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Browsing by Subject "Group 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 polymethacrylates: Group transfer polymerization synthesis of the ABC, ACB, and BAC topological isomers and solution characterization 

      Patrickios, Costas S.; Lowe, A. B.; Armes, S. P.; Billingham, N. C. (1998)
      ABC triblock copolymers of methyl methacrylate (MMA), (dimethylamino)-ethyl methacrylate (DMAEMA), and tetrahydropyranyl methacrylate (THPMA) consisting of 12 units of each type of monomer were synthesized by group transfer ...

    • 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  

      Anionic amphiphilic end-linked conetworks by the combination of quasiliving carbocationic and group transfer polymerizations 

      Kali, Gergely; Georgiou, Theoni K.; Iván, B.; Patrickios, Costas S. (2009)
      A series of amphiphilic end-linked conetworks was synthesized by the combination of two "quasiliving" polymerization techniques, quasiliving carbocationic (QLCCP) and group transfer polymerizations (GTP). The hydrophobic ...

    • Article  

      Cationic amphiphilic model networks based on symmetrical ABCBA pentablock terpolymers: Synthesis, characterization, and modelling 

      Triftaridou, Aggeliki I.; Vamvakaki, Maria; Patrickios, Costas S. (2007)
      Eight isomeric networks based on equimolar terpolymers were synthesized using group transfer polymerization (GTP) and were characterized in terms of their swelling properties. Two hydrophilic monomers, the nonionic methoxy ...

    • Article  

      Cationic star polymer siRNA transfectants interconnected with a piperazine-based cationic cross-linker 

      Pafiti, Kyriaki S.; Patrickios, Costas S.; Georgiou, Theoni K.; Yamasaki, E. N.; Mastroyiannopoulos, Nikolaos P.; Phylactou, Leonidas A. (2012)
      Cationic star polymers of 2-(dimethylamino)ethyl methacrylate (DMAEMA) were prepared via the "arm-first" method under group transfer polymerization (GTP) conditions, and were interconnected using a novel, hydrophilic, ...

    • Article  

      Cationic telechelic polyelectrolytes: Synthesis by group transfer polymerization and self-organization in aqueous media 

      Gotzamanis, G. T.; Tsitsilianis, C.; Hadjiyannakou, Stella C.; Patrickios, Costas S.; Lupitskyy, R.; Minko, S. (2006)
      ABA triblock copolymers comprising a relative long poly(2-(dimethylamino) ethyl methacrylate) end-capped by short poly(methyl methacrylate) blocks (PMMA-b-PDMAEMA-b-PMMA) were synthesized using group transfer polymerization ...

    • Article  

      Degradable amphiphilic end-linked conetworks with aqueous degradation rates determined by polymer topology 

      Rikkou-Kalourkoti, Maria D.; Loizou, Elena; Porcar, L.; Butler, P.; Patrickios, Costas S. (2009)
      Degradable amphiphilic conetworks, based on end-linked amphiphilic ABA triblock copolymers with a labile fragment in the middle, were synthesized by sequential group transfer polymerization (GTP) of monomers and cross-linker, ...

    • Article  

      Degradable polymer networks and star polymers based on mixtures of two cleavable dimethacrylate crosslinkers: Synthesis, characterization, and degradation 

      Themistou, Efrosyni; Patrickios, Costas S. (2009)
      Mixtures of two cleavable dimethacrylate crosslinkers, the hydrolyzable di(methacryloyloxy-1-ethoxy)methane (DMOEM) and the thermolyzable 1,1-ethylenediol dimethacrylate (EDDMA), were used for the preparation of neat ...

    • Article  

      Di(n-butyl) itaconate end-functionalized polymers: Synthesis by group transfer polymerization and solution characterization 

      Kassi, Eleni; Loizou, Elena; Porcar, L.; Patrickios, Costas S. (2011)
      In this study we present our efforts to homo- and co-polymerize, using group transfer polymerization (GTP), a dialkyl diester of itaconic acid, a naturally-derived unsaturated dicarboxylic acid. The monomer employed, ...

    • Article  

      Double Networks Based on Amphiphilic Cross-Linked Star Block Copolymer First Conetworks and Randomly Cross-Linked Hydrophilic Second Networks 

      Rikkou-Kalourkoti, Maria D.; Kitiri, E. N.; Patrickios, Costas S.; Leontidis, Epameinondas; Constantinou, Martha; Constantinides, G.; Zhang, X. K.; Papadakis, Christine M. (2016)
      This study presents the preparation and characterization of double networks (DN) based on a first amphiphilic polymethacrylate conetwork (APCN) and a second polyacrylamide network. The APCN first network comprised ...

