bluuebunny/crossref_metadata_2025_split huggingface dataset:
Adhesion interactions between poly(vinyl alcohol) and iron‐oxide surfaces: The effect of acetylation
Authors: Uner B. , Ramasubramanian M. K. , Zauscher S. , Kadla J. F. 
Published: January 2006

AbstractAtomic force microscopy with chemically functionalized colloidal probes was used to study “acid–base” interactions between poly(vinyl alcohol) (PVA) and a metal surface. By using well‐defined model surfaces, we have studied the adhesion forces between a hydroxylated surface and cantilever tips with varying hydroxyl content. Decreasing the amount of available hydroxyl groups dramatically reduced the observed adhesion force. The calculated bond energy for each cantilever tip was found to be in the range of typical hydrogen bond energies, i.e., 10–40 kJ/mol, suggesting that the acid–base interactions are predominately hydrogen bonding. Similarly, the force versus distance curves using PVA functionalized colloidal probes showed a strong dependence on the chemical functionality of the tip and the degree of acetylation of the intervening PVA. It was observed that, with an increase in the acetyl content of the PVA, the adhesion force decreased. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 99: 3528–3534, 2006
Cyanuric acid–epichlorohydrin prepolymers
Authors: Pedroso L. M. , Simões P. , Portugal A. 
Published: January 2006

AbstractIn this study, we investigated the reaction of cyanuric acid and epichlorohydrin (ECH). SnCl4was used as a catalyst. Several reaction conditions were tested, and the products were analyzed by means of Fourier transform infrared and1H‐NMR spectroscopy, hydroxyl group content, molar mass, elemental and thermal analysis, viscosity, and density. ECH reacted with the amine groups of the cyanuric acid ring to form lateral chains that contained chloroalkyl and hydroxyl end groups. Full substitution of the amine groups was observed in all of the synthesized products. The solvent used in the synthesis was found to be very important for the structure of the final prepolymers. WhenN,N‐dimethylformamide was used, relatively low‐molar‐mass prepolymers of cyanuric acid and ECH were obtained. When solvents with low dielectric constants were used, no reaction with cyanuric acid was observed. The prepared prepolymers were thermally stable up to 160°C. At this temperature, degradation started via the lateral chains. The viscosity of the products decreased as the ECH–cyanuric acid ratio increased, whereas the density remained basically constant. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 99: 3684–3691, 2006
Structural Comparison of Self‐Organized Adlayers of Ligands and Their Metal‐Coordinated Complexes on a Au(111) Surface: An STM Study
Authors: Yuan Qun‐Hui , Wan Li‐Jun 
Published: January 2006

