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Browsing by Subject "Reversible addition-fragmentation chain transfer polymerization"

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    • Article  

      2-(Pyridin-2-yl)ethanol as a protecting group for carboxylic acids: Chemical and thermal cleavage, and conversion of poly[2-(pyridin-2-yl)ethyl methacrylate] to poly(methacrylic acid) 

      Elladiou, Marios; Patrickios, Costas S. (2012)
      In this communication, we show that 2-(pyridin-2-yl)ethanol is a good protecting group for methacrylic acid (MAA), which can be selectively removed, after polymerization, either chemically under alkaline conditions or ...

    • Article  

      ABC Triblock Terpolymers with Orthogonally Deprotectable Blocks: Synthesis, Characterization, and Deprotection 

      Elladiou, Marios; Patrickios, Costas S. (2015)
      The development and availability of new protecting groups are vital for all branches of synthetic chemistry. Equally vital is the facile and selective removal of these groups, leaving intact other protecting groups which ...

    • Article  

      Alternating amphiphilic multiblock copolymers: Controlled synthesis via RAFT polymerization and aqueous solution characterization 

      Hadjiantoniou, N. A.; Krasia-Christoforou, T.; Loizou, E.; Porcar, L.; Patrickios, C. S. (2010)
      Four linear amphiphilic multiblock copolymers based on 2-(dimethylamino) ethyl methacrylate (DMAEMA, hydrophilic) and methyl methacrylate (MMA, hydrophobic), bearing from two to five blocks, were synthesized using reversible ...

    • Article  

      Alternating amphiphilic multiblock copolymers: Controlled synthesis via RAFT polymerization and aqueous solution characterization 

      Hadjiantoniou, Natalie A.; Krasia‐Christoforou, Theodora; Loizou, Elena; Porcar, L.; Patrickios, Costas S. (2010)
      Four linear amphiphilic multiblock copolymers based on 2-(dimethylamino) ethyl methacrylate (DMAEMA, hydrophilic) and methyl methacrylate (MMA, hydrophobic), bearing from two to five blocks, were synthesized using reversible ...

    • Article  

      Double-networks based on pH-responsive, amphiphilic "core-first" star first polymer conetworks prepared by sequential RAFT polymerization 

      Kitiri, E. N.; Patrickios, C. S.; Voutouri, C.; Stylianopoulos, T.; Hoffmann, I.; Schweins, R.; Gradzielski, M. (2017)
      This manuscript presents the preparation and study of a new double-network hydrogel system, comprising an amphiphilic, pH-responsive first polymer conetwork synthesized via reversible addition-fragmentation chain transfer ...

    • Article  

      Double-networks based on pH-responsive, amphiphilic "core-first" star first polymer conetworks prepared by sequential RAFT polymerization 

      Kitiri, E. N.; Patrickios, Costas S.; Voutouri, Chrysovalantis; Stylianopoulos, Triantafyllos; Hoffmann, I.; Schweins, R.; Gradzielski, M. (2017)
      This manuscript presents the preparation and study of a new double-network hydrogel system, comprising an amphiphilic, pH-responsive first polymer conetwork synthesized via reversible addition-fragmentation chain transfer ...

    • Article  

      End-linked poly[2-(dimethylamino)ethyl methacrylate]-poly(methacrylic acid) polyampholyte conetworks: Synthesis by sequential RAFT polymerization and swelling and SANS characterization 

      Pafiti, Kyriaki S.; Philippou, Zelina; Loizou, Elena; Porcar, L.; Patrickios, Costas S. (2011)
      Four well-defined end-linked triblock polyampholyte conetworks composed of positively ionizable 2-(dimethylamino)ethyl methacrylate (DMAEMA) repeating units and negatively ionizable methacrylic acid (MAA) repeating units ...

    • Article  

      End-linked semifluorinated amphiphilic polymer conetworks: Synthesis by sequential reversible addition - Fragmentation chain transfer polymerization and characterization 

      Pafiti, Kyriaki S.; Loizou, Elena; Patrickios, Costas S.; Porcar, L. (2010)
      One-pot, sequential reversible addition - fragmentation chain transfer (RAFT) polymerization was employed for the preparation of five end-linked semifluorinated amphiphilic polymer conetworks based on 2,2,2-trifluoroethyl ...

    • Article  

      An innovative synthesis approach toward the preparation of structurally defined multiresponsive polymer (co)networks 

      Achilleos, M.; Demetriou, M.; Marinica, O.; Vekas, L.; Krasia-Christoforou, T. (2014)
      A new and facile synthesis approach employed for the fabrication of multiresponsive polymer conetworks characterized by predefined architecture and composition is described for the first time. The presented methodology ...

    • Article  

      "Inverse polyampholyte" hydrogels from double-cationic hydrogels: Synthesis by RAFT polymerization and characterization 

      Pafiti, Kyriaki S.; Elladiou, Marios; Patrickios, Costas S. (2014)
      We present two novel, homologous, pyridine-based monomers, 2-(pyridin-2-yl)ethyl methacrylate (PyEMA) and (pyridin-2-yl)methyl methacrylate (PyMMA), which, despite their structural similarity, the former can be readily ...

