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Online since: December 2010
Authors: Masaki Kakiage, Rie Takamatsu, Hiroki Uehara, Takeshi Yamanobe, Keizo Suzuki
Nano-Platelet Structure of Clay Materials Observed by Atomic Force Microscope Masaki Kakiage,1,2,a Rie Takamatsu1, Hiroki Uehara1,b, Takeshi Yamanobe1,c and Keizo Suzuki3 1Department of Chemistry and Chemical Biology, Graduate School of Enginerring, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan 2Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Ookubo, Sakura-ku, Saitama 338-8570, Japan 3Graduate School of Engineering, Hokkaido University, Kita-ku, Sapporo 060-8628, Japan akakiage@apc.saitama-u.ac.jp, buehara@chem-bio.gunma-u.ac.jp, cyamanobe@chem-bio.gunma-u.ac.jp Keywords: montmorillonite, organic modification, atomic force microscope, dispersion, ultrasonication, adsorption Abstract.
In this study, we investigated the nano-platelet structures of original and organically modified montmorillonite clays.
Ultrasonication of the solution resulted in the destruction of the layered structure of the clays.
The AFM topographic image in (b) depicts platelet structure of the original clay.
The clay structures in both solutions were characterized using AFM measurements, as shown in Fig.3.
Online since: August 2014
Authors: Ming Gong, Yong Kuan Gong, Xiao Qin Wang, Kai Li Sheng, Qi Wang, Zhu Feng Li
Fabrication of Cell Outer Membrane Mimetic Surfaces on Chitosan Nanoparticles by Polyionic Complex and Template Polymerization Ming Gong1, a *, Zhu-feng Li1, b, Qi Wang1, c, Kai-li Sheng1, d, Xiao-qin Wang1, e and Yong-kuan Gong2, f 1School of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, China 2Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, China agongmpc@163.com, b597442349@qq.com, c2453112150@qq.com, d1628553019@qq.com, e342675922@qq.com, fgongyk@163.com * Corresponding author Keywords: Chitosan, Phosphorylcholine, Cell outer membrane mimetic, Nanoparticles.
As anticipated, PC-modified chitosan surfaces showed improved biocompatibility in blood clotting and platelet adhesion assays, attributed to the cell outer membrane mimetic structures formed on the surfaces.
This is a facile method of fabricating the desired structure of nanoparticles, but the method requires the low concentration, which is not conducive to large-scale application.
The structure of chitosan - polymethacrylic acid (CS-PMAA) nanoparticles was investigated by nuclear magnetic resonance (NMR) and zeta-potential.
The surfaces of The CS-PMA nanoparticles were composed of CS and PMA, which has some degree of imitation cell outer membrane structure.
Online since: February 2012
Authors: Hai Yun Shen, Qiu Hua Yang, Hai Yan Tian, Xue Juan Wang
The results show that complex oxides LaFeO3 and YFeO3 have stable perovskite structure.
That the tolerance factor of perovskite-type compounds whose structure is stability is generally between 0.78 to 1.05, and ABO3 type oxides can maintain a stable cubic structure.[12] If t deviates from 1.0 large, perovskite structure will be distorted, and even change into other structure.
Address: Department of Chemistry, Tianjin University, Tianjin 300072, China.
Journal of Solid State Chemistry, 111(1994) 208-216
Higher school journal of chemistry, 22(2001) 663- 665
Online since: February 2014
Authors: Li Guo, Yu Long Xu
At the same time, we calculate ZPE of the stationary points on the bases of the optimized structures.
The structure parameters of TS1 are similar to those of the product CF2O and then TS1 is regarded as product-like potential barrier.
Organofluorine Chemistry; Blackwell,Oxford, UK, 2006
Understanding organofluorine chemistry.
The Journal of Physical Chemistry A 1999 (103) 8075-8081
Online since: November 2011
Authors: Yong Qiang Wu, Si Kai Sun
This As a new type of nano-carbon materials , CNTs have special structure and exhibit excellent mechanical properties, electrical properties, electromagnetic properties, the unique micro-structure, high aspect ratio and high specific surface area.
This thesis studied the purity of CNTs by microwave technology, improved the surface of the carbon nanotubes, strengthen the structure and properties of carbon nanotubes, reduced the impurities of CNTs, the pretreatment of CNTs has been expanded and got the best parameter of microwave technology.
It features a unique molecular structure of quasi-one-dimensional Guanzhuang it has excellent mechanical properties, electrical properties and electromagnetic properties, so that in future high-tech field has many potential applications, and quickly became chemistry, physics and materials science research focus.
