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	1. Highly Effective La Modified Ni Catalysts Derived from NiAl-LDHs for Anthraquinone Hydrogenation
	GUAN Chaoyang,HONG Runrun,ZHANG Na,FENG Junting,YIN Min,LI Dianqing
	Chemistry 27 April 2016
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	Abstract:A series of Ni/Al2O3 catalysts were prepared using NiAl-CO3-layered double hydroxides (NiAl-LDHs) with different Ni/Al molar ratio (2:1~4:1) as precursors and studied in the hydrogenation of anthraquinone. The catalytic results show that Ni/Al2O3-2:1 catalyst exhibits highest hydrogenation activity due to the highest surface area. Moreover, different amount of lanthanum modified Ni/Al2O3-2:1 catalysts show higher hydrogenation activity. When the La loading reaches 2 %, the hydrogenation activity increases by 20.7 % and shows preferable selectivity compared with Ni/Al2O3-2:1 catalyst. Superior hydrogenation activity can be ascribed to the smaller Ni particle size and higher Ni dispersion. Preferable selectivity can be ascribed to the electronic effect of lanthanum, resulting in electron-rich Ni and weakening the adsorption of anthraquinone hydrogenation products. In addition, a new type of pores is generated during the calcination process, which is advantageous for the generated anthraquinone molecules to spread out to prevent overhydrogenation.
	TO cite this article:GUAN Chaoyang,HONG Runrun,ZHANG Na, et al. Highly Effective La Modified Ni Catalysts Derived from NiAl-LDHs for Anthraquinone Hydrogenation[OL].[27 April 2016] http://en.paper.edu.cn/en_releasepaper/content/4685749


	2. Study on Corrosion mechanism of copper and inhibitive properties of Domperidone on copper corrosion in different concentration of hydrochloric acid
	Zheng Sisi,Xiang Bin,Chai Yuqing,Chen Shijin,Xu Zhongcheng
	Chemistry 25 April 2016
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	Abstract:In this paper, the corrosion behavior of copper in HCl solution was investigated by surface analysis, weight loss and electrochemical measurements. Results show that corrosion products changed from 0.001 to 1 M HCl solution. The primary corrosion product is Cu2O in 0.001-0.01 M HCl solution, however, Cu2+ and a small amount of CuCl in 0.1-1 M HCl solution. It indicates that the corrosion mechanism of copper in different concentration of HCl is different. Domperidone was tested as a corrosion inhibitor for copper in different concentration of HCl solution using weight loss test, open circuit potentials (OCP), potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The experimental results revealed that corrosion rate of copper increased with the increment of HCl concentration from 0.001 to 1 M whether domperidone was added or not, and domperidone was a cathodic inhibitor in HCl solution, with a maximum achievable inhibition efficiency of 98.5% in 0.01 M HCl tested by EIS.
	TO cite this article:Zheng Sisi,Xiang Bin,Chai Yuqing, et al. Study on Corrosion mechanism of copper and inhibitive properties of Domperidone on copper corrosion in different concentration of hydrochloric acid[OL].[25 April 2016] http://en.paper.edu.cn/en_releasepaper/content/4685229

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	3. Analytical expressions for interaction between two palnar and sperical surface for 2-1type asymmetric electrolytes at positive surface potential
	LIU Guozhi
	Chemistry 15 March 2016
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	Abstract:In this paper, we suggest an analytical solution to Poisson-Boltzmann equation for the calculation of potential distributions between two identical plate colloidal particles immersed in a 2:1 type electrolyte solution with constant high or medium surface potential. Our expression fits well to the exact values of the potential between two parallel plates. Numerical results indicate that this analytical solution provides accurate description for the dimensionless distance ≤ 3. The suggested solution can be successfully applied in calculating the potential for identical plates with high or medium surface potentials. A simple analysis expression for the energy of interactions between two identical plates with constantly high or medium surface potential is given. The solutions in analytical and numerical forms become indistinguishable when , and , respectively. When , , the approximate solution is in close agreement with the numerical solution. By use of accurate analytical expression for the corresponding interaction energy between two parallel similar plates obtained presently, a simple analysis expression is given for calculating the energy of interactions between two identical spherical colloidal particles in a 2:1 type electrolyte solution with the help of Derjaguin's approximation.
	TO cite this article:LIU Guozhi. Analytical expressions for interaction between two palnar and sperical surface for 2-1type asymmetric electrolytes at positive surface potential[OL].[15 March 2016] http://en.paper.edu.cn/en_releasepaper/content/4680941