AbstractScanning tunneling microscopy (STM) was employed to investigate the adsorption of the linear‐spacer‐bridged ligands bis(pyrrol‐2‐yl‐methyleneamine) (BPMB and BPMmB), and their ZnII‐coordinated complexes, BPMB/ZnII and BPMmB/ZnII, onto a Au(111) surface in 0.1 M HClO4 solution. Both the ligands, with different spacer bridges, and their ZnII complexes adsorb onto the Au(111) surface and self‐organize into highly ordered two‐dimensional arrays. The complexes BPMB/ZnII and BPMmB/ZnII appear in helical and triangular conformations, respectively, consistent with their chemical structures. Although the metal complexes include ligands, the assembled structures and adlayer symmetries of the ligands and complexes are totally different. The structures and intramolecular features obtained by high‐resolution STM imaging are discussed. The results should be important in fabricating surface supramolecular structures.
Spectroscopic Evidence for a Dinitrogen Complex of Gallium and Estimation of the Ga—N2 Bond Strength.
Authors: Himmel Hans‐Joerg , Hebben Nicole 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Spatially Resolved Raman and UV‐Visible‐NIR Spectroscopy on the Preparation of Supported Catalyst Bodies: Controlling the Formation of H2PMo11CoO405‐ Inside Al2O3 Pellets During Impregnation.
Authors: Bergwerff Jaap A. , van de Water Leon G. A. , Visser Tom , de Peinder Peter , Leliveld Bob R. G. , de Jong Krijn P. , Weckhuysen Bert M. 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Polyoxometalate‐Supported Y‐ and YbIII‐Hydroxo/Oxo Clusters from Carbonate‐Assisted Hydrolysis.
Authors: Fang Xikui , Anderson Travis M. , Benelli Cristiano , Hill Craig L. 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Convenient Synthesis of Fluorinated Alkanes and Cycloalkanes by Hydrogenation of Perfluoroalkylalkenes under Ultrasound Irradiation.
Authors: Carcenac Y. , Tordeux M. , Wakselman C. , Diter P. 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Lewis Acid Promoted Reactions of γ,γ‐Dialkoxyallylic Zirconium Species with Various Carbonyl Compounds.
Authors: Ito Hisanaka , Sato Azusa , Taguchi Takeo 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Cyclopropyl Building Blocks for Organic Synthesis. Part 120. [5 + 1] Cocyclization of (Cyclopropylmethylene)cyclopropanes and Other Vinylcyclopropanes with Carbon Monoxide Catalyzed by Octacarbonyldicobalt.
Authors: Kurahashi Takuya , de Meijere Armin 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Facile One‐Pot Preparation of [Hydroxy(sulfonyloxy)iodo]arenes from Iodoarenes with MCPBA in the Presence of Sulfonic Acids.
Authors: Yamamoto Yukiharu , Togo Hideo 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Copper Salt Catalyzed Addition of Arylboronic Acids to Azodicarboxylates.
Authors: Uemura Takeshi , Chatani Naoto 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Rhodium‐Catalyzed Alkylation of Terephthaldialdimine with Terminal Alkenes via C—H Bond Activation.
Authors: Lim Yeong‐Gweon , Koo Bon Tak 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Aqueous Solvents Dictate the Regiochemistry in the Photooxidations of α,β‐Unsaturated Carboxylic Acid Salts.
Authors: Stensaas Kristina L. , Bajaj Anisha 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Facile Synthesis of 2‐Alkynyl Buta‐1,3‐dienes via Sonogashira Cross‐Coupling Methodology.
Authors: Shao Li‐Xiong , Shi Min 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Thermal Reactions of 8‐Methylbicyclo[4.2.0]oct‐2‐enes: Competitive Diradical‐Mediated [1,3] Sigmatropic, Stereomutation, and Fragmentation Processes.
Authors: Bogle Xavier S. , Leber Phyllis A. , McCullough Lynne A. , Powers David C. 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Synthesis of Highly Functionalized Spiro‐Indoles by a Halogen Atom Transfer Radical Cyclization.
Authors: Stevens Christian V. , Van Meenen Ellen , Eeckhout Yves , Vanderhoydonck Bart , Hooghe Wim 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Reversible Rearrangement of 1,2,3‐Triazole‐4‐carbothioamide to 1,2,3‐Thiadiazole‐4‐carbimines.
Authors: Glukhareva T. V. , Dyudya L. V. , Pospelova T. A. , Bakulev V. A. , Tkachev A. V. , Morzherin Yu. Yu. 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Regioselective Synthesis and Estrogenicity of (.+‐.)‐8‐Alkyl‐5,7‐dihydroxy‐4‐(4‐hydroxyphenyl)‐3,4‐dihydrocoumarins.
Authors: Roelens Frederik , Huvaere Kevin , Dhooge Willem , Van Clemput Marjan , Comhaire Frank , De Keukeleire Denis 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Synthesis and Characterization of Some New 4,4′‐(1,4‐Phenylene)dipyrimidine and 6,6′‐(1,4‐Phenylene)‐di(pyridin‐2(1H)‐one) Derivatives.
Authors: Shaker Raafat M. 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Palladium‐Catalyzed Allylic Transposition of (Allyloxy) Iminodiazaphospholidines: A Formal [3,3]‐Aza‐phospha‐oxa‐Cope Sigmatropic Rearrangement for the Stereoselective Synthesis of Allylic Amines.
Authors: Lee Ernest E. , Batey Robert A. 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Unique Reactivity of α‐Alkoxy Ginkgolide Lactones to Nucleophilic Reagents: Preparation of New Lactol Derivatives.
Authors: Tanaka Katsunori , Pimentel Marc , Berova Nina , Nakanishi Koji 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Three New Polyoxypregnane Glycosides from Marsdenia tenacissima.
Authors: Deng Jun , Liao Zhixin , Chen Daofeng 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
One‐Pot Synthesis of α‐Amino Phosphonates from α‐Amino Acids and β‐Amino Alcohols.
Authors: Boto Alicia , Gallardo Juan Antonio , Hernandez Rosendo , Saavedra Carlos Javier 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Chain Elongation of Aldoses by Indium‐Mediated Coupling with 3‐Bromopropenyl Esters.
Authors: Palmelund Anders , Madsen Robert 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Stereoselective Synthesis of (1→6)‐α‐Linked Di‐ and Trisaccharides, Derivatives of 2‐Deoxysugars.
Authors: Wandzik I. , Pastuch‐Gawolek G. , Szeja W. 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Direct and Stereoselective Synthesis of β‐D‐Mannosides Using 4,6‐O‐Benzylidene‐Protected Mannosyl Diethyl Phosphite as a Donor.
Authors: Tsuda Toshifumi , Arihara Ryoichi , Sato Shinya , Koshiba Miyuki , Nakamura Seiichi , Hashimoto Shunichi 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Modular Total Synthesis of Lamellarin D (I).
Authors: Pla Daniel , Marchal Antonio , Olsen Christian A. , Albericio Fernando , Alvarez Mercedes 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Antimicrobial Biflavonoids from the Aerial Parts of Ouratea sulcata.
Authors: Pegnyemb Dieudonne Emmanuel , Mbing Josephine Ngo , Atchade Alex de Theodore , Tih Raphael Ghogomu , Sondengam Beiban Lucas , Blond Alain , Bodo Bernard 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Corallinafuran and Corallinaether, Novel Toxic Compounds from Crustose Coralline Red Algae.
Authors: Kitamura Makoto , Koyama Tomoyuki , Nakano Yoshikatsu , Uemura Daisuke 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
N‐Alkylation Reactions and Indirect Formation of Amino Functionalities in Solid‐Phase Synthesis
Authors: Olsen Christian A. , Franzyk Henrik , Jaroszewski Jerzy W. 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Syntheses of Oxetanocin A and Related Unusual Nucleosides with Four‐Membered Heterocyclic Sugars as Potential Antiviral Agents
Authors: Ichikawa Eiko , Kato Kuniki 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Syntheses and Stereoselective 1,2‐Addition Reactions of Chiral Stannyl Allenamides
Authors: Berry Craig R. , Hsung Richard P. 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
5,6‐Dihydroxyindoles and Indole‐5,6‐diones
Authors: D'Ischia Marco , Napolitano Alessandra , Pezzella Alessandro , Land Edward J. , Ramsden Christopher A. , Riley Patrick A. 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Recently Developed Organometallic Complexes of Zn, Cu(Zn, Li), Fe, Ru and Less Used Ions: Use in Selective 1,2‐or 1,4‐Additions, Transfer Hydrogenations, Aldol Reactions and Diels—Alder Reactions
Authors: Zhu H. J. , Jiang J. X. , Ren J. , Yan Y. M. , Pittman C. U. Jr. 
Published: January 2006

