bluuebunny/crossref_metadata_2025 huggingface dataset:
Homeostatic Turnover of Virus-Specific Memory CD8 T Cells Occurs Stochastically and Is Independent of CD4 T Cell Help
Authors: Choo Daniel K. , Murali-Krishna Kaja , Anita Rustom , Ahmed Rafi
Published: August 2010

Memory CD8 T cells persist by Ag-independent homeostatic proliferation. To examine the dynamics of this cell turnover, we transferred lymphocytic choriomeningitis virus specific memory CD8 T cells into naive mice and analyzed their in vivo division kinetics longitudinally in individual recipients.Using mathematical modeling, we determined that proliferation of this stably maintained memory CD8 T cell population was homogeneous and stochastic with a small fraction of cells completing division at any given time with an intermitotic interval of 50 d. This homeostatic turnover was comparable between memory CD8 T cells of different viral epitope specificities and also the total memory phenotype (CD44high) CD8 T cells. It is well established that CD4 T cell help is critical for maintenance of CD8 T cells during chronic infections, but recent studies have suggested that CD4 T cell help is also required for maintenance of memory CD8 T cells following acute infections. Hence, we assessed the role of CD4 T cells in Ag-independent maintenance of memory CD8 T cells. Consistent with previous reports, we found that memory CD8 T cells declined when transferred into MHC class II-deficient mice. However, their numbers were maintained stably when transferred into CD4 T cell-deficient mice. Interestingly, their homeostatic proliferation, ability to make recall responses, and phenotype were independent of CD4 T cell help because none of these qualities were affected when memory CD8 T cells were transferred and maintained in either MHC class II- or CD4-deficient recipients.
Grape-Seed Polyphenolic Extract Improves the Eye Phenotype in aDrosophilaModel of Tauopathy
Authors: Pfleger Cathie M. , Wang Jun , Friedman Lauren , Vittorino Roselle , Conley Lindsay M. , Ho Lap , Fivecoat Hayley C. , Pasinetti Giulio M.
Published: August 2010

Drosophilamodels of tauopathies have been developed by transgenically overexpressing the disease-associated forms oftau. In this paper we report for the first time that a recently developed Grape-Seed Polyphenolic Extract (GSPE) improves the eye phenotype of aDrosophilaeye model ofR406W tau. GSPE-mediated improvements in this distinctin vivoneurodegeneration model for protein misfolding/aggregation suggest that GSPE may have therapeutic value in disorders involving aberrant protein aggregation.
Reversibility of Interacting Fleming–Viot Processes with Mutation, Selection, and Recombination
Authors: Feng Shui , Schmuland Byron , Vaillancourt Jean , Zhou Xiaowen
Published: August 2010

Reversibility of the Fleming-Viot process with mutation, selection, and recombination is well understood. In this paper, we study the reversibility of a system of Fleming-Viot processes that live on a countable number of colonies interacting with each other through migrations between the colonies. It is shown that reversibility fails when both migration and mutation are non-trivial.
Laboratory evaluation of the effect of nitric acid uptake on frost point hygrometer performance
Authors: Thornberry T. , Gierczak T. , Gao R. S. , Vömel H. , Watts L. A. , Burkholder J. B. , Fahey D. W.
Published: August 2010

Abstract. Chilled mirror hygrometers (CMH) are widely used to measure water vapour in the troposphere and lower stratosphere from balloon-borne sondes. Systematic discrepancies among in situ water vapour instruments have been observed at low water vapour mixing ratios (<5 ppm) in the upper troposphere and lower stratosphere (UT/LS). Understanding the source of the measurement discrepancies is important for a more accurate and reliable determination of water vapour abundance in this region. We have conducted a laboratory study to investigate the potential interference of gas-phase nitric acid (HNO3) with the measurement of frost point temperature, and consequently the water vapour mixing ratio, determined by CMH under conditions representative of operation in the UT/LS. No detectable interference in the measured frost point temperature was found for HNO3 mixing ratios of up to 4 ppb for exposure times up to 150 min. HNO3 was observed to co-condense on the mirror frost, with the adsorbed mass increasing linearly with time at constant exposure levels. Over the duration of a typical balloon sonde ascent (90–120 min), the maximum accumulated HNO3 amounts were comparable to monolayer coverage of the geometric mirror surface area, which corresponds to only a small fraction of the actual frost layer surface area. This small amount of co-condensed HNO3 is consistent with the observed lack of HNO3 interference in the frost point measurement because the CMH utilizes significant reductions (>10%) in surface reflectivity by the condensate to determine H2O.
New approach to chemical functionalization of poly(2‐chloroxylylene) thin films
Authors: Bolognesi Alberto , Arnautov Sergey , Charmet Jérôme , Laux Edith , Keppner Herbert
Published: August 2010