	4. Thermoresponsive Dendronized Polypeptides Showing Switchable Recognition to Catechols
	YAN Jiatao,LIU Kun,LI Wen,SHI Huang,ZHANG Afang
	Chemistry 29 December 2015
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	Abstract:A new class of thermoresponsive dendronized polypeptides was prepared through highly efficient oxime ligation between oxyamino-substituted polylysines and aldehyde-cored oligoethylene glycol (OEG) dendrons. Their secondary structures and thermoresponsive behavior were investigated. Due to the dendritic structures and stable oxime linkage, these OEG-based dendronized polypeptides exhibited fast and fully reversible phase transitions in neutrally aqueous solutions, and their phase transition temperatures can be controlled around physiological temperatures. The effect of OEG dendronization on secondary structures of polypeptides were examined to check their prominent dendritic shielding effect, steric hindrance, and thermally-driven phase transitions. To further extend the functions and potential applications of these stimuli-responsive dendronized polypeptides, phenylboronic acid moieties were introduced to achieve the corresponding dendronized copolymers, which were utilized to specifically recognize catechol-containing compounds such as alizarin red S or dopamine. These copolypeptides showed a significant enhancement to bind to catechols when comparing to monomeric phenylboronic acid. Furthermore, this enhanced binding can be switched surprisingly by thermally driven phase transitions or through addition of competitive catechols, which makes this class of dendronized polypeptides as unique scaffolds for selective and reversible recognition of catechols.
	TO cite this article:YAN Jiatao,LIU Kun,LI Wen, et al. Thermoresponsive Dendronized Polypeptides Showing Switchable Recognition to Catechols[OL].[29 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4674169


	5. Confined Space Synthesis of Mesoporous Silica Nanoparticles with a Three Dimensionally Ordered Close-packing Structure
	WANG Jing,CHEN Huiyong
	Chemistry 25 December 2015
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	Abstract:Mesoporous silica nanoparticles with a three dimensionally ordered close-packing structure (3DOc-p MSNs) were confined synthesis through steam-assisted crystallization treatment. With perfect replication from the three dimensionally ordered mesoporous carbon template, the obtained 3DOc-p MSNs presented a unique assembly structure of colloidal crystal composed of uniform mesoporous silica spherical particles with a controllable particle size ranged from 10 to 160 nm and various mesopore morphologies of hollow, multicellar, disordered wormlike, and ordered structure with the increasing of the confined space. Moreover, sonication induced fragmentation of 10, 20, and 40 nm 3DOc-p MSNs resulted in a clear suspension of highly monodispersed mesoporous silica nanoparticles with the corresponding particle size and mesopore structure.
	TO cite this article:WANG Jing,CHEN Huiyong. Confined Space Synthesis of Mesoporous Silica Nanoparticles with a Three Dimensionally Ordered Close-packing Structure[J].


	6. Comparative Studies of Three Synthetic Routes of Enzymatic Multicomponent Reactions (MCRs) for Strongly Fluorescent Spirooxazino Derivatives
	CHEN Xiaoyang,LIN Xianfu
	Chemistry 03 December 2015
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	Abstract:Enzymatic multicomponent reactions are very powerful for complicated organic synthesis with environmental friendly, highly efficient and selective characters. Herein, we designed and compared three routes of enzymatic MCRs for simple and efficient synthesis of complicated spirooxazinos derivatives, and one more efficient synthesis methodology for the target compounds than before was developed. Reaction conditions such as enzymes, enzyme concentration, amides and ratio of substrates were screened, and 15 spirooxazino derivatives were obtained in moderate to good yield. All of these novel spirooxazinos have strong fluorescence emission ability and high quantum yields, providing great application potential in photoactive materials. Furthermore, particularly interesting is that chiral spirooxazino could also be obtained through a developed two-enzymatic MCRs process in one pot.
	TO cite this article:CHEN Xiaoyang,LIN Xianfu. Comparative Studies of Three Synthetic Routes of Enzymatic Multicomponent Reactions (MCRs) for Strongly Fluorescent Spirooxazino Derivatives[OL].[ 3 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4666965


	7. Spectroscopic Study on Cu2+-induced Abnormally Blue-Shifted Fluorescence of Rhodamine Amide Derivative Contaning a N-Acetic Acid Substituent
	ZHANG Xuan,ZHU Yingying
	Chemistry 19 October 2015
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	Abstract:In this paper, a new rhodamine derivative (RBAA) containing an ethylenediamine-N-acetic acid moiety was synthesized and its fluorescence and absorption spectra were recorded in the presence of metal cations such as Cu2+ and Hg2+, respectively. It was found that the RBAA exhibited a abnormally blue-shifted green fluorescence with Cu2+, whereas showed an orange fluorescence with Hg2+. This was ascribed to a Cu2+-induced aggregation of RBAA.
	TO cite this article:ZHANG Xuan,ZHU Yingying. Spectroscopic Study on Cu2+-induced Abnormally Blue-Shifted Fluorescence of Rhodamine Amide Derivative Contaning a N-Acetic Acid Substituent[OL].[19 October 2015] http://en.paper.edu.cn/en_releasepaper/content/4657719


