Journal Title
Title of Journal: J Inorg Organomet Polym
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Abbravation: Journal of Inorganic and Organometallic Polymers and Materials
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Authors: K RózgaWijas U Mizerska W Fortuniak J Chojnowski R Hałasa W Werel
Publish Date: 2007/07/03
Volume: 17, Issue: 4, Pages: 605-613
Abstract
Three types of silica particles modified with vinyl groups were obtained i xerogel formed by hydrolytic polycondensation of the mixture of tetramethoxysilane TMOS and 1117−tetramethoxy357trimethyl357trivinyltetrasiloxane ii mesoporous silica obtained from the same precursors in the presence of the cetyltrimethylammonium bromide CTAB and iii commercial Fluka silica gel 60A with a vinyltriethoxysilanetreated surface Vinyl groups on these silica materials were transformed into silyl chloride by hydrosilylation with HMe2SiCl These groups were used to graft living polysiloxane that was synthesized by anionic ringopening polymerization of 246tri3chloropropyl246trimethylcyclotrisiloxane and initiated by BuLi Chloropropyl groups on the grafted polymer were used to quaternize NNdimethylnoctylamine Silica particles with grafted polysiloxane having quaternary ammonium salt QAS groups pendant to polymer chains were obtained Silica material with QAS groups directly attached to the surface were generated by the action of NNdimethylnoctylamine on particles obtained by the sol–gel process involving tetraethoxysilane TEOS with 3chloropropyltriethoxysilane The bacteriocidal properties of all these materials were tested in water suspension against five representative strains for Grampositive and Gramnegative bacteria Some of the silica–polysiloxane hybrid materials have good antibacterial properties against Grampositive strains but not as good as the nontethered QASsubstituted polysiloxane in water solution The QAS groups that are directly bonded to the silica material surface are inactive
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- Metal-Induced Structural Switching of a Folded Quinone-Sandwiched Porphyrin
- Sonochemical Synthesis of a New Lead(II) Coordination Polymer with 2-Quinoline Carboxylate Ligand: A Precursor for the Preparation of Nano-structured Lead(II) Oxide
- Sonochemical Synthesis of Two New Nano-structured Cadmium(II) Supramolecular Complexes
- Controllable Synthesis of NiSe 2 Nanostructures via Hydrothermal Process for Photocatalytic and Solar Cell Applications
- Co-sensitization Promoted Light Harvesting for Dye-Sensitized Solar Cells
- Synthesis, Characterization and Biological Studies of Oil Based Tin Polymer
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- Synthesis, Structures and Properties of Novel Platinum(II) Acetylide Complexes and Polymers with Tri(tolyl)phosphine as the Auxiliary Ligand
- Gamma Radiation Synthesis and Characterization of Starch Based Polyelectrolyte Hydrogels Loaded Silver Nanoparticles
- Ionic Conductivity of Cross-linked Polymethacrylate Derivatives/Cyclophosphazenes/Li + Salt Complexes
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- Synthesis and Characterization of Platinum Nanoparticles on PT-Coated Mesoporous Silica as an Electrocatalyst for Direct Methanol Fuel Cells
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- Synthesis of Metal-containing Polymers via Ring Opening Metathesis Polymerization (ROMP). Part II: Polymers Containing Transition Metals
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- Historical Overview of the Army Contributions to Phosphazene Chemistry
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- Synthesis and Self-assembling Properties of 2,2′:6′,2″-Terpyridine-Based Carbon Nanotube Coordination Polymers
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