3‐(8‐Octenyl)thiophene was used for successful preparation of functionalized poly‐(2‐chloro‐xylylene) (PCX) layers in the course of CVD process. The set of spectral methods used has allowed us to conclude that such modification is based on the chemical reaction of double bonds with xylylene radicals. Functionalized films were used for further chemical transformation in the course of polycondensation of 3‐octylthiophene. Resulted samples are bilayer films and polythiophene layer is chemically connected with PCX one. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Molecularly imprinted polymer microspheres with nanopore cavities prepared by precipitation polymerization as new carriers for the sustained release of dipyridamole
Authors: Javanbakht Mehran , Mohammadi Somayeh , Esfandyari‐Manesh Mehdi , Abdouss Majid
Published: August 2010

Imprinted polymers are now being increasingly considered for active biomedical uses such as drug delivery. In this work, the use of molecularly imprinted polymers (MIPs) in designing new drug delivery devices was studied. Imprinted polymers were prepared from methacrylic acid (MAA) (functional monomer), ethylene glycol dimethacrylate (cross‐linker), and dipyridamole (DIP) (as a drug template) using precipitation polymerization method. The influence of the template/functional monomer proportion and pH on the achievement of MIPs with nanopore cavities with a high enough affinity for the drug was investigated. The small pores (average 3.9 nm) in the imprinted microspheres show excellent retention properties for the target analyte. The polymeric devices were further characterized by FT‐IR, thermogravimetric analysis, scanning electron microscopy, photon correlation spectroscopy, Brunauer‐Emmett‐Teller analysis, and binding experiments. The imprinted polymers showed a higher affinity for DIP and a slower release rate than the nonimprinted polymers. The controlled releases of DIP from the prepared imprinted polymers were investigated by an in vitro dissolution test by measuring the absorbance at 284 nm by means of a UV–Visible spectrophotometer. Loaded imprinted microsphers showed very slow release in various solutions such as phosphate buffer solution (pH 6.8), HCl (pH 1.0) and mixture of HCl and MeOH at 37.0 ± 0.5°C and were able to prolong DIP release for more than two days. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Mechanical properties of hydroxyapatite‐filled ethylene vinyl acetate copolymer composites: Effect of particle size and morphology
Authors: Velayudhan Shiny , Ramesh P. , Varma H. K.
Published: August 2010

Pliable and bioactive composites made of hydroxyapatite (HAP) and ethylene vinyl acetate (EVA) copolymer were developed for the repair of defective cranium. This article describes the mechanical properties of HAP–EVA composites. The effects of HAP particle size and morphology of HAP on the properties of resultant composites were investigated using various techniques. It was found that the composites containing smaller HAP particles had higher values of tensile modulus, flexural modulus, and impact strength. Examination of the fracture surfaces revealed that only a mechanical bond existed between the filler and the matrix. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Asymmetric polyurethane membrane with in situ‐generated nano‐TiO2 as wound dressing
Authors: Chen Yi , Yan Lidan , Yuan Tun , Zhang Qiyi , Fan Haojun
Published: August 2010

For potential application as an ideal wound dressing, a novel asymmetric polyurethane membrane with in situ‐generated nano‐TiO2 (PUNT) was successfully prepared via a combination of solvent evaporation, wet phase inversion, and organic–inorganic hybridization. According to this combination method, the PUNT membrane consisted of an integral and dense skin layer supported by a porous sublayer, with nano‐TiO2 particles dispersed evenly throughout the sample. The skin layer was found to be impermeable to bacteria penetration, and the porous sublayer was designed for absorbing high amounts of exudates. Nitrogen adsorption/desorption experiment proved that extra mesopores were created in the PUNT membrane after organic–inorganic hybridization, which resulted in promoted gas permeability, water vapor transmission rate, and exudate absorption capability. The PUNT membrane, as a consequence, could accelerate gas exchange and also provide an optimal level of moisture over the wound beds without risking dehydration or exudate accumulation. Shake flask testing and cell culture (L929) assay indicated that the PUNT membrane exhibited antibacterial activity against Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus, whereas showed no cytotoxicity. From in vivo animal studies, the curative effect of PUNT membrane was found to be better than gauze and a commercial polyurethane membrane dressing. These results indicated that the PUNT membrane with multifunctions prepared in this study has potential for application as an ideal wound dressing. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Nonisothermal crystallization behavior of a biodegradable segmented copolymer constituted by glycolide and trimethylene carbonate units
Authors: Díaz‐Celorio Elena , Franco Lourdes , Puiggalí Jordi
Published: August 2010

