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Biobased Copolymers Composed of l‐Lactic Acid and Side‐Chain‐Substituted Lactic Acids: Synthesis, Properties, and Solid‐State Structure

25-08-2013 | Hironori Marubayashi, Shigeo Asai, Takaaki Hikima, Masaki Takata, Tadahisa Iwata, Macromolecular Chemistry and Physics, 2013

Various biobased copolyesters composed of l‐lactic acid (LLA) and side‐chain‐substituted lactic acids (SLAs) with high molecular weight and LLA‐rich composition are synthesized by direct solution polycondensation. Glycolic acid, 2‐hydroxyisobutyric acid, (S)‐2‐hydroxy‐3‐methylbutanoic acid ...


Characterization and performance of dodecyl amine functionalized graphene oxide and dodecyl amine functionalized graphene/high‐density polyethylene nanocomposites: A comparative study

22-08-2013 | Peng‐Gang Ren, Hao Wang, Hua‐Dong Huang, Ding‐Xiang Yan, Zhong‐Ming Li, Journal of Applied Polymer Science, 2013

ABSTRACT Dodecyl amine (DA) functionalized graphene oxide(DA‐GO) and dodecyl amine functionalized reduced graphene oxide (DA‐RGO) were produced by using amidation reaction and chemical reduction, then two kinds of well dispersed DA‐GO/high‐density polyethylene (HDPE) and DA‐RGO/HDPE ...


Hexagonal Crown-Capped Zinc Oxide Micro Rods: Hydrothermal Growth and Formation Mechanism

20-08-2013 | Lijing Zhang; Xiaomiao Liu; Chong Geng; Huajing Fang; Zhipeng Lian; Xiaoqing Wang; Dezhong Shen; Qingfeng Yan, Inorganic Chemistry, 2013

Hexagonal crown-capped ZnO micro rods were successfully prepared by a facile low-temperature hydrothermal method. The as-prepared ZnO micro rods are 4.4–5.2 μm in length and 2.4–3.6 μm in diameter, possessing a single-crystal hexagonal structure. The morphology evolution and structure changes ...


Molecular Construction Kit for Tuning Solubility, Stability and Luminescence Properties: Heteroleptic MePyrPHOS-Copper Iodide-Complexes and their Application in Organic Light-Emitting Diodes

20-08-2013 | Daniel Volz; Daniel M. Zink; Tobias Bocksrocker; Jana Friedrichs; Martin Nieger; Thomas Baumann; Uli Lemmer; Stefan ..., Chemistry of Materials, 2013

Organic light-emitting diodes (OLEDs) are currently being commercialized for lighting and display applications, but more work has to be done. In addition to the ongoing optimization of materials and devices in terms of efficiency and lifetime, the substitution of processing steps involving vacuum ...


Heteroleptic Alkyl and Amide Iminoanilide Alkaline Earth and Divalent Rare Earth Complexes for the Catalysis of Hydrophosphination and (Cyclo)Hydroamination Reactions

19-08-2013 | Bo Liu, Thierry Roisnel, Jean‐François Carpentier, Yann Sarazin, Chemistry - A European Journal, 2013

Abstract [{N^N}M(X)(thf)n] alkyl (X=CH(SiMe3)2) and amide (X=N(SiMe3)2) complexes of alkaline earths (M=Ca, Sr, Ba) and divalent rare earths (YbII and EuII) bearing an iminoanilide ligand ({N^N}−) are presented. Remarkably, these complexes proved to be kinetically stable in solution. X‐ray ...


Solution-Processed Zinc Phosphide (α-Zn3P2) Colloidal Semiconducting Nanocrystals for Thin Film Photovoltaic Applications

19-08-2013 | Erik J. Luber; Md Hosnay Mobarok; Jillian M. Buriak, ACS Nano, 2013

Zinc phosphide (Zn3P2) is a promising earth-abundant material for thin film photovoltaic applications, due to strong optical absorption and near ideal band gap. In this work, crystalline zinc phosphide nanoparticles are synthesized using dimethylzinc and tri-n-octylphosphine as precursors. ...


Amorphous carbon encapsulation of metal aerosol nanoparticles for improved collection and prevention of oxidation

16-08-2013 | William J. Scharmach, Munish K. Sharma, Raymond D. Buchner, Vasilis Papavassiliou, Gaurav N. Vajani, Mark T. Swihart, AIChE Journal, 2013

ABSTRACT We present a technique to encapsulate silver nanoparticles in an amorphous carbon matrix to facilitate nanoparticle collection and limit nanoparticle oxidation. A carbon source added to the metal salt precursor solution decomposes to generate amorphous carbon, which forms large ...


The Chelating Behaviour of 3‐(4‐X‐Phenyl)‐2‐sulfanylpropenoic Acids with the PbII Ion – Relevance of the Lone Electron Pair in the Supramolecular Structures of the 2:1 Complexes

16-08-2013 | José S. Casas, M. Victoria Castaño, Maria D. Couce, Agustín Sánchez, José Sordo, M. Dolores Torres, Ezequiel M. Vázq ..., European Journal of Inorganic Chemistry, 2013

Abstract The interaction of 3‐(4‐X‐phenyl)‐2‐sulfanylpropenoic acids [H2(X‐pspa); X = –F, –Cl, –Br, –I, –OCH3, –OCF3, –OH] with lead(II) acetate in an alcoholic medium was explored in the search for new chelating agents for the Pb2+ ion. The direct reactions afforded [Pb(X‐pspa)] complexes in ...


Pd–Co/MWCNTs Catalyst for Electrooxidation of Hydrazine in Alkaline Solution

15-08-2013 | J. Liu, R. Liu, C. L. Yuan, X. P. Wei, J. L. Yin, G. L. Wang, D. X. Cao, Fuel Cells, 2013

Abstract Multiwall carbon nanotubes supported Pd–Co electrocatalysts (Pd–Co/MWCNTs) for hydrazine electrooxidation in alkaline electrolytes were prepared. Their morphology and structure were characterized by scanning electron microscopy, transmission electron microscope, and X‐ray diffraction. ...


Preparation and Antibacterial Activities of Porous Silver‐doped β‐Tricalcium Phosphate Bioceramics

14-08-2013 | Shen Liu, Cunyi Fan, Fangchun Jin, Li Zhao, Kerong Dai, Jianxi Lu, International Journal of Applied Ceramic Technology, 2013

Infection is still a major concern in bone implants, especially in the implants with porous structures. As silver shows superior and broad‐spectrum antibacterial activity, porous silver‐doped β‐tricalcium phosphate (β‐TCP) bioceramics are prepared with 5% and 10% nanometer silver. The ...


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