Browsing by Author "Georgiou, Theoni K."
Now showing items 1-20 of 22
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Article
Amphiphilic model conetworks based on cross-linked star copolymers of benzyl methacrylate and 2-(dimenthylamino)ethyl methacrylate: Synthesis, characterization, and DNA adsorption studies
Achilleos, Demetra S.; Georgiou, Theoni K.; Patrickios, Costas S. (2006)Six amphiphilic model conetworks of a new structure, that of cross-linked "in-out" star copolymers, were synthesized by the group transfer polymerization (GTP) of the hydrophobic monomer benzyl methacrylate (BzMA) and the ...
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Article
Amphiphilic model conetworks of polyisobutylene methacrylate and 2-(dimethylamino)ethyl methacrylate prepared by the combination of quasiliving carbocationic and group transfer polymerizations
Georgiou, Theoni K.; Patrickios, Costas S.; Groh, P. W.; Iván, B. (2007)A series of amphiphilic polymer conetworks (APCN) of the hydrophobic polyisobutylene methacrylate macromonomer (PIBMA) and the ionizable hydrophilic 2-(dimethylamino)ethyl methacrylate (DMAEMA) were synthesized by combining, ...
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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 ...
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Article
Binding of sodium dodecyl sulfate to linear and star homopolymers of the nonionic poly(methoxyhexa(ethylene glycol) methacrylate) and the polycation poly(2-(dimethylamino)ethyl methacrylate): Electromotive force, isothermal titration calorimetry, surface tension, and small-angle neutron scattering measurements
Couderc-Azouani, S.; Sidhu, J.; Georgiou, Theoni K.; Charalambous, Despina C.; Vamvakaki, Maria; Patrickios, Costas S.; Bloor, D. M.; Penfold, J.; Holzwarth, J. F.; Wyn-Jones, E. (2004)The process of binding of sodium dodecyl sulfate (SDS) to various linear and star polymers of the nonionic methoxyhexa(ethylene glycol) methacrylate (PMHEGMA) and the ionic 2-(dimethylamino)ethyl methacrylate (PDMAEMA) was ...
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Article
Cationic double-hydrophilic model networks: Synthesis, characterization, modeling and protein adsorption studies
Loizou, Elena; Triftaridou, Aggeliki I.; Georgiou, Theoni K.; Vamvakaki, Maria; Patrickios, Costas S. (2003)Group transfer polymerization (GTP) was used for the preparation of eight networks based on two hydrophilic monomers, 2-(dimethylamino)ethyl methacrylate (DMAEMA) and poly(ethylene glycol) methacrylate (PEGMA). Ethylene ...
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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, ...
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Article
Covalent amphiphilic polymer networks
Patrickios, Costas S.; Georgiou, Theoni K. (2003)The recent literature on chemically cross-linked amphiphilic polymer networks is reviewed. The main subjects covered are network synthesis, characterization, modeling and applications. Special mention is made to more modern ...
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Article
Microphase separation in ABA triblock copolymer-based model conetworks in the bulk: Effect of loop formation
Karbarz, M.; Stojek, Z.; Georgiou, Theoni K.; Patrickios, Costas S. (2006)This work estimates the free energy and domain size and predicts the phase diagram of microphase-separated model polymer conetworks, consisting of end-linked ABA triblock copolymers with cross-link points of relatively low ...
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Article
Microphase separation under constraints: A molecular thermodynamic theory for polyelectrolytic amphiphilic model networks in water
Georgiou, Theoni K.; Vamvakaki, Maria; Patrickios, Costas S. (2004)The aqueous aggregation behavior of covalent model networks comprising amphiphilic ABA triblock copolymers with hydrophilic ionic mid-blocks and hydrophobic non-ionic end-blocks was studied by formulating a molecular ...
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Book Chapter
Model Networks and Functional Conetworks
Rikkou-Kalourkoti, Maria D.; Patrickios, Costas S.; Georgiou, Theoni K. (Elsevier, 2012)This chapter reviews work on perfect or model homopolymer networks and also on functional, mainly amphiphilic, but less perfect polymer conetworks. The chapter focuses on work published during the past 10 years, but ...