    • Article  

      Group transfer polymerization in the bulk: Linear polymers and randomly cross-linked networks 

      Yamasaki, E. N.; Patrickios, Costas S. (2003)
      Linear homopolymers and randomly cross-linked homopolymer networks of 2-(dimethylamino)ethyl methacrylate of various molecular weights (MWs) were synthesized by group transfer polymerization in the bulk. 1-methoxy-1-(tri ...

    • Article  

      Group transfer polymerization of biobased monomers 

      Kassi, Eleni; Constantinou, Michalis S.; Patrickios, Costas S. (2013)
      This article overviews the work by our Group at the University of Cyprus on the attempted controlled polymerization of several biobased unsaturated esters. These were esters of tiglic acid, itaconic acid, fumaric acid, ...

    • Article  

      Hydrophilic cationic star homopolymers based on a novel diethanol-n-methylamine dimethacrylate cross-linker for sirna transfection: Synthesis, characterization, and evaluation 

      Pafiti, Kyriaki S.; Mastroyiannopoulos, Nikolaos P.; Phylactou, Leonidas A.; Patrickios, Costas S. (2011)
      Four cationic hydrophilic star homopolymers based on the novel hydrophilic, positively ionizable cross-linker bis(methacryloyloxyethyl)methylamine (BMEMA) were synthesized using sequential group transfer polymerization ...

    • Article  

      Hydrophilic, cationic large-core star polymers and polymer networks: Synthesis and physicochemical characterization 

      Kafouris, Demetris; Gradzielski, M.; Patrickios, Costas S. (2008)
      Group transfer polymerization was used to prepare hydrophilic, cationic large-core star polymers (LCSPs) and networks of 2-(dimethylamino)ethyl methacrylate (DMAEMA) and ethylene glycol dimethacrylate (EGDMA) in a two-step ...

    • Article  

      Multi-functional conetworks based on cross-linked star polymers 

      Georgiou, Theoni K.; Achilleos, Demetra S.; Patrickios, Costas S. (2010)
      Three series of conetworks based on cross-linked star polymers of different architectures were prepared using group transfer polymerization. The first series of conetworks were amphiphilic, based on the hydrophobic monomer ...

    • Conference Object  

      Nanophase separated anionic amphiphilic model conetworks based on methacrylic acid 

      Kali, Gergely; Georgiou, Theoni K.; Iván, B.; Patrickios, Costas S.; Loizou, Elena; Thomann, Y.; Tiller, J. (2007)
      Two series of model amphiphilic polymer conetworks were synthesized by group transfer polymerization (GTP). The first one contained methyl methacrylate (MMA) and the second one 2-butyl-l-octyl methacrylate (BOMA) as ...

    • Article  

      Near-monodisperse α-hydroxy and α,ω-dihydroxy amine-based polymers: Synthesis and characterization 

      Costa, Costas N.; Patrickios, Costas S. (1999)
      α-Hydroxy and α,ω-dihydroxy polymers of 2-(dimethylamino)ethyl methacrylate (DMAEMA) of various molecular weights were synthesized by group transfer polymerization (GTP) in tetrahydrofuran (THF), using 1-methoxy-1-(trime ...

    • Article  

      Near-monodisperse, catalytically active, imidazole-containing homooligomers: Synthesis by group transfer polymerization and solution characterization 

      Simmons, M. R.; Patrickios, Costas S. (1999)
      Oligomers covering degrees of polymerization up to 23 of 2-(1-imidazolyl)-ethyl methacrylate (ImEMA) were synthesized by group transfer polymerization (GTP) in propylene carbonate and tetrahydrofuran (THF). While GTP ...

    • Article  

      Randomly cross-linked homopolymer networks: Synthesis by group transfer polymerization in solution and characterization of the aqueous degree of swelling 

      Hadjiyannakou, Stella C.; Yamasaki, E. N.; Patrickios, Costas S. (2001)
      Randomly cross-linked homopolymer networks of 2-(dimethylamino)ethyl methacrylate (DMAEMA) of various average degrees of polymerization (DPs) between cross-links were synthesized by group transfer polymerization (GTP) in ...

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