Nonisothermal crystallization of a segmented copolymer constituted by glycolide and trimethylene carbonate units was studied from both the melt and the glass state by optical microscopy, differential scanning calorimetry and time‐resolved X‐ray diffraction techniques. Positive spherulites with a fibrilar appearance were always obtained and corresponded to the crystallization of the polyglycolide hard segments. A single crystallization regime and the kinetic parameters were inferred from optical microscopy data on crystallizations performed at different cooling/heating rates. The parameters were in good agreement with values previously deduced from isothermal experiments. Isoconversional data of melt and glass nonisothermal crystallizations were combined to obtain the Lauritzen and Hoffman parameters from calorimetric data. Results revealed again the existence of a single crystallization regime with a secondary nucleation constant close to that deduced from isothermal DSC experiments. Morphological changes occurring during the hot and cold crystallization were evaluated by time‐resolved SAXS/WAXD experiments employing synchrotron radiation. Measurements showed that significant differences on the lamellar thicknesses exist depending on the crystallization process. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Acetylsalicylic acid loading and release studies of the PMMA‐g‐polymeric oils/oily acids micro and nanospheres
Authors: Kılıçay Ebru , Çakmaklı Birten , Hazer Baki , Denkbaş Emir Baki , Açıkgöz Bektaş
Published: August 2010

Poly(methyl methacrylate) (PMMA) and PMMA copolymers derived from plant oils (Polylinseed oil‐g‐PMMA, Polysoybean oil‐g‐PMMA, Polylinoleic acid‐g‐PMMA (PLina‐g‐PMMA) and Polyhydroxy alkanoate‐ sy‐g‐Polylinoleic acid‐g‐PMMA (PHA‐g‐PLina‐g‐PMMA)) as hydrophobic polymers, a series of hydrophobic microsphere or nanosphere dispersions, were prepared by the emulsion/solvent evaporation method. The diameters of the nanospheres and microspheres were measured by dynamic light scattering with a zetasizer, optically and by scanning electron microscopy. The magnetic quality of the microspheres was determined by the electron spin resonance technique. Acetylsalicylic acid (aspirin, ASA) was used as a model drug and loaded into the microspheres during the preparation process. The effect of the stirring rate over the size and size distribution of the micro/nanospheres was evaluated, and the effects of copolymer types derived from plant oil/oily acids and the copolymer/drug ratios were evaluated. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Bamboo fiber reinforced polypropylene composites and their mechanical, thermal, and morphological properties
Authors: Chattopadhyay Sanjay K. , Khandal R. K. , Uppaluri Ramagopal , Ghoshal Aloke K.
Published: August 2010

Short bamboo fiber reinforced polypropylene composites were prepared by incorporation of various loadings of chemically modified bamboo fibers. Maleic anhydride grafted polypropylene (MA‐g‐PP) was used as compatibilizer to improve fiber–matrix adhesion. The effects of bamboo fiber loading and modification of the resin on the physical, mechanical, thermal, and morphological properties of the bamboo reinforced modified PP composites were studied. Scanning electron microscopy studies of the composites were carried out on the interface and fractured surfaces. Thermogravimetric analysis and IR spectroscopy were also carried out. At 50% volume fraction of the extracted bamboo fiber in the composites, considerable increase in mechanical properties like impact, flexural, tensile, and thermal behavior like heat deflection temperature were observed. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Study on thermal behavior of impact polypropylene copolymer and its fractions
Authors: Zhang Chunhui , Shangguan Yonggang , Chen Ruifen , Zheng Qiang
Published: August 2010