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access the actual ChemInform Abstract, please click on HTML or PDF.
Effect of Substrate Temperature on the Plasma Polymerization of Poly(methyl methacrylate)
Authors: Casserly T. B. , Gleason K. K. 
Published: January 2006

AbstractLow‐power, plasma‐enhanced (PE)CVD together with polymerization of methyl methacrylate (MMA) can be used to deposit thin films of poly(methyl methacrylate) (PMMA) with minimal loss of functional groups, as shown by Fourier transform infrared (FTIR) spectroscopy, X‐ray photoelectron spectroscopy (XPS), and Raman spectrometry (RS). Retention of functional groups decreases with increased substrate temperature, corresponding to decreased deposition rates. From XPS data, the calculated percentage loss of functional groups ranges from 0.9 % to 43.4 %, changing as a function of deposition conditions. RS confirms the presence of C=C bonds in the polymer backbone as a result of scission of the ester group from MMA. The thermal properties of PECVD‐produced films from MMA can be tailored by varying the substrate temperature. Onset of thermal decomposition increases with increased substrate temperature by eliminating thermally labile peroxide linkages in the polymer backbone, and by crosslinking that occurs at radical sites generated via scission of functional group bonds. The post‐anneal thicknesses of the remaining polymer is of the order of 4 nm or less, indicating that low‐power PECVD of PMMA is a viable candidate to act as a sacrificial material for air‐gap fabrication.
Atmospheric Pressure CVD of TiSe2 Thin Films on Glass
Authors: Boscher N. D. , Carmalt C. J. , Parkin I. P. 
Published: January 2006

