bluuebunny/crossref_metadata_2025_split huggingface dataset:
Drug–polymer microparticles produced by supercritical assisted atomization
Authors: Reverchon Ernesto , Antonacci Alessandra 
Published: February 2007

AbstractThe supercritical assisted atomization (SAA) was proposed as a new technique to produce composite microparticles for drug controlled release. Ampicillin trihydrate and chitosan were selected as model drug and carrier, respectively, and 1% v/v acetic acid aqueous solution was used as solvent. The effect of the polymer/drug ratio on particle morphology and drug release rate was evaluated. SEM analysis indicated that non‐coalescing spherical microparticles formed by chitosan/ampicillin were produced by SAA. All coprecipitates produced have a sharp particle distribution, with diameters ranging between about 0.1 and 6 µm. SAA composite microparticles were characterized by X‐ray, DSC, EDX and UV‐vis analysis. A solid solution of the chitosan and ampicillin was produced and a stabilizing effect of the polymer on the drug has resulted that protects ampicillin from thermal degradation. A prolonged release from SAA coprecipitates with respect to raw drug and physical mixtures of chitosan and ampicillin was obtained; moreover, the polymer/drug ratio has revealed to be a controlling parameter for drug release. Drug release mechanisms characteristic of swelling‐controlled systems were observed, with ampicillin release depending on both relaxation and diffusive mechanisms. An empirical binomial equation was used to describe experimental data, showing a fair good agreement with ampicillin release data if both the relaxational and the diffusional parameters are function of the polymer/drug ratio. Biotechnol. Bioeng. 2007; 97: 1626–1637. © 2007 Wiley Periodicals, Inc.
An Optical Thermometer Based on the Delayed Fluorescence of C70
Authors: Baleizão Carlos , Nagl Stefan , Borisov Sergey M. , Schäferling Michael , Wolfbeis Otto S. , Berberan‐Santos Mário N. 
Published: February 2007

AbstractA sensitive and broad‐ranged optical thermometer, based on the thermally activated delayed fluorescence of fullerene C70, is presented. It consists of C70 molecularly dispersed in a polymer film. Several polymer matrices were investigated. In the absence of oxygen the fluorescence intensity increases markedly with temperature. At 25 °C the fluorescence intensity of C70 increases maximally by a factor of between 17 and 22, depending on the polymer, whereas at 100 °C the fluorescence intensity can be 79 times higher. In the absence of oxygen and for temperatures above 20 °C, the red fluorescence of C70 in the films is so intense that it is easily perceived by the naked eye. For the systems studied, the fluorescence intensity is very sensitive to temperature. This results in a working range from −80 to at least 140 °C in the case of C70 in poly(tert‐butyl methacrylate) (PtBMA). Perylene was incorporated into the film as an internal reference in order to enable ratiometric measurements. The sensitivity of the lifetime of the delayed fluorescence to temperature is also high and results in an even wider working range. The performance of the C70/PtBMA film was measured against a well‐known optical temperature probe, [Ru(phen)3] (phen=phenanthroline). The results show that the C70/PtBMA film is a very good system for optical temperature‐sensing over a wide range of temperatures, outperforming known standards.
Demonstration of Promoted Zinc Schlenk Equilibria, their Equilibrium Values and Derived Reactivity
Authors: Blake Alexander J. , Shannon Jonathan , Stephens John C. , Woodward Simon 
Published: February 2007

AbstractThe presence of promoted Schlenk equilibria for organozinc halide species has been explicitly demonstrated by13C NMR studies. Thus, addition of methylaluminoxane (MeAlO)n, MAO, to RZnX (R=Et, Bn, ArCH2, (CH2)3CO2Et; X=Cl, Br) leads to the formation of ZnR2and ZnX2⋅MAO. For EtZnCl, equilibration of ZnEt2and ZnX2⋅MAO is rapid at −35 °C; aKvalue of 0.19 M−1indicates the equilibrium favours ZnEt2(0.75–3.0 equiv MAO). Use of RZnX/MAO mixtures allows copper‐catalysed 1,4‐addition to 2‐cyclohexenone to be achieved, but a competing cascade reaction (two subsequent Michael additions and an intramolecular aldol reaction) leads to novel tetracyclic by‐products (characterised crystallographically in one case). Activation of EtZnCl is also achieved by ZnMe2addition and the presence of intermediate EtZnMe was observed by13C NMR spectroscopy (at equilibrium,K≈1). Asymmetric conjugate addition in this system can be realised (up to 92 % eefor additions to 2‐cyclohexenone).