    • Article  

      Regular and inverse polyampholyte hydrogels: A detailed comparison 

      Constantinou, Anna P.; Elladiou, Marios; Patrickios, Costas S. (2016)
      Two series of polyampholyte (PA) hydrogels were prepared via reversible addition-fragmentation chain transfer polymerization, followed by removal of the protecting group of the acidic monomer repeating units (methacrylic ...

    • Article  

      Structurally-defined semi-interpenetrating amphiphilic polymer networks with tunable and predictable mechanical response 

      Achilleos, M.; Mpekris, F.; Stylianopoulos, T.; Krasia-Christoforou, T. (2016)
      The synthesis of structurally-defined semi-interpenetrating amphiphilic networks is realized by employing an easy and versatile synthetic concept based on the encapsulation of well-defined hydrophobic linear polymer chains ...

    • Article  

      Styrene-vinyl pyridine diblock copolymers: Achieving high molecular weights by the combination of anionic and reversible addition-fragmentation chain transfer polymerizations 

      Pafiti, Kyriaki S.; Patrickios, Costas S.; Filiz, Volkan; Rangou, Sofia; Abetz, Clarissa; Abetz, Volker (2013)
      Anionic and reversible addition-fragmentation chain transfer (RAFT) polymerizations were combined for the preparation of high molecular weight (MW) amphiphilic diblock copolymers based on the hydrophobic styrene (Sty) and ...

    • Article  

      Superparamagnetic hybrid micelles, based on iron oxide nanoparticles and well-defined diblock copolymers possessing β-ketoester functionalities 

      Papaphilippou, P.; Loizou, L.; Popa, N. C.; Han, A.; Vekas, L.; Odysseos, A.; Krasia-Christoforou, T. (2009)
      The quality of surface coating of magnetic nanoparticles destined as nanoprobes in clinical applications is of utmost significance for their colloidal stability and biocompatibility. A novel approach for the fabrication ...

    • Article  

      Synthesis and characterization of amphiphilic diblock copolymers of 2-(1-imidazolyl)ethyl methacrylate and styrene 

      Rikkou-Kalourkoti, Maria D.; Panteli, Panayiota A.; Patrickios, Costas S. (2014)
      Six amphiphilic diblock copolymers based on the hydrophilic monomer 2-(1-imidazolyl)ethyl methacrylate (ImEMA) and the hydrophobic monomer styrene (Sty) were prepared by sequential reversible addition-fragmentation chain ...

    • Article  

      Synthesis and characterization of end-linked amphiphilic copolymer conetworks based on a novel bifunctional cleavable chain transfer agent 

      Rikkou-Kalourkoti, Maria D.; Patrickios, Costas S. (2012)
      A novel bifunctional bis(hemiacetal ester) chain transfer agent (CTA), 1,2-bis[1-(4-cyano-4-methyl-1-oxo-4-(phenylcarbonothioylthio)butanoxy)ethoxy] ethane (CMPTBEE), appropriate for the reversible addition-fragmentation ...

    • Article  

      Synthesis and characterization of hyperbranched amphiphilic block copolymers prepared via self-condensing RAFT polymerization 

      Rikkou-Kalourkoti, Maria D.; Elladiou, Marios; Patrickios, Costas S. (2015)
      Four families of hyperbranched amphiphilic block copolymers of styrene (Sty, less polar monomer) and 2-vinylpyridine (2VPy, one of the two more polar monomers) or 4-vinylpyridine (4VPy, the other polar monomer) were prepared ...

    • Article  

      Synthesis and characterization of rigid functional anionic polyelectrolytes: Block copolymers and star homopolymers 

      Rikkou-Kalourkoti, Maria D.; Kassi, Eleni; Patrickios, Costas S. (2012)
      Seven cyclolinear polymers bearing the tertiary-butyl α- (hydroxymethyl)acrylate (TBHMA) ether dimer were prepared using reversible addition-fragmentation chain transfer (RAFT) polymerization. Of the seven polymers, five ...

    • Article  

      Synthesis and characterization of well-defined block and statistical copolymers based on lauryl methacrylate and 2-(acetoacetoxy)ethyl methacrylate using RAFT-controlled radical polymerization 

      Demetriou, M.; Krasia-Christoforou, T. (2008)
      Four well-defined diblock copolymers and one statistical copolymer based on lauryl methacrylate (LauMA) and 2-(acetoacetoxy)ethyl methacrylate (AEMA) were prepared using reversible addition-fragmentation chain transfer ...

    • Article  

      Synthesis and characterization of well-defined optically active methacrylic diblock copolymers 

      Achilleos, M.; Kafouris, D.; Holder, S. J.; Krasia-Christoforou, T. (2012)
      A new, simple, and cost-effective approach toward the development of well-defined optically active diblock copolymers based on methacrylate monomers is described for the first time. Starting from the low-cost optically ...

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