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Synthesis of red luminescent non symmetric styryl-4H-pyran-4-ylidene fragment containing derivatives for organic light-emitting diodes Elmars Zarins a, Janis Jubelsb and Valdis Kokarsc Institute of Applied Chemistry, Riga Technical University, Azenes Str. 14, Riga LV-1048, Latvia aelmix2003@inbox.lv, bjanisjubels@gmail.com, cvkokars@ktf.rtu.lv Keywords: OLED, red luminescent material, amorphous 4H-pyran derivatives.
The synthesized compound structures were identified by 1H-NMR spectra which were obtained on a Varian VRX-Unity NMR spectrometer (200 and 400 MHz). 2.1.
Compounds 5-7a, 5-7b, 10a-c, and 11a-c are characterized with intensive photoluminescence, which maximum is dependant on compounds structure and is between 580 nm to 690 nm providing us with a wide range of red-emitters.

SrAl2O4 has a monoclinic crystal structure with a space group of P21 and lattice parameters values a = 0.844 nm, b = 0.882 nm, c = 0.516 nm, β = 93.41˚ [4].
The comparison of measured powder XRD patterns of SrAl2O4: 0.02Eu, 0.02Dy with that of JCPDS data (No. 34-0379) indicates that the as-synthesized products are mainly well crystallized with the SrAl2O4 structure.
[5] Tianyou Peng，Huajun Liu，Huanping Yang，et al., : Materials Chemistry and Physics，Vol. 85 (2004)，p. 68.

Box 107, Yuseong, Daejeon 305-600, South Korea 2 Department of Chemistry, Inha University, Yonghyun-dong, Nam-gu, Incheon 305-600, South Korea a e-mail : sjpark@inha.ac.kr Keywords: nanoparticles, graphite, nanofibers, catalysts, electroactivity Abstract: Electroactivity of graphite nanofibers (GNFs)-supported PtRu particles was examined for their application as DMFCs anode.
Results and discussion Nanocomposite structures: The crystalline structures of the PtRu/GNFs catalysts have been investigated by XRD.

Research on the Performance of plaster Material by Chemical Foaming Method Hongxia Wang1, a, Bo Liu * 1, b, Kuangping Yuan1, c, Wubiao Duan1, d, Feihua Yang2, e and Jianping Guo2, f 1Department of Chemistry， School of Science， Beijing Jiaotong University， 2State Key Laboratory of Solid Waste Reuse for Building Materials， Beijing Building Materials Academy of Sciences Research Beijing， 100044， P.R.
It forms a honeycomb structure inside the azurite type by chemical or physical methods, which means the gypsum has the size of the interconnected holes, at the same time the cavity surface is smooth and dense thin layer which is only 10 points a few millimeters thick[1].
Physical foaming method is to inject the gypsum mixture into the water including surface active agent, mix the air into the mixture through the strong stirring, making the gypsum slurry volume increases, form the foam gypsum slurry and then pour mold. [1,5] Chemical foaming method is to inject additives into the gypsum slurry, release a large number of bubbles by chemical reaction of admixture and slurry or between several admixtures, and the gas is uniformly distributed in the gypsum mould to form porous structure.[6] This topic introduces with main raw materials of α-gypsum, using the H2O2 foaming agent to produce a kind of foaming plaster material.

One option of increasing the reactivity belitic clinker is the introduction of foreign ions into the belite structure.
The structure of belite may show situations where there is substitution of siliceous ions by foreign ones and they cause strain in the crystal lattice, thus increasing the reactivity of belite.
Moore Physical Chemistry, Praha, SNTL 1979 [2] URL: < http://database.iem.ac.ru/mincryst/> [3] W.

Research on Photochromic Materials with Synthesis and Application of 1-(2-methyl-3-benzothienyl)-2-[2-methyl-(5-ethynyl) trimethylsilane-3-thienyl] Perfluorocyclopentene Lele Ma, Hongyan Xu and Gang Liu* Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.R.China liugang0926@163.com Keywords: Photochromism; Fluorescence; Kinetics; Diarylethene.
The structure of compound 1o was confirmed by 1H NMR.
The significant difference in absorption bands of the closed-ring isomer compared to its open-ring isomer is mainly due to the increase in π conjugation, which dramatically changes the electronic structure as a whole in such a way that new electronic transitions are observed in the visible region [11,12].

Cellulose derivatives based membranes for biomedical applications Stefan Ioan Voicu1, a, Alexandru Muhulet1, b and Iulian Vasile Antoniac2,c , Marijana Simina Corobea3,d 1University Politehnica of Bucharest, Faculty of Applied Chemistry and Materials Science, Str.
Flow rates time decreasing is due to stabilization of membrane structure, under the action of water the polymer layers are compacting and becoming increasingly concentrated.
This fact is explained by non-covalent interactions occurring between nitro groups of the polymer and amine functional groups in the protein structure.

The production and polymerization of polyacrylamide Guolin JING1,a Shaowei Zhan1,b and Jing DU2,c Wen YUAN3,d 1Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, 163318, China 2Piping Department, Daqing Petrochemical Engineering Corp.Ltd., Daqing, Heilongjiang 163000, China 3the production engineering and research institue in daqing oilfield., xibin road 9 rang hu lu district daqing city heilongjiang province china ajglxueshu@yeah.net, bWeiwei_1992@Sina.com, cdujing-ds@petrochina.com.cn Keywords: polyacrylamide, polyacrylamide product,polymerization Abstract.
At 210℃ under anaerobic condition Polyacrylamide amide based change water intonitrile under anaerobic condition at 210℃,and carbonized black powder at 500℃.Adding PAM aqueous solution viscosity with the molecular weight of polymer becomes sticky and the logarithmic relationship between concentration changes of polymer[1].The polyacrylamide aqueous solution have good tolerance for electrolyte and it has good water solubility and high chemical activity to form many branched or netted structure modification in its chemical properties,because structure units containing amide and easily with other compounds to form hydrogen.Polyacrylamide through the hydrolysis of acyl group into the carboxyl group containing polymer becoming PAM.Polyacrylamide reacts with formaldehyde to produce hydroxymethyl polyacrylamide as an important cross-linked monomer and it will combine with dimethylamine to form dimethylamino-n-methacrylamide and when combine with sodium bisulfite will form sulfonated methyl polyacrylamide

Spectrophotometric method for the assay of norfloxacin lactate Yanhong Lei College of chemistry, Jiujiang University, Jiangxi,Jiujian,332005,china lei_4300@163.com Keywords: UV-spectrophotometry; norfloxacin lactate;drug analysis.
Different dosage forms and application combined with other drugs could affect its effectiveness.Norfloxacin lactate was the third generation quinolone synthetic antimicrobials, chemical structure, as shown in figure 1.[1] Fig 1 Chemica l structure o f norfloxacin lactate Because this drugcould strengthen to penetrated cells, tissues, the drug was widely distributed in the body after making preparations to absorb.

Here we report the synthesis of MgO /Fe nano particles as drug carriers, which had a core-shell structure.
References [1] Klabunde K J, Nanoscale Materials in Chemistry [J].
Structure and magnetic properties of iron nano particles stabilized in carbon.