Two Metal‐Rich Phosphides — The Crystal Structures of Mg8Ir23P8 and Mg13Pt26P10.
Authors: Loehken Anke , Imre Anette , Mewis Albrecht 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
In situ X‐Ray Powder Diffraction, Synthesis, and Magnetic Properties of InVO3.
Authors: Lundgren Rylan J. , Cranswick Lachlan M. D. , Bieringer Mario 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Hydrothermal Synthesis and Structure Determination of the New Vanadium Molybdenum Mixed Oxide V1.1Mo0.9O5 from Synchrotron X‐Ray Powder Diffraction Data.
Authors: Duc F. , Gonthier S. , Brunelli M. , Trombe J. C. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Ring Size and Substituent Effects in Oxyanion‐Promoted Cyclizations of Enyne‐allenes: Observation of a Myers—Saito Cycloaromatization at Cryogenic Temperature.
Authors: Waddell Michelle K. , Bekele Tefsit , Lipton Mark A. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Highly Regio‐ and Chemoselective Ring Opening of Oxa‐Bridged Piperidinones Toward Functionalized Furanones and Piperidines.
Authors: Muthusamy Sengodagounder , Krishnamurthi Janagiraman , Suresh Eringathodi 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
CeCl3×7H2O—NaI/SiO2 Promoted Beckmann Rearrangement (under Solvent‐Free and Microwave Irradiation).
Authors: Li Zheng , Lu Zhong , Ding Runbo , Yang Jingya 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Direct Coupling Reaction Between Alcohols and Silyl Compounds: Enhancement of Lewis Acidity of Me3SiBr Using InCl3.
Authors: Saito Takahiro , Nishimoto Yoshihiro , Yasuda Makoto , Baba Akio 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Advanced Fine‐Tuning of Grubbs/Hoveyda Olefin Metathesis Catalysts: A Further Step Toward an Optimum Balance Between Antinomic Properties.
Authors: Bieniek Michal , Bujok Robert , Cabaj Maciej , Lugan Noel , Lavigne Guy , Arlt Dieter , Grela Karol 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Heteropolyacid Encapsulated into Mesoporous Silica Framework for an Efficient Preparation of 1,1‐Diacetates from Aldehydes under a Solvent‐Free Condition.
Authors: Wang Jianmin , Yan Liang , Qian Guang , Yang Keli , Liu Haitao , Wang Xiaolai 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Facile and Catalytic Method for Selective Deprotection of tert‐Butyldimethylsilyl Ethers with Copper(II) Bromide.
Authors: Bhatt Suchitra , Nayak Sandip K. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Self‐Assembly of Tripodal Squaraines: Cation‐Assisted Expression of Molecular Chirality and Change from Spherical to Helical Morphology.
Authors: Ajayaghosh Ayyappanpillai , Chithra Parayalil , Varghese Reji 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Pd(II)‐Catalyzed Aerobic Allylic Oxidative Carbocyclization of Allene‐Substituted Olefins: Immobilization of an Oxygen‐Activating Catalyst.
Authors: Piera Julio , Naerhi Katja , Baeckvall Jan‐E. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Copper(II)‐Catalyzed O‐Phenylation of Alcohols with Organobismuth(V) Reagents: A Convenient Method for the Synthesis of Simple tert‐Alkyl Phenyl Ethers.
Authors: Mukaiyama Teruaki , Sakurai Naoto , Ikegai Kazuhiro 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A Simple Synthesis of α‐Methyl‐γ‐keto Acids.
Authors: Pawar B. V. , Waghmare B. Y. , Lokhande P. D. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Environmentally Friendly One‐Pot Synthesis of α‐Alkylated Nitriles Using Hydrotalcite‐Supported Metal Species as Multifunctional Solid Catalysts.
Authors: Motokura Ken , Fujita Noriaki , Mori Kohsuke , Mizugaki Tomoo , Ebitani Kohki , Jitsukawa Koichiro , Kaneda Kiyotomi 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Solvent‐Free Facile Synthesis of Novel α‐Tosyloxy β‐Keto Sulfones Using [Hydroxy(tosyloxy)iodo]benzene.
Authors: Kumar Dalip , Sundaree M. Swapna , Patel Gautam , Rao V. S. , Varma Rajender S. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Microwave‐Promoted Synthesis of Polyhydroxydeoxybenzoins in Ionic Liquids.