An impact polypropylene copolymer (IPC) was fractionated into three fractions using n‐octane as solvent by means of temperature‐gradient extraction fractionation. The glass transitions, melting, and crystallization behavior of these three fractions were studied by modulated differential scanning calorimeter (MDSC) and wide‐angle X‐ray diffraction (WAXD). In addition, successive self‐nucleation and annealing (SSA) technique was adopted to further examine the heterogeneity and the structure of its fractions. The results reveal that the 50°C fraction (F50) mainly consists of ethylene‐propylene random copolymer and the molecular chains may contain a few of short but crystallizable propylene and/or ethylene unit sequences; moreover, the lamellae thicknesses of the resulting crystals are extremely low. Furthermore, 100°C fraction (F100) mainly consist of some branched polyethylene and various ethylene‐propylene block copolymers in which some ethylene and propylene units also randomly arrange in certain segments, and some polypropylene segments can form crystals with various lamellae thickness. An obvious thermal fractionation effect for F100 samples after being treated by SSA process is ascribed to the irregular and nonuniform arrangement of ethylene and propylene segments. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Preparation and surface properties of core‐shell polyacrylate latex containing fluorine and silicon in the shell
Authors: Xiao Xinyan , Xu Rui
Published: August 2010

The core‐shell polyacrylate latex particles containing fluorine and silicon in the shell were successfully synthesized by a seed emulsion polymerization, using methyl methacrylate (MMA) and butyl acrylate (BA) as main monomers, dodecafluoroheptyl methacrylate (DFMA), and γ‐(methacryloxy) propyltrimethoxy silane (KH‐570) as functional monomers. The influence of the amount of fluorine and silicon monomers on the emulsion polymerization process and the surface properties of the latex films were discussed, and the surface free energy of latex films were estimated using two different theoretical models. The emulsion and its films were characterized by particle size distribution (PSD) analysis, transmission electron microscopy (TEM), Fourier transform infrared spectrum (FTIR), nuclear magnetic resonance (1H‐NMR and 19F‐NMR) spectrometry, contact angle (CA) and X‐ray photoelectron spectroscopy (XPS), differential scanning calorimetry (DSC), and thermogravimetry (TG) analysis. The results indicate that the average particle size of the latex particles is about 160 nm and the PSD is narrow, the synthesized latex particles exist with core‐shell structure, and a gradient distribution of fluorine and silicon exist in the latex films. In addition, both the hydrophobicity and thermal stability of the latex films are greatly improved because of the enrichment of fluorine and silicon at the film‐air interface, and the surface free energy is as low as 15.4 mN/m, which is comparable to that of polytetrafluoroethylene (PTFE). © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Natural and artificial weathering effects on cold‐cured epoxy resins
Authors: Lettieri Mariateresa , Frigione Mariaenrica
Published: August 2010

Three cold‐cured epoxy resins, specifically designed as structural adhesives for rehabilitation or renewal applications of civil infrastructures and cultural heritage, were submitted to natural and artificial weathering. We evaluated the variations in the thermal and mechanical properties and color changes after an artificial treatment carried out at 70°C and 75% relative humidity and after natural weathering, performed in two areas of South Italy, both located adjacent to the Mediterranean Sea. The variations in properties due to both natural exposure and artificial weathering were qualitatively similar. However, the selected artificial weathering procedure appeared excessively severe compared to the weathering that occurred after outdoor exposure. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Effect of the inner wall cooling rate on the structure and properties of a polyethylene pipe extruded at a high rotation speed
Authors: Nie Min , Bai Shibing , Wang Qi
Published: August 2010

A novel rotation extrusion processing system was self‐designed to prepare high‐performance polyethylene (PE) pipes. In this study, during the extrusion of the PE pipes at a high mandrel rotation speed, compressed air, as a cooling medium, was introduced through their interior to achieve the quick cooling of the inner wall and the effects of the inner wall cooling rate on the microstructure and mechanical properties of the obtained PE pipes were investigated. The experimental results showed that in contrast to conventional extrusion, the molecular orientation deviated from the axial direction under a high mandrel rotation speed and was fixed by the inner wall cooling; with increasing cooling rate, the orientation degree also increased. On the other hand, cooling promoted the augmentation of spherulites. So when the cooling rate reached a certain high point, the effect of cooling on the formation of spherulites was stronger than that on the fixation of the orientation. A much higher cooling rate decreased the orientation degree, which was closely related to the performance of the PE pipe. As a result, there was an optimal cooling rate of the inner wall during the rotation extrusion for better performance of the PE pipe. When the cooling rate was 1.5°C/s, the hoop strength of the PE pipe produced by the novel extrusion method increased from the original 24.1 MPa up to 37.1 MPa without a decrease in the axial strength, and the pipe's crack initiation time increased from 27 to 70 h. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Acetylation of dendrimer‐entrapped gold nanoparticles: Synthesis, stability, and X‐ray attenuation properties
Authors: Peng Chen , Wang Han , Guo Rui , Shen Mingwu , Cao Xueyan , Zhu Meifang , Zhang Guixiang , Shi Xiangyang
Published: August 2010

