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Online since: August 2011
Authors: Jiu Mei Xiao, Li Long Yu, Dong Yu Zhao, Wan Li He, Hui Cao, Huai Yang
China 2 Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P.
Experimental Fig. 1 shows the chemical structure and the phase transition temperatures of the ChLCP.
The micro-structure of the films were observed by scanning electron microscope (SEM, SUPRA 55) with the samples coated with a thin layer of carbon to eliminate any electric charge problem.
The chemical structure and the phase transition temperature of the used ChLCP. 2.
Online since: July 2011
Authors: Li Yuan Niu, Zi Mu Shi, Yong Li, Lin Chao Xu, Lan Zhao, Ji Jing Lin
Results showed that foam magnesium alloys were produced by “Press-Dissolution-Vacuum sintering-Hot treatment-Aging”, in which pore size and structure can be easily controlled.
It showed highly uniform structure and covered 100% surface of the magnesium alloy.
Summery (1) Foam magnesium alloys were produced by “Press-Dissolution-Vacuum sintering-Hot treatment-Aging”, in which pore size and structure can be easily controlled
H:Materials and corrosion Vol.58 (2007), p. 193 [3] WANG Lishi, CAI Qizhou,WEI Bokang, et al : Trans Nonferrous Met Soc China Vol. 15 (2005), p. 777 [4] LI Jianzhong, TIAN Yanwen, CUI Zuoxing, and HUANG Zhenqi: Rare Metals Vol.27 (2008), p. 50 [5] Kwo Zong Chong and Teng Shih Shih: Materials Chemistry and Physics Vol. 80(2003), p. 191 [6] G.Y.
Online since: February 2011
Authors: Zhi Bing Xu, Yi Wang
The optical properties of nanosized ZnO are strongly dependent on its sizes and morphological structures.
Therefore, it is significantly important to design the morphological structures of ZnO nanoparticles.
The SEM image of ZnO nanoparticles with various calcination temperatures An X-ray diffraction (XRD) analysis was used to determine the chemical composition and crystal structure of the sample.
Chen, et al:Materials Chemistry and Physics Vol.99 (2006) ,p.50 [7] Z.
Online since: April 2014
Authors: Qiao Ling Wang
Results and Discussion Characterization of Fe3O4 @β-CD After the SEM analysis of the product,we can found that the product is spherical structure, in the nanometer level size, uniform particle size, smooth and no individual reunion phenomenon.
The results show the sample is Fe3O4 which has high purity and well-crystallizes structure.
And through the analysis of SEM, XRD,the size and structure of the product were sure.Besides,we have a series of experiment about the study of the best experiment condition.
[2] Cuilan chang,Xin Wang,and YuBai: Trends in Analytical Chemistry Vol.39 (2012), p.195-206
Online since: June 2014
Authors: E.S.G. Junior, P.M . Jardim
It has orthorhombic crystal structure and negative CTE along a and c axis and positive along b axis [5, 8].
The crystalline phase of Al2W3O12 with orthorhombic crystal structure, space group Pbcn and lattice parameters a = 12.6 Å, b = 9.06Å and c = 9.13Å is obtained only at 600oC.
Conclusions Nanocrystalline Al2W3O12 with orthorhombic crystal structure, space group Pbcn and lattice parameters a = 12.6Å, b = 9.06Å and c = 9.13Å was synthesized by co-precipitation method followed by calcination.
Sleight: Journal of Solid State Chemistry Vol 133 (1997), p. 580
Online since: March 2012
Authors: Kun Qi Wang, Juan Tang
Preparation of chlorophyll-sensitized photoanode The fluorine-doped tin(IV)oxide (FTO) conducting glass electrode modified with 20-nm-sized TiO2 mesoporous film was obtained from Peng Wang’s group of Changchun Institute of Applied Chemistry.
Assembling of the FEBFC The structure of the FEBFC is shown in Fig.2.
Fig.1 Molecular structure of Chlorophyll [5].
Structure and the electron transport of the FEBFC The process of electron transport of the FEBFC In the FEBFC, the process of electron transport (as shown in Fig.2) is discussed from following three aspects: chlorophyll-sensitized TiO2 film photoanode reaction; enzymatic reaction from photoanode compartment (NAD+/NADH is used as electron-transferring mediator); oxygen reduction reaction from cathode compartment.
Online since: November 2010
Authors: Bo Eun Kim, Eun Hee Lim, Sung Koo Lee, Kyeong K. Lee
Lee and Eunhee Lima Green Chemistry and Engineering Department, Korea Institute of Industrial Technology (KITECH) 35-3 Hongchun-Ri, Ipchang-Myun, Cheonan-Si, Chungnam 331-825, Republic of Korea aehlim@kitech.re.kr Keywords: 1,2,4-Triazole; Organic lighting-emitting diodes Abstract.
Introduction The successful development of organic light-emitting diodes (OLEDs) has attracted the attention and efforts of a substantial number of researchers into the field. [1, 2] OLEDs are roughly classified as either small molecule or polymer devices based on the organic material employed and small molecule-based OLEDs exhibit a lower degree of variation because conjugated small molecules and/or oligomers have well-defined molecular structures and are easy to reproducibly synthesize, functionalize and purify.
(yield: 40%, Mass of product: 0.20 g) The chemical structure was confirmed by 1H NMR.
Results and Discussions Scheme 1 shows the molecular structure and synthetic procedures of Tz-2T-Hex.
Online since: June 2012
Authors: Xi Shi Tai
Synthesis and Luminescence Characteristics of Zn (II) Complexes With 2’-Hydroxyacetophenone-furan-2-carbohydrazine Xi-Shi Tai 1, a 1 College of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, P.R.
Structure analysis The molecule structure of Zn (II) complex is shown in Fig. 1.
Fig. 1 The molecule structure of Zn (II) complex Fig. 2 Shows the packing of the Zn (II) complex in the unit cell From Fig. 1, we can see that the ligand, 2’-hydroxyacetophenone-furan-2-carbohydrazine, is synthesized.
Online since: May 2004
Authors: Mikolaj Szafran, P. Wiśniewski, Gabriel Rokicki
Rokicki, Warsaw University of Technology, Faculty of Chemistry 3 Noakowskiego Str., 00-664 Warsaw, Poland Keywords: die pressing, polymeric binders, poly(vinyl alcohol), dispersions, alumina Abstract.
The purpose of this work was to study the effect of the chemical structure of new water thinnable binders on the properties of alumina profiles, processed by uniaxial pressing.
Conclusions The chemical structure of water thinnable polymeric dispersions has an essential effect on the properties of alumina materials, both before and after sintering.
Rokicki, "Effect of Acrylic-Styrene Copolymer Chemical Structure on the Properties of Ceramic Tapes Obtained by Tape-Casting", J.
Online since: January 2013
Authors: Hai Jun Niu, Xu Duo Bai, Lin Zhang, Hai Yang Zhang
Electropolymerization and electrochromism Properties of Poly(m-trifluoromethylaniline) Haiyang Zhang, Haijun Niu a,* , Lin Zhang and Xuduo Bai b,* Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Department of Macromolecular Science and Engineering, Heilongjiang University, Harbin 150086, P R China.
In the Fig.4 the film revealed a dense mesh porous structure.
The apertures have an average diameter of about 500nm, and there are a great deal of holes in the dense layered structure.
The web-like structure would facilitate electrolyte ion transport into the polymer film to enhance the efficiency of electrochromic process.