Materials and reagents Experiments using carbon nanotubes is Chengdu Institute of Organic Chemistry, Chinese Academy of production of high purity multi-walled carbon nanotubes, the basic parameters shown in Table 1-1.
Morphology by subsequent analysis concluded that this condition can be better to remove some impurities in the nanotubes and carbon nanotube itself to ensure the structure to maintain.
Online since: June 2008
Authors: Gang Wang, Xu Feng Chen, Xu Dian Shi, Long Jiang Yu, Bi Feng Liu, Guang Yang
Bacterial cellulose (BC), produced by Acetobacter xylinum (A. xylinum), consists of ribbon-shaped nanofibers structured in a weblike network.
Moreover, highly ordered structure can avail and enhance the special functions in optics, electrics and magnetics for BC composites.
Results and Discussion IR and WAXD suggested that the structure of BC is typical of cellulose I.
It implies that the hierarchical ordered structure might be controlled by adjusting the size of the channels.
Acknowledgements: This subject was supported by National Natural Science Foundation of China (20774033) and Key Laboratory of Cellulose and Lignocellulosics Chemistry, Guangzhou Institute of Chemistry, Chinese Academy of Sciences (LCLC-2007-07) and the Key Scientific Research Foundation of Huazhong University of Science and Technology (HUST-SRF NO. 0125170002).
Online since: May 2020
Authors: Bei Qing Huang, Xian Fu Wei, Li Juan Liang, Wen Juan He, Rong Cao
The structure of the base pair is π-π electron overlap, and there are grooves in the DNA structure.
The structure of DNA makes the Ru coordination structure unit evenly embedded in the polymer molecular chain.
Hart, et al: Inorganic Chemistry 2004, 43, 4570-4578
Grueso: Inorganic Chemistry 2012, 51, 10825-10831
Kumbhar, Peter Lönnecke, et al: Inorganic Chemistry 2010, 49, 4843-4853
Online since: September 2014
Authors: Lu Qiu, Hai Han Yang, Fang Lei, Shu Guo Fan, Mei Hua Xie, Zhen Ji Wang
Five strains of Botrytis cinerea were used as the experimental materials. 0.3 % carbendazim and 0.3 % chlorothalonil were used as comparing chemistry bacteriostatic agents.
BC39 mycelium structure, which handled by carbendazim and chlorothalonil, has been completely destroyed and disintegrated, and there is no completd mycelium.
South African Journal of Chemistry, Vol. 66 (2013), p. 00-00
Bioinorganic chemistry and applications, (2014)
Radiation Physics and Chemistry, Vol. 98(2014), p. 103-108
Online since: December 2011
Authors: Hao Shen, Dong Liang, Ying Yu Li, Yan Yan Chu
Because all evidences are almost damaged by fire, many isolation methods of analytical chemistry has been already used in extracting trace residue.
In the United States, for example, an estimated 30500 cases of intentionally set fire in structures were reported by U.S Fire Administration in 2008, these fires took the lives of 350 persons [2].
Analytical chemistry as the most important tool to analyze the fire debris and ignitable liquid residues .
Experts around the world are committed to use all kinds of chemistry, physics, mathematics and other methods to resolve the problems which exist in the fire investigation.
Online since: September 2018
Authors: Valentin I. Sergienko, Denis P. Opra, Alexander N. Minaev, Alexander A. Sokolov, Valery G. Kuryavyi, Sergey V. Gnedenkov, Sergey L. Sinebryukhov, Grigorii A. Zverev
Sergienko1,h 1Institute of Chemistry, FEB RAS, 159 100-letiya Vladivostoka Pr., Vladivostok 690022, Russia 2Far Eastern Federal University, 8 Sukhanova St., Vladivostok 690950, Russia a*dp.opra@gmail.com, bsvg21@hotmail.com, csls@ich.dvo.ru, dkvg@ich.dvo.ru, ebronatin@mail.ru, falexsokol90@mail.ru, gaminaev@mail.ru, hsergienko@hq.febras.ru Keywords: Li-ion battery; anode material; hematite α-Fe2O3; core-shell structure; high performance.
Carbon-coated hematite α-Fe2O3 core-shell structure had been synthesized by a facile method of pulsed high-voltage discharge.
The structure, morphology, and phase composition of the material were characterized by SEM, TEM, and XRD methods.
SEM (a) and TEM (b) images for α-Fe2O3/carbon core-shell structure.
Kaydalova from the Institute of Chemistry of FEB RAS (Vladivostok, Russia).