Functionalized dendrimer‐entrapped gold nanoparticles (Au DENPs) are of scientific and technological interest in biomedical applications. In this study, Au DENPs prepared with amine‐terminated generation 5 (G5) poly(amido amine) dendrimers as templates were subjected to acetylation to neutralize the positive surface charge of the particles. By varying the molar ratio of Au salt to G5 dendrimer, we prepared acetylated Au DENPs with a size range of 2–4 nm. Meanwhile, we attempted to add glucose to the dialysis liquid of the acetylated Au DENPs to prevent possible particle aggregation after lyophilization. The acetylated Au DENPs with different compositions (Au salt/dendrimer molar ratios) were characterized with 1H‐NMR, transmission electron microscopy, ultraviolet–visible (UV–vis) spectrometry, and ζ‐potential measurements. We show that when the molar ratio of Au salt to dendrimer was equal to or larger than 75:1, the acetylated Au DENPs showed a significant aggregation after lyophilization, and the addition of glucose was able to preserve the colloidal stability of the particles. X‐ray absorption measurements showed that the attenuation of the acetylated Au DENPs was much higher than that of the iodine‐based contrast agent at the same molar concentration of the active element (Au vs iodine). In addition, the acetylated Au DENPs enabled X‐ray computed tomography (CT) imaging of mice after intravenous injection of the particles. These findings suggest a great potential for acetylated Au DENPs as a promising contrast agent for CT imaging applications. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Preparation, characterization, and properties of environmentally friendly waterborne poly(urethane acrylate)/silica hybrids
Authors: Wu Dongmei , Qiu Fengxian , Xu Heping , Zhang Jingli , Yang Dongya
Published: August 2010

A series of environmentally friendly waterborne poly(urethane acrylate) (WPUA)/silica (SiO2) hybrids were synthesized by a sol–gel process on the basis of isophorone diisocyanate, polyester polyol (GE‐210), dimethylpropionic acid, butyl acrylate and methyl methacrylate monomers, tetraethoxysilane (TEOS), and 3‐glycidyloxypropyl trimethoxysilane (GLYMO) as a coupling agent. The mechanical properties of the WPUA/SiO2 hybrids were investigated through tensile and hardness tests. Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, atomic force microscopy, and X‐ray diffraction were used to assess the fracture surface morphology and the dispersions of the WPUA/SiO2 hybrids. The strength and hardness values of the WPUA/SiO2 hybrids were improved significantly. This was attributed to the synergistic effect of WPUA, GLYMO, and TEOS. The results show that SiO2 particles of the membranes had a uniform dispersion and formed an excellent interfacial bonding layer on their surfaces. The prepared hybrids showed good thermal stability and mechanical properties in comparison with pure WPUA and showed tunable transparence with the SiO2 fraction in the film. Through suitable adjustment of the TEOS content, some thin hybrids have potential applications as specialty materials. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
A fast method to assess the composition of a polyolefin: An application to compliance testing of food contact materials
Authors: Gillet Guillaume , Vitrac Olivier , Desobry Stéphane
Published: August 2010

For plastics materials intended to be in contact with food, recent EU regulations, 72/2002/EC and 1935/2004/EC, enforce the assessment of the migration of 502 substances of the 932 positively listed substances. As mathematical modeling has been proposed to overcome such considerable effort in particular by providing maximum acceptable concentrations in the formulation, the compliance testing problem is efficiently reduced to the identification of substances and to their extent in initial materials. This work examines a fast identification and quantification procedure based on a semisupervised deconvolution procedure of FTIR spectra of polymer extracts in dichloromethane. The inversion procedure was implemented as a Tikhonov least‐square problem and designed to work on large and open dictionary of substances by combining both spectra of reference additives and normalized responses of typical chemical functions. The sparsity of the overall solution was fulfilled with non‐negativity constraints, while traces were detected by an iterative reweighting and stochastic resonance. The whole methodology was calibrated onto 21 typical additives of polyolefins and satisfactory tested on numerical examples and on extracts of processed films in high‐density polyethylene including up to eight unknown compounds. Maps of possible confusions and biases were generated for all tested substances. The mass balance laws for molecules belonging to similar classes of additives were particularly highlighted. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
Probing Surface Sites of TiO2: Reactions with [HRe(CO)5] and [CH3Re(CO)5]
Authors: Lobo‐Lapidus Rodrigo J. , Gates Bruce C.
Published: August 2010