AbstractAtmospheric pressure (AP) CVD of TiSe2 films on glass substrates was achieved by reaction of di‐tert‐butylselenide and diethyl diselenide with TiCl4 at 250–600 °C. All the films showed a TiSe2 Raman pattern with bands at 133 cm–1 and 198 cm–1. X‐ray diffraction (XRD) showed that the TiSe2 films were crystalline with cell constants close to those expected: some preferred orientation was noted at higher deposition temperatures. Energy dispersive analysis by X‐rays (EDAX) gave a Ti:Se ratio close to 1:2 for all the films formed at 550 °C, and a Ti:Se ratio close to 1:1.5 for the film formed at 600 °C. The TiSe2 films produced from diethyl diselenide and TiCl4 had a powdery, purple, matte appearance whilst reaction with di‐tert‐butylselenide formed navy‐blue reflective films at deposition temperatures below 300 °C, and dark‐purple films at deposition temperatures above 350 °C. Scanning electron microscopy (SEM) showed that the films were composed of needle‐like crystals which became longer and thicker with increasing deposition temperature. After 60 days storage in air, Raman spectra of the films produced from diethyl diselenide and TiCl4 revealed the presence of TiO2, whereas no change was noticed in the XRD and Raman spectra of the films produced from di‐tert‐butylselenide and TiCl4.
Asymmetric localization of numb in the chick somite and the influence of myogenic signals
Authors: Holowacz Tamara , Zeng Li , Lassar Andrew B. 
Published: January 2006

AbstractWhereas Notch signaling is known to play an essential role in the formation of somites, its role during later stages of somite maturation is less well understood. Here, we examine the signals and transcription factors that control the expression of the Notch antagonist, Numb, during somite maturation in the chick embryo. Numb mRNA is present in the epithelial somite and is increased in expression in the forming myotome. Numb protein displays a very specific subcellular localization and dynamic expression during somite maturation. Numb protein is asymmetrically localized in a cortical crescent on the basal side of dividing cells in the dorsomedial lip of the dermomyotome and is subsequently uniformly distributed throughout differentiated myotomal cells. Treatment of somites with either the combination of Wnt‐3a and Shh, or ectodermal signals plus noggin, both of which induce somitic myogenesis, did not significantly affect Numb transcript levels but did lead to a dramatic increase in the levels of Numb protein, which was uniformly distributed throughout the cytoplasm of the resultant myotubes. Forced expression of MyoD in somites similarly induced high levels of Numb protein throughout the cytoplasm, without affecting Numb mRNA levels. We also found that signals that promote somitic myogenesis or forced MyoD expression induced expression of the Notch ligand, Serrate‐2. Our findings suggest that Notch signals are specifically repressed in the myotome and that asymmetric expression of Numb in dividing cells of the dorsomedial lip of the dermomyotome may modulate whether these cells continue to divide or differentiate into myotomal cells. Developmental Dynamics 235:633–645, 2006. © 2006 Wiley‐Liss, Inc.
BMP and FGF‐2 regulate neurogenin‐2 expression and the differentiation of sensory neurons and glia
Authors: Ota Mitsunori , Ito Kazuo 
Published: January 2006

AbstractWe have examined the effects of signaling molecules and Notch signaling on the mechanisms regulating neurogenin (ngn) ‐2 expression. This ngn‐2 is a transcription factor that is essential for the specification of early differentiating sensory neurons in the dorsal root ganglia. In the presence of bone morphogenetic protein (BMP), anti–ngn‐2‐positive cells appeared in mouse trunk neural crest cell cultures, and they expressed Brn3, indicating that ngn‐2–expressing cells are sensory neurons. These cells did not differentiate after fibroblast growth factor (FGF) ‐2 treatment or after Notch activation. The suppression of ngn‐2 expression by FGF‐2 was recovered by treatment with a Notch signaling inhibitor. Thus, FGF‐2 may prevent ngn‐2 expression through Notch activation. Whereas BMP‐4 inhibited glial differentiation, FGF‐2 promoted gliogenesis by means of Notch activation. Our data suggest that BMP and FGF‐2 act as positive and negative regulators in ngn‐2 expression, respectively, and that these signaling molecules regulate the differentiation of sensory neurons and glia. Developmental Dynamics 235:646–655, 2006. © 2006 Wiley‐Liss, Inc.