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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 ...
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Conference Object
Nano-engineered model networks: Synthesis, characterization and modeling
Georgiou, Theoni K.; Themistou, Efrosyni; Triftaridou, Aggeliki I.; Hadjiyannakou, Stella C.; Vamvakaki, Maria; Patrickios, Costas S. (Polymer Preprints ACS, 2002)
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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 ...
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Article
Nanoscopic cationic methacrylate star homopolymers: Synthesis by group transfer polymerization, characterization and evaluation as transfection reagents
Georgiou, Theoni K.; Vamvakaki, Maria; Patrickios, Costas S.; Yamasaki, E. N.; Phylactou, Leonidas A. (2004)Seven star polymers with degrees of polymerization (DPs) of the arms from 10 to 100 and dimensions in the nanometer range were prepared using sequential group transfer polymerization of 2-(dimethylamino)-ethyl methacrylate ...
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Article
Structural characterization of glassy and rubbery model anionic amphiphilic polymer conetworks
Kali, Gergely; Georgiou, Theoni K.; Ivan, B.; Patrickios, Costas S.; Loizou, Elena; Thomann, Y.; Tiller, J. C. (2008)The structure of two series of model amphiphilic polymer conetworks based on the hydrophilic anionic methacrylic acid was characterized by atomic force microscopy (AFM) and small-angle neutron scattering (SANS). In the ...
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Article
Synthesis and characterization of anionic amphiphilic model conetworks based on methacrylic acid and methyl methacrylate: Effects of composition and architecture
Kali, Gergely; Georgiou, Theoni K.; Iván, B.; Patrickios, Costas S.; Loizou, Elena; Thomann, Y.; Tiller, J. C. (2007)A series of amphiphilic conetworks of methacrylic acid (MAA) and methyl methacrylate (MMA) were synthesized using group transfer polymerization (GTP). The MAA units were introduced via the polymerization of tetrahydropyranyl ...
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Article
Synthesis and characterization of anionic amphiphilic model conetworks of 2-butyl-1-octyl-methacrylate and methacrylic acid: Effects of polymer composition and architecture
Kali, Gergely; Georgiou, Theoni K.; Iván, B.; Patrickios, Costas S.; Loizou, Elena; Thomann, Y.; Tiller, J. C. (2007)Seven amphiphilic conetworks of methacrylic acid (MAA) and a new hydrophobic monomer, 2-butyl-1-octyl-methacrylate (BOMA), were synthesized using group transfer polymerization. The MAA units were introduced via the ...
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Article
Synthesis and characterization of three-component polyelectrolytic amphiphilic model networks
Hadjiantoniou, Natalie A.; Triftaridou, Aggeliki I.; Georgiou, Theoni K.; Patrickios, Costas S. (2005)Two hydrophilic monomers, 2-(dimethylamino)ethyl methacrylate (DMAEMA, ionizable) and methoxy hexa(ethylene glycol) methacrylate (HEGMA, non-ionic), and one Hydrophobic monomer, n-butyl methacrylate (BuMA) were copolymerized ...
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Article
Synthesis, characterization, and DNA adsorption studies of ampholytic model conetworks based on cross-linked star copolymers
Georgiou, Theoni K.; Patrickios, Costas S. (2008)Five model conetworks based on cross-linked star ampholytic copolymers were synthesized by group transfer polymerization. The ampholytic copolymers were based on two hydrophilic monomers: the positively ionizable ...
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Article
Synthesis, characterization, and evaluation as transfection reagents of ampholytic star copolymers: Effect of star architecture
Georgiou, Theoni K.; Phylactou, Leonidas A.; Patrickios, Costas S. (2006)Five star polymers based on the positively ionizable hydrophilic 2-(dimethylamino)ethyl methacrylate (DMAEMA) and the hydrophobic but hydrolyzable tetrahydropyranyl methacrylate (THPMA) were prepared by group-transfer ...