Two carbonyl complexes of rhenium, [HRe(CO)5] and [CH3Re(CO)5], were used to probe surface sites of TiO2 (anatase). These complexes were adsorbed from the gas phase onto anatase powder that had been treated in flowing O2 or under vacuum to vary the density of surface OH sites. Infrared (IR) spectra demonstrate the variation in the number of sites, including Ti+3OH and Ti+4OH. IR and extended X‐ray absorption fine structure (EXAFS) spectra show that chemisorption of the rhenium complexes led to their decarbonylation, with formation of surface‐bound rhenium tricarbonyls, when [HRe(CO)5] was adsorbed, or rhenium tetracarbonyls, when [CH3Re(CO)5] was adsorbed. These reactions were accompanied by the formation of water and surface carbonates and removal of terminal hydroxyl groups associated with Ti+3 and Ti+4 ions on the anatase. Data characterizing the samples after adsorption of [HRe(CO)5] or [CH3Re(CO)5] determined a ranking of the reactivity of the surface OH sites, with the Ti+3OH groups being the more reactive towards the rhenium complexes but the less likely to be dehydroxylated. The two rhenium pentacarbonyl probes provided complementary information, suggesting that the carbonate species originate from carbonyl ligands initially bonded to the rhenium and from hydroxyl groups of the titania surface, with the reaction leading to the formation of water and bridging hydroxyl groups on the titania. The results illustrate the value of using a family of organometallic complexes as probes of oxide surface sites.
Surprising Properties of a Furo‐Furanone
Authors: Calzaferri Gion , Brühwiler Dominik , Meng Tao , Dieu Le‐Quyenh , Malinovskii Vladimir L. , Häner Robert
Published: August 2010

The electronic absorption, fluorescence, and excitation spectra of furo[3,4‐c]furanone (1) have been measured in different solvents at different concentrations. We observed a complex dependence of absorption and excitation spectra as a function of the concentration in CH2Cl2 and THF due to aggregate formation. Interestingly, the fluorescence spectra were not affected. Resolving the puzzle was made possible by the fact that 1 fits perfectly into the channels of zeolite L (ZL) microcrystals to form 1–ZL guest–host composites. The geometry of the ZL channel system ensures a well‐defined orientation of the embedded dye molecules, thereby leading to a preferred orientation of their electronic transition dipole moment (ETDM) and thus to objects with pronounced optical anisotropy properties. This enabled us to understand that in solution the monomers that are present at low concentration form an aggregate in which the molecules sit on top of each other and arrange into a J‐type aggregate configuration at higher concentrations. The signature of the latter is observed in the 1–ZL composites. This seems to be the first example in which the insertion of molecules into a nanochannel microcrystal has helped in understanding the weak intermolecular interactions that take place in solution.
Reverse‐Vesicle Formation of Organic–Inorganic Polyoxometalate‐Containing Hybrid Surfactants with Tunable Sizes
Authors: Zhang Jie , Song Yu‐Fei , Cronin Leroy , Liu Tianbo
Published: August 2010

The formation of reverse‐vesicular structures of the polyoxometalate‐containing hybrid surfactants [nBu4N]3[MnMo6O18{(OCH2)3CNHCO(CH2)n−2CH3}2] (Mn‐Anderson‐Cn, n=6, 16) in nonpolar medium was achieved by titrating toluene into Mn‐Anderson‐Cn/acetonitrile (MeCN) solution. Stepwise change of the solvent polarity induces self‐association of the hydrophilic Mn‐Anderson cluster on the hybrid amphiphiles. The reverse‐vesicle formation was characterized by laser light scattering and further confirmed by transmission electron microscopy techniques, and the vesicle sizes increase with increasing toluene contents. The assembly process was accelerated at an elevated temperature. The length of the alkyl tails on the hybrid surfactants has a minor effect on the vesicle sizes, because the strong attraction between the polyoxometalate clusters is more dominant in the reverse‐vesicle formation.
In and Ex Situ Studies of the Formation of Layered Microspherical Hydrozincite as Precursor for ZnO
Authors: Bitenc Marko , Podbršček Peter , Dubček Pavo , Bernstorff Sigrid , Dražić Goran , Orel Bojan , Pejovnik Stane , Crnjak Orel Zorica
Published: August 2010

