Results 261 to 270 of about 296,899 (292)
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Novel pH-Responsive Nanoparticles
Langmuir, 2008In this work we report a new type of pH-responsive micelle-like nanoparticle. Reversible nanoscale structures are formed in solutions of a pH-sensitive hydrophobic polyelectrolyte, poly( N-methacryloyl- l-valine) or poly( N-methacryloyl- l-phenylalanine), and nonionic surfactant (Brij 98) in the presence of hydrochloric acid.
Sergey, Filippov +5 more
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pH-Responsive branched polymer nanoparticles
Soft Matter, 2008We describe a new one-pot, single-step route for the preparation of pH-responsive branched polymer nanoparticles. These polymers, which are based on the pH-responsive monomer 2-(diethylamino)ethyl methacrylate (DEA) and hydrophilic macromonomer poly(ethyleneglycol) methacrylate (PEGMA), are synthesised using a modified conventional free-radical ...
Jonathan V M, Weaver +5 more
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Polymer Chemistry, 2017
This review summarizes pH-responsive monomers, polymers and their derivative nano- and micro-structures including micelles, cross-linked micelles, microgels and hydrogels.
G. Kocak, C. Tuncer, V. Bütün
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This review summarizes pH-responsive monomers, polymers and their derivative nano- and micro-structures including micelles, cross-linked micelles, microgels and hydrogels.
G. Kocak, C. Tuncer, V. Bütün
openaire +1 more source
pH‐Responsive Drug‐Delivery Systems
Chemistry – An Asian Journal, 2014AbstractIn many biomedical applications, drugs need to be delivered in response to the pH value in the body. In fact, it is desirable if the drugs can be administered in a controlled manner that precisely matches physiological needs at targeted sites and at predetermined release rates for predefined periods of time.
Ying-Jie, Zhu, Feng, Chen
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pH-responsive biodegradable amphiphilic networks
Polymer, 2008Abstract Copper-mediated azide–alkyne Huisgen's 1,3-dipolar cycloaddition is a “click” reaction that was successfully used to prepare pH-responsive, amphiphilic and biodegradable networks. Indeed, this reaction proved to be very efficient in the “one pot” grafting of amino alkyne onto azide containing poly(ɛ-caprolactone) and the cross-linking of ...
Zednik, Jiri +5 more
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Doubly pH-Responsive Pickering Emulsion
Langmuir, 2008A pH-responsive Pickering emulsion has been designed on the basis of commercially available alumina-coated silica nanoparticles (Ludox CL silica particles) and potassium hydrogen phthalate (KHP). KHP was found to bind to cationic particle surfaces at pH values between 3.5 and 5.5, enabling the resulting surface-active particles to stabilize emulsions ...
Jian, Li, Harald D H, Stöver
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Crowned Dendrimers: pH-Responsive Pseudorotaxane Formation
The Journal of Organic Chemistry, 2003With the end goal of incorporating the unique structural and physical properties of dendrimers into supramolecular assemblies, bis(m-phenylene)-32-crown-10-functionalized poly(propyleneimine) dendrimers of the first and third generations have been synthesized and their interaction with paraquat diol has been investigated.
Jones, J.W. +5 more
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pH-Responsive Hydrogels: Swelling Model
2004Polymers that alter their characteristics in response to changes in their environment have been of great recent interest. Several research groups have been developing drug delivery systems based on these responsive polymers that intend mimic the normal physiological process.
Tamar, Traitel, Joseph, Kost
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Protein Vesicles with pH-Responsive Disassembly
Biomacromolecules, 2022Protein biomaterials offer several advantages over those made from other components because their amino acid sequence can be precisely controlled with genetic engineering to produce a diverse set of material building blocks. In this work, three different elastin-like polypeptide (ELP) sequences were designed to synthesize pH-responsive protein vesicles.
Dylan R. Dautel +2 more
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pH-Responsive Bridged Silsesquioxane
Chemistry of Materials, 2011A pH-responsive bridged silsesquioxane was obtained via the sol−gel process from a bis-silylated triazine derivative bearing a triple DAD (donor−acceptor−donor) moiety which was strongly hydrogen-bonded to the three ADA (acceptor−donor−acceptor) sites of cyanuric acid.
Laurent Fertier +4 more
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