Authors: Hakala Ullastiina , Waehaelae Kristiina 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
PCC/SiO2—H2SO4: A Convenient System for in situ Oxidative β‐Acetamidoketone Formation from Aromatic Alcohols and Silyl Ethers.
Authors: Khodaei Mohammad Mehdi , Khosropour Ahmad Reza , Fattahpour Pyman 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Diastereoselective Synthesis of γ‐Hydroxy α,β‐Epoxyesters and Their Conversion into β‐Hydroxy α‐Sulfenyl γ‐Butyrolactones.
Authors: Rodriguez Santiago , Kneeteman Maria , Izquierdo Javier , Lopez Irakusne , Gonzalez Florenci V. , Peris Gabriel 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of 3‐Alkyl‐5‐arylamino‐6,11‐dihydro‐3H‐anthra[1,2‐d] [1,2,3]triazole‐6,11‐dione 2‐Oxides by Nitrosation of 3‐Alkylamino‐5‐arylamino‐6H‐anthra[1,9‐cd]isoxazol‐6‐ones.
Authors: Gornostaev L. M. , Dolgushina L. V. , Titova N. G. , Arnol'd E. V. , Lavrikova T. I. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Thermally Induced Rearrangement of the Arylhydrazones of Furoxan‐3‐yl Carbonyl Compounds.
Authors: Molotov Sergey I. , Epishina Margarita A. , Kulikov Alexander S. , Nelyubina Yulia V. , Lyssenko Konstantin A. , Suponitsky Kirill Yu. , Makhova Nina N. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Pd(II)‐Catalyzed Cascade Wacker—Heck Reaction: Chemoselective Coupling of Two Electron‐Deficient Reactants.
Authors: Silva Franck , Reiter Maud , Mills‐Webb Rebecca , Sawicki Marcin , Klaer Daniel , Bensel Nicolas , Wagner Alain , Gouverneur Veronique 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Unique Tandem Heck‐Lactamization Naphthyridinone Ring Formation Between Acrylanilides and Halogenated Pyridines.
Authors: Cvetovich Raymond J. , Reamer Robert A. , DiMichele Lisa , Chung John Y. L. , Chilenski Jennifer R. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
α,γ‐Diamino Acids: Asymmetric Synthesis of New Constrained 6‐Amino‐3‐azabicyclo[3.2.1]octane‐6‐carboxylic Acids.
Authors: Caputo Francesco , Cattaneo Cristian , Clerici Francesca , Gelmi Maria Luisa , Pellegrino Sara 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
4′,4′′(5′′)‐Dibenzo‐18‐crown‐6‐diaryl‐acetohydroxamic Acids
Authors: Grebenyuk A. D. , Tashmukhamedova A. K. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Denitrocyclization in the Synthesis of Dibenzothiazepinones.
Authors: Smirnov Alexey V. , Kalandadze Levan S. , Sakharov Vladimir N. , Dorogov Milhail V. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Controlled Introduction of Allylic Group to Chlorosilanes.
Authors: Li Zhifang , Cao Xiaojun , Lai Guoqiao , Liu Jinhua , Ni Yong , Wu Jirong , Qiu Huayu 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis of Cyanohydrin Trimethylsilyl Ethers of Diacylferrocenes.
Authors: Bian Zhan‐Xi , Wang Yan‐Xue , Zhao Hai‐Ying 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Guaianolides from Salvia nubicola (Lamiaceae)
Authors: Ali Muhammad Shaiq , Ahmed Waqar , Armstrong Andrea Florence , Ibrahim Syed Amir , Ahmed Shakeel , Parvez Masood 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
2‐Amino‐7‐chloro‐2′‐deoxytubercidin
Authors: Seela Frank , Peng Xiaohua , Eickmeier Henning , Reuter Hans 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis and Antitumor Activity of New Muricatacin and Goniofufurone Analogues.
Authors: Popsavin Velimir , Sreco Bojana , Krstic Ivana , Popsavin Mirjana , Kojic Vesna , Bogdanovic Gordana 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Lignans from the Roots and Rhizomes of Clematis manshurica.
Authors: Shi She‐Po , Jiang Dan , Dong Cai‐Xia , Tu Peng‐Fei 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Prediction of pH‐Dependent Aqueous Solubility of Druglike Molecules.