Layered ZnO microspheric particles were prepared by the thermal decomposition of layered hydrozincite (LZnHC), which was synthesized from zinc nitrate and urea in a water/PEG400 mixture. The influence of the starting reagents, their concentrations, and the amount of PEG in the water/PEG400 mixture on the particle growth was observed. The chemical aspect of the particle growth was proposed in the frame of the partial charge model (PCM), and the formation of [Zn(OH)2(OH2)4]0 and [Zn(OH)(HCO3)(OH2)3]0 was predicted for the solid phase. The assumed growth mechanism, which follows the “nonclassical crystallization” concept of a self‐assembling mechanism, was observed in situ by small‐angle X‐ray scattering (SAXS) and predicts the rapid formation of approximately 6 nm sized building units. The size of these nano building units, stable only in the reaction medium, remains nearly constant during the synthesis, as the concentration of the nano building units increases throughout the reaction. The nano building units connect into leaves of LZnHC with a thickness of 20 nm. These leaves of LZnHC are further agglomerated into porous, microsphere‐like particles with sizes up to 4 μm.
ChemInform Abstract: X‐Ray Crystallographic Study of Ce2Si2O7.
Authors: CHRISTENSEN A. N. , HAZELL R. G.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Crystal Structure of the Low‐Temperature A‐Type Modification of Pr2O3 from X‐Ray Powder and Electron Single Crystal Diffraction.
Authors: GREIS O. , ZIEL R. , BREIDENSTEIN B. , HAASE A. , PETZEL T.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Single‐Crystal X‐Ray Structure Determination of Neptunium Tetrachloride.
Authors: SPIRLET M.‐R. , JEMINE X. , GOFFART J.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Magnetic Structure of TbMn6Ge6 from Neutron Diffraction Study.
Authors: VENTURINI G. , CHAFIK EL IDRISSI B. , RESSOUCHE E. , MALAMAN B.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Preparation, Structure, and Electronic Properties of Ca11MSb9 (M: Al, Ga, In).
Authors: YOUNG D. M. , KAUZLARICH S. M.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Mass Spectral Investigation on Some Substituted 4‐Aminooxanes.
Authors: SELVARAJ K. , CHANDRASEKARA N. , RAMARAJAN K.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Benzyltriphenyllead and Dibenzyldiphenyllead.
Authors: FAHRENKAMPF U. , SCHUERMANN M. , HUBER F.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Structural Investigation of Some Lactides.
Authors: BOLTE M. , BECK H. , NIEGER M. , EGERT E.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Two Octahydroacridines.
Authors: FROEHLICH R. , GREHL M. , KRAMM‐GLADE S. , LASCHAT S.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Syntheses and Theoretical Studies of Exocyclic γ‐ Oxoalkenyltrimethylsilanes. An Approach to the Stereodefined Exocyclic Tetrasubstituted Alkenes.
Authors: NAKATANI K. , IZAWA T. , ISOE S.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Diastereoselective Hydrogenations of α‐(2′,3′,4′,6′‐Tetra‐O‐ acetyl‐β‐D‐glucopyranosyloxymethylene) Carboxylic Esters: A Route to Stereopure Aldol Derivatives.
Authors: LARSEN D. S. , SCHOFIELD A. , STOODLEY R. J. , TIFFIN P. D.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Cycloaddition of Maleic Anhydride to Isobutylidene Imines.
Authors: DRABER W. , BORN L.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Kinetics of the 1,5‐Dipolar Cyclization of 2‐Vinylpyridinium Ylides to Indolizines. Determination of Rate Parameters by Laser Flash Photolysis.
Authors: LIU M. T. H. , ROMASHIN Y. N. , BONNEAU R.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A New Synthetic Method for 2‐Silyl‐thiacycloalk‐2‐enes (II) of Different Ring Size by Intramolecular Cyclization Through Silyl Thiones.
Authors: BONINI B. F. , COMES‐FRANCHINI M. , MAZZANTI G. , RICCI A. , ROSA‐FAUZZA L. , ZANI P.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A New Rearrangement of 2,4‐Diphenyl‐3‐azabicyclo(3.3.1)nonan‐9‐one Leading to 8,10‐Diphenyl‐1,9‐diazabicyclo(5.3.0)decan‐2‐one.
Authors: JEYARAMAN R. , SENTHILKUMAR U. P.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Oxidation of Disulfides with Hydrogen Peroxide under Phase‐Transfer Catalytic Conditions.
