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	1. From Nearly Free Electron States to Two Dimensional Electron Gas in Free Space
	SM Ghulam Abbas,ZHAO Songtao,LI Zhenyu
	Chemistry 11 May 2017
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	Abstract:Nearly free electron like states (NFE) are counterparts of the image potential states floating on the surfaces of low dimensional materials. The exotic nuclear scattering free transport associated with them is realized extensively by both computationally and experimentally. These states exist as unoccupied part of the band some eV above the Fermi level. But, it is possible to draw NFE states to Fermi level either through chemical or electric imposed modifications. Unfortunately, in most cases doping usually destroys nuclear scattering free transport of NFE states, or employs complex gate systems. But this concept is now shifting to electride based design which remarkably resorts with two dimensional electron gas in free space (2DEG-FS). This short review, gives a pardigm shift of NFE states to 2DEG-FS with aid of theoretical designs and computational characterization.
	TO cite this article:SM Ghulam Abbas,ZHAO Songtao,LI Zhenyu. From Nearly Free Electron States to Two Dimensional Electron Gas in Free Space[OL].[11 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4733131


	2. A Density-Functional Tight-Binding Model of Copper and Carbon
	Di Yin,Zhenyu Li
	Chemistry 06 May 2017
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	Abstract:A new parametrization of copper and carbon within the self-consistent-charge density-functional tight-binding framework is presented to study its condensed-phase properties. The electronic part of the parameters is mainly generated via optimizing band structures. The repulsive part is calculated from the force or energy data of the corresponding adsorption configurations. Benchmark calculations with the obtained parameter set show good performance of structural energetic properties of bulk and surface systems. Parameters reported here can be used for modeling of complicated copper and carbon nanostructures.
	TO cite this article:Di Yin,Zhenyu Li. A Density-Functional Tight-Binding Model of Copper and Carbon[OL].[ 6 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4733173

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	3. The effects of activation conditions on the supercapacitive performance of porous activated biochar
	LU Qun,ZHANG Youwei,WANG Xianyou,GAO Jiao,LIU Jia,CHEN Manfang,LIU Min,WANG Xingyan
	Chemistry 05 May 2017
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	Abstract:The porous carbons derived from naturally abundant bamboo shoot shell for the application of supercapacitor are further activated by chemical activation with ZnCl2, H3PO4 and K2CO3. The influences of activation condition on the pore structure and physicochemical properties of the as-prepared porous carbon samples are investigated by scanning electron microscopy (SEM), transmission electron microscope (TEM), nitrogen adsorption-desorption isotherm, cyclic voltammogram (CV), galvanostatic charge-discharge (GCD) test, electrochemical impedance spectroscopy (EIS) and cycle life measurement. The results show that the porous activated carbon prepared at 1:1 weight ratio of K2CO3 to bamboo shoot shell exhibits a specific surface area of 1800 m2 g-1 with the average pore size of 3.35 nm (AC-K2CO3-900). In addition, the AC-K2CO3-900 shows a high specific capacitance of 287 F g-1 at the current density of 1 A g-1. Moreover, the AC-K2CO3-900 supercapacitor holds high capacitance retention of 95.80% even after 10000 cycles, indicating its potential prospect for the application of high-performance supercapacitors.
	TO cite this article:LU Qun,ZHANG Youwei,WANG Xianyou, et al. The effects of activation conditions on the supercapacitive performance of porous activated biochar[OL].[ 5 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4732705


	4. Asymmetric Phase-Transfer-Catalyzed 1,6-Conjugate Addition of Thiols to in situ Generated para-Quinone Methides
	ZHOU Lei,FAN Yajing,LI Shen
	Chemistry 03 May 2017
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	Abstract:A catalytic asymmetric 1,6-conjugate addition of thiols to in situ generated para-quinone methides has been developed, affording a range of optically active benzyl thioethers in excellent yields and enantioselectivities. The use of para-hydroxybenzyl sulfones as precursors for the formation of transient p-QM intermediates allows to overcome the limitations in substrate scope.
	TO cite this article:ZHOU Lei,FAN Yajing,LI Shen. Asymmetric Phase-Transfer-Catalyzed 1,6-Conjugate Addition of Thiols to in situ Generated para-Quinone Methides[OL].[ 3 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4732205


	5. A new fluorogenic and colorimetric chemosensor based on rhodamine hydrazide for copper(II) ions and its application to bioimaging
	REN Liexiang,WANG Panfeng,LIU Bin,YANG Binsheng
	Chemistry 03 May 2017
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	Abstract:A new rhodamine hydrazide derivative L containing a long chain schiff base with salicylic acid was synthesized and characterized. Addition of Cu2+ induced a significant solution color change (colorless to pink) and an enhancement in fluorescence of the probe, even in the presence of other commonly coexistent cations in CH3CN/HEPES buffer solvent (1:1, v/v, pH 7.0). Cu2+-promoted ring-opening and hydrolysis of rhodamine L in aqueous acetonitrile media led to the fluorescence turn-on changes with high selectivity and high sensitivity (detection limit ≤ 22.9 nM) and a rapid response time (≤ 1 min). Importantly, the probe was successfully used for fluorescence imaging in colon cancer SW480 cells
	TO cite this article:REN Liexiang,WANG Panfeng,LIU Bin, et al. A new fluorogenic and colorimetric chemosensor based on rhodamine hydrazide for copper(II) ions and its application to bioimaging[OL].[ 3 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4729507


