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Design, Synthesis and Characterization of Coordination Polymer from [Cu(DMF)4(SCN)2] as a Precursor

12-12-2014 | Xiaotong Liu, Feng Zhou, Qiuxuan Zhou, Lihua Wang, Yong Zhang, Qingfeng Xu, Jianmei Lu, Chinese Journal of Chemistry, 2014

Abstract This paper is focused on investigation of coordination polymers constructed by Cu(II) and rigid pyridyl ligands, such as 4,4′‐bipyridyl‐1,2,4‐triazole (Hpytz) and 1,10‐phenanthroline (phen) from a mononuclear precursor [Cu(DMF)4(NCS)2] (1). As expected, the complex was self‐assembled ...


Properties of aligned poly(L‐lactic acid) electrospun fibers

12-12-2014 | Bin Mao, Keifer Geers, Sophia Hu, Marlet Mancera, Myra Sandoval, Joshua Port, Yazhe Zhu, Peggy Cebe, Journal of Applied Polymer Science, 2014

ABSTRACT Poly(L‐lactic acid) (PLLA)‐aligned fibers with diameters in the nano‐ to micrometer size scale are successfully prepared using the electrospinning technique from two types of solutions, different material parameters and working conditions. The fiber quality is evaluated using scanning ...


Homoleptic Tris(α,ω-alkanediyl)yttriates of the Type [{Li(dme)}3{Y(CH2-X-CH2)3}] (X = C2H4, C3H6, Si(CH3)2)

12-12-2014 | Reinald Fischer; Stefan Bode; Mathias Köhler; Jens Langer; Helmar Görls; Martin D. Hager; Ulrich S. Schubert; Matthi ..., Organometallics, 2014

The metathesis reaction of anhydrous yttrium(III) chloride with ethereal solutions of 1,4-dilithiobutane, 1,5-dilithiopentane as well as bis(lithiomethyl)dimethylsilane in the molar ratio of 1:3 yields the homoleptic yttriates [{Li(dme)}3{Y(C4H8)3}] (2), [{Li(dme)}3{Y(C5H10)3}] (3), and ...


MALDI-TOF MS Imaging of Metabolites with a N-(1-Naphthyl) Ethylenediamine Dihydrochloride Matrix and Its Application to Colorectal Cancer Liver Metastasis

12-12-2014 | Jianing Wang; Shulan Qiu; Suming Chen; Caiqiao Xiong; Huihui Liu; Jiyun Wang; Ning Zhang; Jian Hou; Qing He; Zongxiu Nie, Analytical Chemistry, 2014

Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI) is a label-free technique for identifying multiplex metabolites and determining both their distribution and relative abundance in situ. Our previous study showed that N-(1-naphthyl) ethylenediamine dihydrochloride ...


Bis(N‐Confused Porphyrin) as a Semirigid Receptor with a Chirality Memory. A Two‐Way Host Enantiomerization through Point‐to‐Axial Chirality Transfer

11-12-2014 | Piotr J. Chmielewski, Marta Siczek, Marcin Stępień, Chemistry - A European Journal, 2014

Abstract The adduct formation of protonated bis(N‐confused porphyrin) (BNCP, 3,3′‐bis(meso‐tetratolyl‐2‐aza‐21‐carbaporphyrin) with chiral anions, carboxylic acids, and alcohols was studied in solution by means of 1H NMR and circular dichroism (CD) spectroscopic analysis and DFT methods. The ...


Influence of preparation methods on the electrical and nanomechanical properties of poly(methyl methacrylate)/multiwalled carbon nanotubes composites

11-12-2014 | Katarína Mosnáčková, Zdenko Špitálský, Jaroslav Kuliček, Jan Prokeš, Amalia Skarmoutsou, Costas A. Charitidis, Mária ..., Journal of Applied Polymer Science, 2014

ABSTRACT Poly(methyl methacrylate)/multiwalled carbon nanotubes (PMMA/MWCNT) composites were prepared by two different methods: melt mixing and solution casting. For solution casting, two different solvents, toluene and chloroform, were used to prepare PMMA solutions with different ...


Bipolar Gold(III) Complexes for Solution-Processable Organic Light-Emitting Devices with a Small Efficiency Roll-Off

11-12-2014 | Man-Chung Tang; Daniel Ping-Kuen Tsang; Yi-Chun Wong; Mei-Yee Chan; Keith Man-Chung Wong; Vivian Wing-Wah Yam, Journal of the American Chemical Society, 2014

A new class of bipolar alkynylgold(III) complexes containing triphenylamine and benzimidazole moieties has been synthesized, characterized, and applied as phosphorescent dopants in the fabrication of solution-processable organic light-emitting devices (OLEDs). The incorporation of methyl groups ...


Including Thermal Disorder of Hydrogen Bonding to Describe the Vibrational Circular Dichroism Spectrum of Zwitterionic l-Alanine in Water

11-12-2014 | Ednilsom Orestes; Carlos Bistafa; Roberto Rivelino; Sylvio Canuto, Journal of Physical Chemistry A, 2014

The vibrational circular dichroism (VCD) spectrum of l-alanine amino acid in aqueous solution in ambient conditions has been studied. The emphasis has been placed on the inclusion of the thermal disorder of the solute–solvent hydrogen bonds that characterize the aqueous solution condition. A ...


Magnetically Recoverable Efficient Demulsifier for Water‐in‐Oil Emulsions

10-12-2014 | Yuning Chen, Xin Lin, Na Liu, Yingze Cao, Fei Lu, Liangxin Xu, Lin Feng, ChemPhysChem, 2014

Abstract A magnetically recoverable and efficient demulsifier is shown to demulsify surfactant‐stable water‐in‐oil emulsions rapidly. Ferroferric oxide (Fe3O4) particles are firstly coated by amorphous silicon dioxide (SiO2), and further functionalized with a commercial dodecyltrimethoxysilane ...


Effect of High‐Energy Electropulsing on the Phase Transition and Mechanical Properties of Two‐Phase Titanium Alloy Strips

10-12-2014 | Xiaoxin Ye, Zion T. H. Tse, Guoyi Tang, Guolin Song, Advanced Engineering Materials, 2014

The effect of high‐energy electropulsing treatment (EPT) on the phase transition and mechanical properties of the two‐phase Ti–6Al–4V alloy strips (in the solid solution state) was studied with the help of uniaxial tensile machine, X‐ray diffraction, optical stereo‐microscope, scanning electron ...


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