Results 41 to 50 of about 22,210 (290)

Preparation of ZnO hybrid nanoparticles by ATRP [PDF]

Polymer, 2016
Abstract Zinc oxide (ZnO) is a wide bandgap semiconductor material that has attracted widespread interest as particle filler in polymer nanocomposite materials. However, its applications have been hindered by the limited dispersibility and surface-modification techniques.
Hangjun Ding, Jiajun Yan, Zongyu Wang, Guojun Xie, Clare Mahoney, Rachel Ferebee, Mingjiang Zhong, William F.M. Daniel, Joanna Pietrasik, Sergei S. Sheiko, Christopher J. Bettinger, Michael R. Bockstaller, Krzysztof Matyjaszewski   +12 more
openaire   +2 more sources

Enhancing the Self‐Assembly of Step‐Growth Polymers by Narrowing Their Molar Mass Distribution: A Dynamic Bond‐Mediated Approach

Angewandte Chemie, EarlyView.
The study introduces asymmetric dynamic bond‐mediated polymerization (ADBP), a method to narrow molar mass distributions in step‐growth polymers via asymmetric, reversibly‐deactivated AA'‐type electrophiles. ADBP initially forms low‐dispersity dimers/trimers, later polymerizing into polyurethanes with controlled dispersities (Đ ≤ 1.5), yielding ...
Lucas Polo Fonseca, Shaghayegh Hamzehlou, Olaia Garagarza, Daniele Mantione, Aritz Lamas, Xabier Lopez de Pariza, Fermin Elizalde, Marta Ximenis Campins, Amaia Agirre, Gabriel Perli, Haritz Sardon   +10 more
wiley   +2 more sources

Kinetics of Fe-Mediated ATRP with Triarylphosphines

Macromolecules, 2015
Phosphines have been successfully used as additives for Fe-based ATRP. To understand their role in detail, the kinetics of Fe-based ATRP in the presence of tris(2,4,6-trimethoxyphenyl)phosphine (TTMPP) and of triphenylphosphine (TPP) was studied via online vis/near-IR and 31P NMR spectroscopy.
Schroeder, Hendrik, Matyjaszewski, Krzysztof, Buback, Michael   +2 more
openaire   +3 more sources

Optical Force Monitoring in Polymeric Materials with a Coumarin‐Based Mechanophore

Angewandte Chemie, EarlyView.
Coumarin dyes are reacted with acrylates to form a mechanophore via an accessible two‐step synthesis that exhibits exclusive responsivity to force. Mechanical deformation of polymeric materials functionalized with the mechanophore activates blue fluorescence visible to the naked eye, enabling the optical detection of force‐induced molecular damage in ...
Yang Li, Jess M. Clough
wiley   +2 more sources

Nonthermal Plasma Technology as a Versatile Strategy for Polymeric Biomaterials Surface Modification: A Review [PDF]

, 2009
In modern technology, there is a constant need to solve very complex problems and to fine-tune existing solutions. This is definitely the case in modern medicine with emerging fields such as regenerative medicine and tissue engineering.
De Geyter, Nathalie, Desmet, Tim, Dubruel, Peter, Leys, Christophe, Morent, Rino, Schacht, Etienne   +5 more
core   +1 more source

ATRP in the design of functional materials for biomedical applications [PDF]

Progress in Polymer Science, 2012
Atom Transfer Radical Polymerization (ATRP) is an effective technique for the design and preparation of multifunctional, nanostructured materials for a variety of applications in biology and medicine. ATRP enables precise control over macromolecular structure, order, and functionality, which are important considerations for emerging biomedical designs.
Siegwart, Daniel J., Oh, Jung Kwon, Matyjaszewski, Krzysztof   +2 more
openaire   +3 more sources

Redox- and NIR-Active Iron(III) Triradicals as Catalysts for Radical Polymerization of Acrylamides and Methacrylates. [PDF]

Angew Chem Int Ed Engl
A redox‐active low‐spin Fe(III)‐triradical complex was isolated in good yield and utilized as a catalyst for radical polymerization of acrylamides and methacrylates at ambient conditions. Abstract Two unprecedented redox‐active, low‐spin Fe(III)‐triradical complexes, [Fe(III)(SS‐NHC═S•−)3]·NHC═S (1·NHC═S; E═S) and [Fe(III)(SS‐NHC═Se•−)3] (2; E═Se) have
Das S, Jain A, Ahamed S, Sahu B, Suthar S, Schwarz B, Mascarenhas CL, Mondal S, Kushvaha SK, Banerjee S, Roesky HW, Mondal KC.   +11 more
europepmc   +3 more sources

Metal-free atom transfer radical polymerization with ppm catalyst loading under sunlight

Nature Communications, 2021
Organocatalytic atom transfer radical polymerization (O-ATRP) is attractive due to its metal-free nature but catalysts are rarely applied at a low loading. Here the authors introduce a catalyst design logic based on heteroatom-doping of polycyclic arenes,
Qiang Ma, Jinshuai Song, Xun Zhang, Yu Jiang, Li Ji, Saihu Liao   +5 more
doaj   +1 more source

The polymerisation of oligo(ethylene glycol methyl ether) methacrylate from a multifunctional poly(ethylene imine) derived amide: a stabiliser for the synthesis and dispersion of magnetite nanoparticles [PDF]

, 2014
A facile synthetic route to poly(ethylene imine)-graft-poly(oligo(ethylene glycol methyl ether)) (PEI-graft-POEGMA) functionalised superparamagnetic magnetite nanoparticles is described.
Altan, Cem L., Bucak, Seyda, Holder, Simon J., Kleine, Aaron, Sommerdijk, Nico A. J. M., Yarar, U. Ecem   +5 more
core   +2 more sources

Aqueous SARA ATRP using inorganic sulfites [PDF]

Polymer Chemistry, 2017
Aqueous SARA ATRP using inorganic sulfites was successfully carried out for the first time.
Carlos M. R. Abreu, Carlos M. R. Abreu, Jorge F. J. Coelho, Krzysztof Matyjaszewski, Sheiliza Carmali, Arménio C. Serra, Liye Fu   +6 more
openaire   +3 more sources