensor for Prothrombin-Time Test[OL].[22 March 2018] http://en.paper.edu.cn/en_releasepaper/content/4744019


	5. Patterned Photonic Nitrocellulose Membrane for Bio-detection Based on Coffee-Ring Effect
	Litianyi Tang,Hong Liu
	Chemistry 19 March 2018
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	Abstract:In this work, we report a method for the fabrication of nitrocellulose (NC) membrane with photonic crystal (PC) pattern for bio-detection. The membrane is prepared by imprinting the corresponding PC pattern into it through thermal Nano-imprint method. Aptamer beacon marked with fluorescein is used for detection of target molecules. Only one droplet (2-3μl) containing the aptamer-target complexes is dripped onto the nitrocellulose membrane. After evaporation (15-20min), the droplet is completely dried and the complexes form a coffee ring on the membrane. The ring keep growing with the increase of complexes concentration .As the aptamer beacon is marked with fluorescein and PC pattern has a fluorescence enhancement effect, the fluorescent signal on the coffee ring for detection is considerable improved. Fluorescent detection of adenosine triphosphate (ATP) is used for testing the application of this method. Owing to fluorescence enhancement effect of PC, the fluorescent signal for detection is improved and the limit of detection is 80.2μM for ATP. Therefore, we believe this method is promising for the fabrication of patterned photonic nitrocellulose membrane for bio-detection and point-of-care testing.
	TO cite this article:Litianyi Tang,Hong Liu. Patterned Photonic Nitrocellulose Membrane for Bio-detection Based on Coffee-Ring Effect[OL].[19 March 2018] http://en.paper.edu.cn/en_releasepaper/content/4743982


	6. Novel Polyurethane Ionomer Nanoparticles Interaction with DNA and Cell Uptaken
	LUO Wenping,HU Jiongsheng,WU Jie,ZHAO Xinyue,HUANG Caoxizi,YE Yu,LI Dong,LIU Hongke
	Chemistry 30 July 2017
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	Abstract:It is well known that nanomaterials are widely used in biomedicine as imaging tools, phototherapy agents, and gene delivery carriers. Here, we report the synthesis and characterization of novel amphiphilic polyurethane nanoparticles (APU NPs), and the interaction of the APU NPs with CT-DNA and cell-penetrating. The physical properties and chemical composition of APU NPs were characterized by transmission electron microscopy (TEM), dynamic light scattering (DLS), zeta potential and nuclear magnetic resonance (NMR). The interactions with CT-DNA were investigated by circular dichroism (CD) and ultraviolet-visible (UV-Vis) spectroscopies. The cell membranes penetration were characterized by fluorescence inverted microscope and HEK293 cell was used. These results showed that the APU NPs might cause slight conformational change in CT-DNA, and the APU NPs could efficiently internalized into the HEK293 cells without overt membrane disruption.In particular,50 nm of the nanoparticles can enter the cell by effectively penetrating cell membrane and no damage.
	TO cite this article:LUO Wenping,HU Jiongsheng,WU Jie, et al. Novel Polyurethane Ionomer Nanoparticles Interaction with DNA and Cell Uptaken[OL].[30 July 2017] http://en.paper.edu.cn/en_releasepaper/content/4739221


	7. Density Functional Theory Characterization of Metallofullerenes La2C92: La2C2@C90 or La2@C92?
	GUAN Wenjuan,LI Qiaozhi,ZHAO Xiang
	Chemistry 21 June 2017
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	Abstract:By using density functional theory computations in conjunction with statistic mechanics analyses, the cage-selectivity of endohedral metallofullerenes La2C92 is investigated. Results indicate that isomers La2C2@C1(84069)-C90, La2C2@C2(99913)-C90 in carbide cluster metallofullerenes (CCMFs) La2C2@C90 and La2@D3-(126408)-C92, La2@C1-(126367)-C92 in dimetallofullerenes (di-EMFs) La2@C92 are the most favorable La2C92 candidates, in which the isomer La2C2@C2(99913)-C90 has been successfully isolated and characterized experimentally. In addition, those two CCMF isomers exhibit superior thermodynamic abundances than above-mentioned di-EMFs, though the latter ones are more favorable in potential energies. Furthermore, the electronic, orbital, and spectral analyses of those four isomers are conducted to help the further experimental characterization of La2C92 series.
	TO cite this article:GUAN Wenjuan,LI Qiaozhi,ZHAO Xiang. Density Functional Theory Characterization of Metallofullerenes La2C92: La2C2@C90 or La2@C92?[OL].[21 June 2017] http://en.paper.edu.cn/en_releasepaper/content/4737905


