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Coexistence of Molecular Pd6 Triangle and Pd8 Square Self-Assembled from Naphthyl-dipyrazole with Di-palladium Motifs

16-09-2013 | Author(s): Xuan-Feng Jiang , Jia-Hua Hu , Jin Tong , Shu-Yan Yu, Inorganic Chemistry Communications, 2013

Publication date: Available online 12 September 2013 Source:Inorganic Chemistry Communications Author(s): Xuan-Feng Jiang , Jia-Hua Hu , Jin Tong , Shu-Yan Yu Two novel nanosized bipyrazolate-bridged metallo-macrocycles with dipalladium (II,II) corners, {[(bpy)Pd]8 L4}(NO3)8 and ...

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In situ ATR-IR observation of nucleation and crystal growth of KH2PO4 in aqueous solution

11-09-2013 | Congting Sun; Dongfeng Xue, CrystEngComm, 2013

In situ Attenuated Total Reflectance-Infrared (ATR-IR) spectroscopy was used to record and characterize the crystallization of KH2PO4 (KDP) from aqueous solution with pH = 1.01-6.96. In the crystallization of KDP, K+ and H2PO4- ions transform from hydrated ions, to clusters and crystalline state. ...

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Hydrolysis of mixed Ni2+-Fe3+ and Mg2+-Fe3+ solutions and mechanism of formation of MII-FeIII layered double hydroxides

11-09-2013 | Brian Grégoire; Christian Ruby; Cedric Carteret, Dalton Transactions, 2013

The hydrolytic behavior of mixed metallic solutions containing Ni2+-Fe3+ and Mg2+-Fe3+ has been studied with respect to the relative proportion of the divalent and trivalent cations in solution as well as the quantity of NaOH added. The combination of X-ray diffraction and vibrational ...

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An in-situ FTIR spectroscopic study of the electrochemical oxidation of ethanol at a Pb-modified polycrystalline Pt electrode immersed in aqueous KOH.

11-09-2013 | Paul Christensen; Steven Jones; Andrew Hamnett, Physical Chemistry Chemical Physics, 2013

A study of the mechanism of ethanol oxidation in alkaline solution on a platinum electrode modified with a upd layer of lead has been carried out using in situ FTIR spectroscopy. This study provides support for the suggestion that the adsorption mechanism of ethanol is substantially modified in ...

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Dissociation of Antimicrobial and Hemolytic Activities of Gramicidin S through N‐Methylation Modification

10-09-2013 | Yangmei Li, Nina Bionda, Austin Yongye, Phaedra Geer, Maciej Stawikowski, Predrag Cudic, Karina Martinez, Richard A. ..., ChemMedChem, 2013

Abstract β‐Sheet antimicrobial peptides (AMPs) are well recognized as promising candidates for the treatment of multidrug‐resistant bacterial infections. To dissociate antimicrobial activity and hemolytic effect of β‐sheet AMPs, we hypothesize that N‐methylation of the intramolecular hydrogen ...

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Hidden Non-Innocence in an Expanded Porphyrin: Electronic Structure of the Siamese-Twin Porphyrin’s Dicopper Complex in Different Oxidation States

10-09-2013 | Lina K. Blusch; Kathryn E. Craigo; Vlad Martin-Diaconescu; Ashley B. McQuarters; Eckhard Bill; Sebastian Dechert; Se ..., Journal of the American Chemical Society, 2013

The Siamese-twin porphyrin (2H4) is a unique pyrazole-expanded porphyrin providing two adjacent cavities each offering an {N4} binding motif. It was previously found to form stable dicopper(II) or dinickel(II) complexes where both metal ions are nested in a porphyrin-like environment. This work ...

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Mass effect on rotational diffusion of small solutes in solution

09-09-2013 | Author(s): Son C. Nguyen , Justin P. Lomont , Charles B. Harris, Chemical Physics, 2013

Publication date: 30 August 2013 Source:Chemical Physics, Volume 422 Author(s): Son C. Nguyen , Justin P. Lomont , Charles B. Harris Rotational correlation times (τc ) of two pairs of small solutes, CpM(CO)3 and M2(CO)10 (M=Mn, Re), are determined in various viscous alkane solutions by ...

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Photoisomerization Action Spectroscopy of the Carbocyanine Dye DTC+ in the Gas Phase

05-09-2013 | Brian D. Adamson; Neville J. A. Coughlan; Gabriel da Silva; Evan J. Bieske, Journal of Physical Chemistry A, 2013

Molecular photoisomerization plays a crucial role in diverse biological and technological contexts. Here, we combine ion mobility spectrometry and laser spectroscopy to characterize the photoisomerization of molecular cations in the gas phase. The target molecular ions, polymethine dye cations ...

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Preparation of PbS nano‐microcrystals with different morphologies and their optical properties

02-09-2013 | Qi Sun, Yongqian Wang, Ximing Yuan, Jun Han, Qun Ma, Fei Li, Hongyun Jin, Zhanhong Liu, Crystal Research and Technology, 2013

PbS nano‐microcrystals were prepared from Pb(OAc)2·3H2O and sulfur in a solution without any surfactant using the solvothermal process. Different morphologies, mainly including polyhedron microcrystals and sphere‐like assemblies, were characterized using a scanning electron microscope (SEM) and ...

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High Anisotropy of Flow-aligned Bicellar Membrane Systems

02-09-2013 | Author(s): Maxim Kogan , Bengt Nordén , Tamás Beke-Somfai, Chemistry and Physics of Lipids, 2013

Publication date: Available online 30 August 2013 Source:Chemistry and Physics of Lipids Author(s): Maxim Kogan , Bengt Nordén , Tamás Beke-Somfai In recent years, multi-lipid bicellar systems have emerged as promising membrane models. The fast orientational diffusion and magnetic ...

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