	6. Semi-synthesis of Mangiferin-7-O-β-D-glucuronide
	YANG Bowei,LIANG Danlin,WEI Xiong,MENG Xiangbao,LI Zhongjun
	Chemistry 02 May 2017
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	Abstract:Mangiferin is a natural plant polyphenol with a structure of xanthone C-glycoside and it displays a wide spectrum of pharmacological activities. Investigation of the metabolites of mangiferin is valuable in studying on the mechanisms of its various pharmacological properties and developing novel drugs from the mangiferin derivatives. Among the metabolites of mangiferin, mangiferin-7-O-β-D-glucuronide has been reported as the phase II metabolite of mangiferin. Here we describe the first semi-synthesis of mangiferin-7-O-β-D-glucuronide with the natural product mangiferin as the starting material. In this work, we adopted several regioselective protection procedures to distinguish the different hydroxyl groups in the structure of mangiferin. And we accomplished the glycosylation under the phase-transfer catalysis conditions. In this method, we efficiently synthesized the glucuronide derivative of mangiferin in 10 steps with highly regioselective protection.
	TO cite this article:YANG Bowei,LIANG Danlin,WEI Xiong, et al. Semi-synthesis of Mangiferin-7-O-β-D-glucuronide[OL].[ 2 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4729417


	7. A colorimetric and fluorescent probe for rapid determination of copper in water and living cells
	Nie Hailiang,Zhang Xiaoling
	Chemistry 27 April 2017
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	Abstract:Detection of copper ions (Cu2+) is of great significance in protecting the environment and human health. In the present work, we developed a new colorimetric and fluorescent probe for Cu2+ determination with high selectivity and rapid-response rate. Upon Cu2+ addition, the probe underwent an 86 nm blue-shift in absorption peak wavelength as well as a significant quenching in fluorescence emission. The fluorescence intensity at 575 nm showed a good linear relationship (R2 = 0.999) with the Cu2+ concentration in the range of 0 μM ~ 12 μM. Using the probe as an analytical tool, the detection of Cu2 + can be done within 5 s, whose process was not subject to interference from other metal ions and pH changes. Moreover, the probe can be used for Cu2+ assay in both real water sample and living cells.
	TO cite this article:Nie Hailiang,Zhang Xiaoling. A colorimetric and fluorescent probe for rapid determination of copper in water and living cells[OL].[27 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4728954


	8. Facile preparation and performance of novel activated carbon based on bamboo shoot shell for supercapacitors
	LU Qun,ZHANG Youwei,WANG Xianyou,GAO Jiao,LIU Jia,CHEN Manfang,WANG Xingyan
	Chemistry 27 April 2017
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	Abstract:The porous carbon material prepared from naturally abundant bamboo shoot shell for the application of supercapacitor is put forward. It not only makes waste biomass to be profitable, but also provides a sustainable development way for the preparation of the new porous carbon material. The physicochemical and electrochemical properties of the as-prepared porous carbon samples are studied in detail. The results show that the porous carbon sample prepared at 5:1 weight ratio of KOH to bamboo shoot shell derived carbon (BSSDC) exhibits a specific surface area of ~ 3408 m2 g-1 (BSSDAC-5). In addition, the BSSDAC-5 shows a high specific capacitance of 308 F g-1 at 1 A g-1 and high capacitance retention of 97.40% even after 10000 cycles, indicating its potential application for high-performance supercapacitors.
	TO cite this article:LU Qun,ZHANG Youwei,WANG Xianyou, et al. Facile preparation and performance of novel activated carbon based on bamboo shoot shell for supercapacitors[OL].[27 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4730197


	9. Self-protection Electrochemical Sensor Based on Temperature-responsive Polymer
	Zhao Pengcheng,Chen Chao,Xie Yixi,Li Chunyan,Fei Junjie
	Chemistry 26 April 2017
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	Abstract:This work reports the application of a novel thermo-sensitive polymer PS-PNIPAm-PS in electrochemistry. It was fabricated and modi?ed onto a working electrode to form a self-protection electrochemical sensor. After testing, at low temperatures, it didn't affect the normal measurement of the working electrode; but at high temperatures, it can automatically shrink to form a dense film, to prevent electron transfer, protect the electrode surface is not damaged, increase its service life.This research provides a novel method for electrode protection, high temperature protection of batteries and new sensors production.
	TO cite this article:Zhao Pengcheng,Chen Chao,Xie Yixi, et al. Self-protection Electrochemical Sensor Based on Temperature-responsive Polymer[OL].[26 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4729697


	10. Fabrication of PLLA/HAp Composite Microspheres via Biomimetic Mineralization method
	MA Haiyun,NIE Taotao
	Chemistry 25 April 2017
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	Abstract:Hydroxyapatite(HA) is a natural gradient in human bones and has excellent biocompatibility and mechanical strength. The composite PLLA/HAp microspheres can combine the advantages for both PLLA and HAp. PLLA/HAp composite microspheres were fabricated by biomimetic mineralization method via soaking the microspheres with different structures in 1.5 times SBF. The morphology and chemical structure of PLLA/HAp composite microspheres were investigated by SEM, FTIR. The chemical composition and crystal form of HAp were investigated by TEM and XRD .The results shows that HAp nanoparticles have a homogeneous distribution on the microspheres and are polycrystalline structure. The PLLA/HAp composite microspheres would have potential application for bone tissue engineering.
	TO cite this article:MA Haiyun,NIE Taotao. Fabrication of PLLA/HAp Composite Microspheres via Biomimetic Mineralization method[OL].[25 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4727736

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