Authors: ANISIMOV A. V. , AKHMAD M. R. , TARAKANOVA A. V. , BORISENKOVA S. A.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Asymmetric Reactions Catalyzed by Chiral Metal Complexes. Part 62. Efficient Asymmetric Hydrogenation of Imines Catalyzed by a Neutral Iridium(I) Complex of (4R,5R)‐MOD‐DIOP.
Authors: MORIMOTO T. , NAKAJIMA N. , ACHIWA K.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Mild and Convenient Reduction of Aromatic and Heteroaromatic Aldoximes with Ammonium Formate/Pd.
Authors: KACZMAREK L. , BALICKI R.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: An Easy and Efficient Synthesis of Iodohydrins from Alkenes.
Authors: DE MATTOS M. C. S. , SANSEVERINO A. M.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Reaction of Six‐Membered Azaaromatics with Allyltributyltin.
Authors: ITOH T. , HASEGAWA H. , NAGATA K. , MATSUYA Y. , OKADA M. , OHSAWA A.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Monoamination of Internal Fluoroolefins.
Authors: ZEIFMAN YU. V. , GERMAN L. S.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Useful Route to Both Enantiomers of 1‐Amino‐2‐alkanols: Synthesis of 1‐Amino‐3‐methyl‐2‐butanol from Valine.
Authors: KOPPENHOEFER B. , TRETTIN U. , WAECHTLER A.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Stereoselective Formation of Three Carbon‐Carbon Bonds by Cascade Reaction with Enolate Anion: Synthesis of Tricyclo(6.2.2.01,6)dodecane and Tricyclo(5.3.1.03,8)undecane Derivatives.
Authors: IHARA M. , MAKITA K. , TOKUNAGA Y. , FUKUMOTO K.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: O‐(ω‐(Dialkylamino)alkyl)oximes of (+)‐1,7,7‐Trimethylbicyclo(2. 2.1)heptan‐2‐one with Hypotensive, Antiinflammatory, Analgesic, Local Anesthetic and Other Activities.
Authors: SCHENONE S. , BRUNO O. , RANISE A. , BONDAVALLI F. , D'AMICO M. , VACCA C. , FALCIANI M. , FILIPPELLI A.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of Bis(difluoronitroacetoxy)iodoarenes
Authors: UVAROV V. I. , BREL' V. K.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of Brominated 2‐(tert‐Butyl‐NNO‐azoxy)anilines.
Authors: CHURAKOV A. M. , SMIRNOV O. YU. , IOFFE S. L. , STRELENKO YU. A. , TARTAKOVSKII V. A.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Aryl‐ONN‐azoxy‐α,α‐dinitroalkanes
Authors: SALAMONOV YU. B. , LUK'YANOV O. A. , BASS A. G. , STRELENKO YU. A.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: An Efficient One‐Pot Synthesis of 1,4‐Diacyl‐2,3,5,6‐ tetramethoxybenzenes via Biscuprated Precursors.
Authors: BRINGMANN G. , GEUDER T. , HARMSEN S.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Coupling and Carbonylation of Iodoaromatics and Terminal Alkynes or Alkynols Catalyzed by a Dimeric Palladium Hydroxide.
Authors: DELAUDE L. , MASDEU A. M. , ALPER H.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Novel Reaction of 1‐Aryl‐2‐(α,β‐unsaturated)diazene 1‐ Oxides with Hydrogen Chloride.
Authors: CHURAKOV A. M. , TYURIN A. YU. , GONCHAROVA E. L. , IOFFE S. L. , STRELENKO YU. A. , TARTAKOVSKII V. A.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Hofmann Rearrangement of Primary, Substituted Acetamides to Nitriles with a Hypochlorite Liquid Triphasic System.
Authors: CORREIA J.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Biaryl Synthesis via Suzuki Coupling on a Solid Support.
Authors: FRENETTE R. , FRIESEN R. W.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Formation of Bicyclic Adducts in the Reactions of Fluorinated 2,4‐ Cyclohexadien‐1‐ones with 2‐Carboxy‐benzenediazonium.
Authors: BOGACHEV A. A. , KOBRINA L. S. , SHTEINGARTS V. D.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Fullerenes ‐ The Buckyballs Conquer the Chemistry
Authors: DETTMANN J.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Practical Synthesis of 4‐Aryl‐ and 4‐Heteroarylazetidin‐2‐ones: Applications in the Synthesis of the Taxol Side Chain.
Authors: REY A. W. , DROGHINI R. , DOUGLAS J. L. , VEMISHETTI P. , BOETTGER S. D. , RACHA S. , DILLON J. L.
Published: August 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.