	8. One-pot synthesis of benzothiazolones from 2-haloanilines, potassium sulfide and N,N-dimethylformamide
	Li Zhengkai,Li Xiaoya,Zhou Xiangge
	Chemistry 09 July 2015
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	Abstract:Benzothiazolones represent an important class of compounds found in medicines and pesticides. The traditional synthetic methods to prepare of benzothiazolones usually suffered from the limitation of commercially available starting materials such as substituted o-aminothiophenols, toxic carbonyl sources or multiple steps. In this paper, an efficient Cu-catalyzed one-pot synthesis of benzothiazolones directly from easily available 2-haloanilines, potassium sulfide and N,N-dimethylformamide (DMF) as strating materials has been developed. In this protocol, C-S and C-N bond formation occurs during reactions with yields up to 87% after optimization of reaction conditions, which was CuSO4 (10 mol%), 2,2'-bipyridine (10 mol%), and NaOH (3 equiv) at 120 C for 18 h without inert atmosphere. Electron-donating groups seemed to be beneficial to the catalysis than electron-withdrawing groups, which indicated the electron-donating groups would benefit the nucleophilic attack during reaction. The mechanism studies revealed that the carbonyl group of product came from DMF.
	TO cite this article:Li Zhengkai,Li Xiaoya,Zhou Xiangge. One-pot synthesis of benzothiazolones from 2-haloanilines, potassium sulfide and N,N-dimethylformamide[OL].[ 9 July 2015] http://en.paper.edu.cn/en_releasepaper/content/4649429


	9. Mechanistic insight into the water photooxidation on pure and sulfur-doped g-C3N4 photocatalysts from DFT calculations with dispersion corrections
	Sen Lin,Xinxin Ye,Jing Huang,Xiaomei Gao
	Chemistry 11 June 2015
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	Abstract:In this work, first-principle methods are employed to build thermodynamic models for both the pure and sulfur atom modified g-C3N4 photocatalysts. Three possible mechanisms of oxygen evolution reaction (OER) following four one-electron pathway were investigated. The hydroxyl species as a key intermediate is found to strongly interact with the catalyst, which is distinct from the previous observation. The most likely pathway is via H2O → OH → O → OOH → O2, in which the first removal of proton, the rate-determining step, can not become surmountable at room temperature until an overpotential of 0.88 V (2.11 V vs SHE) is presented, in accord with the experimental observation that water photooxidaton is difficult to occur without any modification. On the other hand, the sulfur doping significantly reduces the overpotential , consistent with the experimental finding that the water oxidation reaction could be achieved at a moderate rate with sulfur-modified g-C3N4. Our theoretical results provide useful insights for designing better visible-light-driven anode to achieve high OER activity on graphitic carbon nitride based photocatalysts.
	TO cite this article:Sen Lin,Xinxin Ye,Jing Huang, et al. Mechanistic insight into the water photooxidation on pure and sulfur-doped g-C3N4 photocatalysts from DFT calculations with dispersion corrections[OL].[11 June 2015] http://en.paper.edu.cn/en_releasepaper/content/4646999


	10. Synthesis and antitumor activities of novel α-aminophosphonates from alizarin
	Gui-yang Yao,Heng-shan Wang
	Chemistry 14 October 2014
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	Abstract:The synthesis of new α-aminophosphonates derivatives containing alizarin (6a-6f, 7a-7h) moieties is described. Their inhibitory activities against the NCI-H460, Hct-116, 803, A549 and KB human cancer cell lines were estimated using MTT assay in vitro. The screening results revealed that many compounds exhibited moderate to high levels of antitumor activities against the tested cancer cell lines and that most demonstrated more potent inhibitory activities compared with the commercial anticancer drug 5-fluorouracil. The mechanism of compound 7g was preliminarily investigated by Hoechst 33258 staining, JC-1 mitochondrial membrane potential staining , which indicated that the compound 7g induced apoptosis inNCI-H460 cancer cells.
	TO cite this article:Gui-yang Yao,Heng-shan Wang. Synthesis and antitumor activities of novel α-aminophosphonates from alizarin[OL].[14 October 2014] http://en.paper.edu.cn/en_releasepaper/content/4613184

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