Authors: Hansen Niclas Tue , Kouskoumvekaki Irene , Joergensen Flemming Steen , Brunak Soeren , Jonsdottir Svava Osk 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
In situ Microstructure Control of Oriented Layered Double Hydroxide Monolayer Films with Curved Hexagonal Crystals as Superhydrophobic Materials.
Authors: Chen Hongyun , Zhang Fazhi , Fu Shanshan , Duan Xue 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Traditional and Modern Approaches to the Synthesis of Quinoline Systems by the Skraup and Doebner—Miller Methods
Authors: Yamashkin S. A. , Oreshkina E. A. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Bis(organosulfanyl)‐ and Bis(organoselanyl)methyllithium Compounds
Authors: Najera Domingo Carmen , Yus Astiz Miguel 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Organic Molecule Adsorption on Solid Surfaces: Chemical Bonding, Mutual Polarization and Dispersion Interaction
Authors: Schmidt W. G. , Seino K. , Preuss M. , Hermann A. , Ortmann F. , Bechstedt F. 
Published: February 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Synthesis, Thermal, Electrical and Catalytic Studies of Some Transition Metal Polychelates of Bis‐bidentate Schiff Base
Authors: Bansod Ashish , Aswar Anand 
Published: February 2007

AbstractPolychelates of Mn(II), Fe(II), Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) with the bis salen‐type ligand derived from 4,4′‐bis[(salicylaldehyde‐5)azo]biphenyl and 1,4‐diaminobutane have been synthesized. All the polychelates have been characterized by elemental analysis, magnetic susceptibility measurements, IR, electronic spectra and thermogravimetric studies. All the complexes isolated in solid state are dark coloured and insoluble in water and common organic solvents. The ligand behaves as a bis‐bidentate molecule coordinating through the phenolic oxygen and azomethine nitrogen atoms. The thermal decomposition of these metal complexes was investigated by thermogravimetric analysis and data have been analyzed for kinetic parameters using Broido equation. The solid‐state electrical conductivity of the ligand and its polychelates in the form of compressed pellet was studied in the temperature range from 313 to 413 K. All the polychelates were found to show semiconducting nature. The Mn(II), Fe(II), Co(II) and Ni(II) polychelates have been assessed for the catalytic epoxidation of styrene.
Tris(2,2′‐bipyridyl) Ruthenium(II) Doped Silica Film Modified Indium Tin Oxide Electrode and Its Electrochemiluminescent Properties
Authors: Wei Hui , Du Yan , Kang Jian‐Zhen , Xu Guo‐Bao , Wang Er‐Kang 
Published: February 2007

AbstractAn approach was reported to synthesize silica hybridized ruthenium bipyridyl complex through amidation reaction by covalent attachment of bis(bipyridyl)‐4,4′‐dicarboxy‐2,2′‐bipyridyl‐ruthenium to (3‐aminopropyl)‐triethoxy‐ silane. The hybrid complex then was gelatinized through acid catalytic hydrolysis method and a sol‐gel modified indium tin oxide electrode was prepared via spin coating technique. As prepared indium tin oxide electrode possesses good stability therein with excellent electrochemiluminescence behavior.
Effects of Ti and Zr Substituted on the Electrochemical Characteristics of MgNi‐Based Alloy Electrodes
Authors: Feng Yan , Jiao Li‐Fang , Yuan Hua‐Tang , Zhao Ming 
Published: February 2007

AbstractMg‐based hydrogen storage alloys MgNi, Mg0.9Ti0.1Ni, and Mg0.9Ti0.06Zr0.04Ni were successfully prepared by means of mechanical alloying (MA). The structure and the electrochemical characteristics of these Mg‐based materials were studied. The X‐ray diffraction (XRD) result shows that the main phases of the alloys exhibit amorphous structure. The scanning electron microscopy (SEM) photograph shows that the particle size of Ti and Zr substituted alloys was about 2–4 µm in diameter. The cycle lives of the alloys were prolonged by adding Ti and Zr. After 50 charge‐discharge cycles, the discharge capacity of Mg0.9Ti0.06Zr0.04Ni was 91.74% higher than that of MgNi alloy and 37.96% higher than that of Mg0.9Ti0.1Ni alloy. The main reason for the electrode capacity decay is the formation of Mg(OH)2 (product of Mg corrosion) at the surface of alloy. The potentiodynamic polarization result indicates that Ti and Zr doping improves the anticorrosion in an alkaline solution. The electrochemical impedance spectroscopy (EIS) results suggest that proper amount of Ti and Zr doping improves the electrochemical catalytic activity significantly.