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Peptaibol Antiamoebin I: Spatial Structure, Backbone Dynamics, Interaction with Bicelles and Lipid‐Protein Nanodiscs, and Pore Formation in Context of Barrel‐Stave Model

17-05-2013 | Zakhar O. Shenkarev, Alexander S. Paramonov, Ekaterina N. Lyukmanova, Albina K. Gizatullina, Anastasia V. Zhuravleva ..., Chemistry & Biodiversity, 2013

Abstract Antiamoebin I (Aam‐I) is a membrane‐active peptaibol antibiotic isolated from fungal species belonging to the genera Cephalosporium, Emericellopsis, Gliocladium, and Stilbella. In comparison with other 16‐amino acid‐residue peptaibols, e.g., zervamicin IIB (Zrv‐IIB), Aam‐I ...

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Multinuclear Magnetic Resonance Spectroscopy and Density Function Theory Calculations for the Identification of the Equilibrium Species in THF Solutions of Organometallic Complexes Suitable As Electrolyte Solutions for Rechargeable Mg Batteries

17-05-2013 | Nir Pour; Yossi Gofer; Dan T. Major; Keren Keinan-Adamsky; Hugo E. Gottlieb; Doron Aurbach, Organometallics, 2013

We present a multinuclear nuclear magnetic resonance (NMR) and density functional theory (DFT) study of electrolyte solutions based on organometallic complexes with aromatic ligands. These solutions constitute a unique electrolyte family possessing a wide electrochemical window, making them ...

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Effect of Citric Acid and Starch as Emulsifier on Phase Formation and Crystallite Size of Lanthanum Oxide Nanoparticles

16-05-2013 | Hamidreza Bojari, Azim Malekzadeh, Mahnaz Ghiasi, Ahmad Gholizadeh, Ramin Azargohar, Ajay Kumar Dalai, Crystal Research and Technology, 2013

Lanthanum oxide nanoparticles were synthesized via thermal decomposition method of the lanthanum nitrate in the presence of citric acid or starch as emulsifier. The effects of emulsifier and calcination temperature were investigated on the phase transformation and particle size distribution ...

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Synthesis and Properties of Poly(p‐phenylene ethynylene)s with Oxidation‐ and Reduction‐Sensitive Moieties

15-05-2013 | Michael Schroeter, Marc Behl, Christian Kaiser, Andreas Lendlein, Macromolecular Chemistry and Physics, 2013

Abstract The synthesis of redox‐sensitive poly(p‐phenylene ethynylene)s (rsPPEs) bearing protected quinones in their backbone by the Sonogashira coupling reaction is described. The rsPPEs show excellent solubility in toluene, tetrahydrofurane, and chloroform. Cleavage of the protection ...

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2D‐IR spectroscopy: an additional dimension to investigate ultrafast structural dynamics

15-05-2013 | Manuela Lima, Marco Candelaresi, Paolo Foggi, Journal of Raman Spectroscopy, 2013

We describe the theory, some experimental details and the data analysis procedures of two‐dimensional infrared (2D‐IR) spectroscopy. A brief description of an application of the technique to the study of a dipeptide in solution is also reported. Like multi‐dimensional NMR spectroscopy, ...

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Molecularly Imprinted Poly(N-Vinyl Imidazole) Based Polymers Grafted onto Nonwoven Fabrics for Recognition/Removal of Phloretic Acid

13-05-2013 | Author(s): Ma. Llorina Rañada , Meshude Akbulut , Lucille Abad , Olgun Güven, Radiation Physics and Chemistry, 2013

Publication date: Available online 10 May 2013 Source:Radiation Physics and Chemistry Author(s): Ma. Llorina Rañada , Meshude Akbulut , Lucille Abad , Olgun Güven A solution of N-vinyl imidazole (VIm), ethylene glycol dimethylacrylate (EGDMA), and phloretic acid ...

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Identifying Nanoscale M13 Clusters in the Solid State and Aqueous Solution: Vibrational Spectroscopy and Theoretical Studies

09-05-2013 | Milton N. Jackson, Jr.; Lindsay A. Wills; I-Ya Chang; Matthew E. Carnes; Lawrence F. Scatena; Paul Ha-Yeon Cheong; D ..., Inorganic Chemistry, 2013

Raman spectroscopy, infrared spectroscopy, and quantum mechanical computations were used to characterize and assign observed spectral features, highlight structural characteristics, and investigate the bonding environments of [M13(μ3-OH)6(μ2-OH)18(H2O)24](NO3)15 (M = Al or Ga) nanoscale ...

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Steps towards removing some obstacles of industrialization of CIGS solar cells

06-05-2013 | Huey‐Liang Hwang, Bae‐Heng Tseng, Letha Ayra Jagadhamma, Yafei Zhang, physica status solidi (c), 2013

Abstract Fundamental obstacles such as low production yields, non‐reproducibility, and non‐uniformity over large area are encountered in the commercialization of copper indium gallium (di) selenide (CIGS) solar cell. The precise control and manipulation of the thin film's local chemical ...

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Synthesis and Spectral Electrochemical Properties of a Symmetrical Tin-Bridged [3.3]Ferrocenophane

06-05-2013 | Jon Ward; Saif Al-Alul; Matthew W. Forbes; Timothy E. Burrow; Daniel A. Foucher, Organometallics, 2013

The symmetrical bisferrocene 1,1,14,14-tetra-n-butyl-2,2,13,13,15,15,26,26-octamethyl-1,2,13,14,15,26-hexastanna[3.3]ferrocenophane ([(η5-C5H4)Fe(η5-C5H4SnMe2Sn(n-Bu)2SnMe2)]2, 8) was synthesized in good yield (82%) from the reductive coupling reaction of 1,1′-bis(dimethylstannyl)ferrocene, ...

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Well‐defined thermoresponsive dendritic polyamide/poly(N‐vinylcaprolactam) block copolymers

03-05-2013 | Yunmei Bi, Caixian Yan, Lidong Shao, Yufei Wang, Yongcui Ma, Gang Tang, Journal of Polymer Science Part A: Polymer Chemistry, 2013

ABSTRACT The first‐ and second‐generation well‐defined thermoresponsive amphiphilic linear–dendritic diblock copolymers based on hydrophilic linear poly(N‐vinylcaprolactam) and hydrophobic dendritic aromatic polyamide have been synthesized via reversible addition fragmentation chain ...

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