	8. Aptamer-modified Semiconductor Quantum Dots for Biosensing Applications
	WEN Lin,ZHANG xiaobing
	Chemistry 07 June 2017
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	Abstract:Semiconductor quantum dots have attracted growing interest in biosensing area, because of their unique properties, such as narrow and symmetric emission with tunable colors, high quantum yield, high stability and controllable morphology. The introduction of various reactive functional groups on the surface of semiconductor quantum dots allows us to conjugate a spectrum of ligands, antibodies, peptides, or nucleic acids for broader and smarter applications. Among these ligands, aptamers exhibit many advantages including small size, high chemical stability, simple synthesis with high batch-to-batch consistence and convenient modification. More importantly, it is facile to introduce nucleic acid amplification strategies and/or nanomaterials to improve the sensitivity of aptamer-based sensing systems. Therefore, the combination of semiconductor quantum dots and aptamers brings more opportunities in bioanalysis. In this review, we summarize recent advances of aptamer-functionalized semiconductor quantum dots in biosensing applications. Firstly, we discuss the structure and properties of semiconductor quantum dots, as well as aptamers. Then, the application of biosensors based on aptamer-modified semiconductor quantum dots is discussed in the context of different signal transducing mechanisms, including optical, electrochemical and electrogenerated chemiluminescence approaches. Finally, we provide our perspectives on the current challenges and opportunities in this promising field.
	TO cite this article:WEN Lin,ZHANG xiaobing. Aptamer-modified Semiconductor Quantum Dots for Biosensing Applications[OL].[ 7 June 2017] http://en.paper.edu.cn/en_releasepaper/content/4737088


	9. Optimization on production technology of nano silica
	YIN Xiangbin,OU Encai,XU Weijian
	Chemistry 24 May 2017
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	Abstract:In this paper, chemical precipitation was used to produce nano silica in the presence of polyvinylpyrrolidone (PVP) and cetyltrimethyl ammonium bromide (CTAB) as composite dispersant. The structure and property of samples were characterized by IR, XRD, SEM and BET. The results indicates that the product with small particle size ,large specific surface area and high oil adsorption value can be prepared under these conditions: concentration of acidic water glass: 7.5 Be′; temperature: 60-70 °C; pH value: 8; the amount of dispersant: 1.6% 5 Be′ water glass..
	TO cite this article:YIN Xiangbin,OU Encai,XU Weijian. Optimization on production technology of nano silica[OL].[24 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4735955


	10. Synthesis and Antiproliferative Activity of Polymethoxychalcones Mannich Base Derivatives on Three Human Cancer Cells
	LI Cui,DONG Linpei,LI Xueli,WANG Qiu’an
	Chemistry 22 May 2017
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	Abstract:A series of seven new polymethoxychalcones Mannich base derivatives 2a-2g were synthesized from natural product 2'-hydroxy-3,4,5,4',6'-pentamethoxychalcone (1). Their antiproliferative activities were evaluated in vitro on a panel of three human cancer cell lines (Hela, HCC1954 and SK-OV-3) by CCK-8 assay. The results showed that all of the target compounds exhibited antiproliferative activities against the three human cancer cells with the IC50 values of 9.13-48.51 μM, except parent compound 1 on Hela cells. Some active compounds exhibited more potency as compared to positive control cis-Platin. Among them, compound 2b revealed to be the most active with IC50 values ranging from 9.13 to 11.24 μM against all the three cancer cell lines.
	TO cite this article:LI Cui,DONG Linpei,LI Xueli, et al. Synthesis and Antiproliferative Activity of Polymethoxychalcones Mannich Base Derivatives on Three Human Cancer Cells[OL].[22 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4735398

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