نتایج جستجو برای: silica inorganic polymer

تعداد نتایج: 199691  

Journal: :Journal of the American Chemical Society 2003
Yi Yang Yunfeng Lu Mengcheng Lu Jinman Huang Raid Haddad George Xomeritakis Nanguo Liu Anthony P Malanoski Dietmar Sturmayr Hongyou Fan Darryl Y Sasaki Roger A Assink John A Shelnutt Frank van Swol Gabriel P Lopez Alan R Burns C Jeffrey Brinker

Conjugated polymer/silica nanocomposites with hexagonal, cubic, or lamellar mesoscopic order were synthesized by self-assembly using polymerizable amphiphilic diacetylene molecules as both structure-directing agents and monomers. The self-assembly procedure is rapid and incorporates the organic monomers uniformly within a highly ordered, inorganic environment. By tailoring the size of the oligo...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2010
Adham Ahmed Rob Clowes Elizabeth Willneff Peter Myers Haifei Zhang

Porous nanospheres have a wide range of applications such as in catalysis, separation and controlled delivery. Among these nanospheres, syntheses and applications of porous silica nanospheres have been investigated extensively. Uniform porous silica nanospheres can be synthesized using a modified Stöber method. In the present study, porous silica spheres were prepared in the pre-formed emulsion...

2013
Ayae Sugawara-Narutaki

It is increasingly important that we learn how to fabricate materials in environmentally friendly ways using common resources that are abundant in nature. Biomineralization, the process by which living organisms create a variety of sophisticated composites, such as bone and shell, is an ideal model for such fabrication. This article reviews recent progress toward the synthesis of polymer–inorga...

Journal: :ACS applied materials & interfaces 2012
Yong Wang Jie He Jiwei Chen Lianbing Ren Biwang Jiang Jing Zhao

We report a preparation method for the synthesis of monodisperse magnetic polymer/silica hybrid microspheres using polymer microspheres incorporated with magnetic nanoparticles as a novel template. Monodisperse, hierarchically mesoporous, silica microspheres embedded with magnetic nanoparticles were successfully fabricated after the calcination of the hybrid microspheres. The magnetic nanoparti...

Journal: :Physical chemistry chemical physics : PCCP 2007
Stéphane Reculusa Romain Perrier-Cornet Béatrice Agricole Valérie Héroguez Thierry Buffeteau Serge Ravaine

Multilayered films starting with silica or polymer particles in the micron-size range have been prepared using the Langmuir-Blodgett technique. The polymer particles made of highly cross-linked cores and hydrophilic shells were elaborated through a precipitation polymerization method that allows formation of particles with a low polydispersity. The influence of the surface function, the differe...

2016
Poornima Vijayan P. Mariam Ali S. A. Al-Maadeed

The potential of inorganic nanomaterials as reservoirs for healing agents is presented here. Mesoporous silica (SBA-15) and TiO2 nanotubes (TNTs) were synthesized. Both epoxy-encapsulated TiO2 nanotubes and amine-immobilized mesoporous silica were incorporated into epoxy and subsequently coated on a carbon steel substrate. The encapsulated TiO2 nanotubes was quantitatively estimated using a 'de...

Journal: :Journal of colloid and interface science 2012
Thomas M Ruhland Paul M Reichstein Alexander P Majewski Andreas Walther Axel H E Müller

We present the preparation and the characterization of the solution behavior and functional properties of superparamagnetic and/or fluorescent, thermo-responsive inorganic/organic hybrid particles with an intermediate protective silica shell and a smart polymer corona. These well-defined multifunctional nanogels were prepared via two consecutive encapsulation processes of superparamagnetic Fe(2...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2004
Elizabeth A Coffman Anatoli V Melechko David P Allison Michael L Simpson Mitchel J Doktycz

Natural systems excel in directing the synthesis of inorganic materials for various functional purposes. One of the best-studied systems is silica synthesis, as occurs in diatoms and marine sponges. Various biological and synthetic polymers have been shown to template and catalyze silica formation from silicic acid precursors. Here, we describe the use of poly-L-lysine to promote the synthesis ...

2012
Teruaki Fuchigami Yoshitaka Kitamoto Yoshihisa Namiki

Nano-sized FePt capsules with two types of ultrathin shell were fabricated using a template method for use in a nano-scale drug delivery system. One capsule was composed of an inorganic-organic hybrid shell of a water-soluble polymer and FePt nanoparticles, and the other capsule was composed of a network of fused FePt nanoparticles. We demonstrated that FePt nanoparticles selectively accumulate...

Journal: :Journal of the American Chemical Society 2006
Ruili Liu Yifeng Shi Ying Wan Yan Meng Fuqiang Zhang Dong Gu Zhenxia Chen Bo Tu Dongyuan Zhao

Highly ordered mesoporous polymer-silica and carbon-silica nanocomposites with interpenetrating networks have been successfully synthesized by the evaporation-induced triconstituent co-assembly method, wherein soluble resol polymer is used as an organic precursor, prehydrolyzed TEOS is used as an inorganic precursor, and triblock copolymer F127 is used as a template. It is proposed for the firs...

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