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Arene Molecule (arene + molecule)
Selected AbstractsInduced Sensitivity and Selectivity in Thin-Film Transistor Sensors via Calixarene LayersADVANCED MATERIALS, Issue 21 2010Anatoliy N. Sokolov Sensors based on organic field-effect transistors (OFETs) must overcome challenges in reproducibility, sensitivity, and selectivity. Here we describe an approach to increase the sensitivity and induce selectivity within an existing (OFET) through the incorporation of an evaporated sensor layer based on a calix[n]arene molecule. The mild method does not influence device properties, and is amendable to incorporation into reproducible, commercial transistors. [source] An Efficient Bismuth(III) Chloride-Catalyzed Synthesis of 1,1-Diarylalkenes via Friedel,Crafts Reaction of Acyl Chloride or Vinyl Chloride with ArenesADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 14 2006Hongbin Sun Abstract In the presence of catalytic amount of bismuth(III) chloride, the reactions of acyl chlorides or vinyl chlorides with arenes afforded 1,1-diarylalkenes in 25,82,% isolated yield. In the case of the reaction of acyl chlorides with arenes, the procedure includes an initial Friedel,Crafts acylation, subsequent formation of vinyl chlorides and final Friedel,Crafts-type vinylation of another arene molecule with vinyl chloride. This paper reports the first Lewis acid-catalyzed cleavage of the CCl bond of vinyl chloride and its application in the synthesis of multiply subtituted alkenes. [source] Calixarene-entrapped nanoemulsion for uranium extraction from contaminated solutionsJOURNAL OF PHARMACEUTICAL SCIENCES, Issue 3 2010Aurélie Spagnul Abstract Accidental cutaneous contamination by actinides such as uranium occurring to nuclear power plant workers can lead to their dissemination in other tissues and induce severe damages. Until now, no specific emergency treatment for such contamination has been developed. The aim of the present work was to formulate a tricarboxylic calix[6]arene molecule, known to exhibit good affinity and selectivity for complexing uranium, within a topical delivery system for the treatment of skin contamination. Since calixarene was shown to reduce oil/water interfacial tension, we have designed an oil-in-water nanoemulsion, taking advantage of the small droplet size offering a high contact surface with the contaminated aqueous medium. Characterization of the calixarene nanoemulsion was performed by determination of the oily droplet size, zeta potential and pH, measured as a function of the calixarene concentration. The obtained results have confirmed the surface localization of calixarene molecules being potentially available to extract uranyl ions from an aqueous contaminated solution. In a preliminary experiments, the calixarene nanoemulsion was used for the removal of free uranium from an aqueous contaminated solution. Results showed that the calixarene nanoemulsion extracted up to 80,±,5% of uranium, which demonstrates the potential interest of this delivery system for uranium skin decontamination. © 2009 Wiley-Liss, Inc. and the American Pharmacists Association J Pharm Sci 99: 1375,1383, 2010 [source] Self-Assembly of p -Sulfonatocalix[4]arene and a Ag,hmt Coordination Polymer into a Porous StructureEUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 11 2008Guo-li Zheng Abstract A novel porous material constructed from p -sulfonatocalix[4]arene molecules and a AgI coordination polymer has been structurally characterized. The porous supramolecular complex features a bilayer arrangement of p -sulfonatocalix[4]arene molecules linked by a AgI,hmt (hmt: hexamethylenetetramine) coordination polymer through metal,ligand bonding, hydrogen bonding and host,guest interactions.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008) [source] | ||||||||||