Browsing by Subject "Light scattering"

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

Monolayers, bilayers and micelles of zwitterionic lipids as model systems for the study of specific anion effects

Aroti, Andria; Leontidis, Epameinondas; Dubois, M.; Zemb, T.; Brezesinski, G. (2007)

This work is a review of the effect of different monovalent anions (belonging to the Hofmeister series) on a single model amphiphile, phosphatidylcholine molecules in contact with water, in three different geometries, ...

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 ...

Article

SAXS Investigation of ABC Triblock Star Terpolymers in Aqueous Solution

Castelletto, V.; Hamley, I. W.; Triftaridou, Aggeliki I.; Patrickios, Costas S. (2004)

The structure of three different ABC triblock star terpolymers in aqueous solution has been investigated by small-angle x-ray scattering (SAXS). The form factor was modeled using an analytical expression for a Gaussian ...

Article

Synthesis and aqueous solution characterization of dihydrophilic block copolymers of methyl vinyl ether and methyl triethylene glycol vinyl ether

Forder, C.; Patrickios, Costas S.; Armes, S. P.; Billingham, N. C. (1996)

Water-soluble dihydrophilic AB block copolymers of methyl vinyl ether (MVE) and methyl triethylene glycol vinyl ether (MTEGVE) were synthesized by living cationic polymerization, with copolymer molecular weights in the ...

Article

Synthesis and aqueous solution characterization of novel diblock polyampholytes containing imidazole

Hadjikallis, G.; Hadjiyannakou, Stella C.; Vamvakaki, Maria; Patrickios, Costas S. (2002)

A series of diblock copolymers of 2-(1-imidazolyl)ethyl methacrylate and tetrahydropyranyl methacrylate (THPMA) were synthesized by group transfer polymerization using propylene carbonate rather than tetrahydrofuran as the ...

Article

Synthesis and aqueous solution properties of amphiphilic diblock copolymers based on methyl triethylene glycol vinyl ether and benzyl vinyl ether

Forder, C.; Patrickios, Costas S.; Armes, S. P.; Billingham, N. C. (1997)

Water-soluble diblock copolymers of methyl triethylene glycol vinyl ether and benzyl vinyl ether were synthesized by living cationic polymerization, giving molecular weights in the range 13 400-17 300 and narrow molecular ...

Article

Synthesis and characterization of amphiphilic diblock copolymers of methyl tri(ethylene glycol) vinyl ether and isobutyl vinyl ether

Patrickios, Costas S.; Forder, C.; Armes, S. P.; Billingham, N. C. (1996)

Water-soluble diblock copolymers of methyl tri(ethylene glycol) vinyl ether (hydrophilic block) and isobutyl vinyl ether (hydrophobic block) of different molecular weights and composition were synthesized by living cationic ...

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 star polymers and cross-linked star polymer model networks containing a novel, silicon-based, hydrolyzable cross-linker

Themistou, Efrosyni; Patrickios, Costas S. (2004)

An acid-labile dimethacrylate cross-linker, dimethyldi(methacryloyloxy-1-ethoxy)silane (DMDMAES), was synthesized by the reaction of 2-hydroxyethyl methacrylate (HEMA) and dichlorodimethylsilane in the presence of ...

Article

Synthesis, characterization and evaluation of amphiphilic diblock copolymer emulsifiers based on methoxy hexa(ethylene glycol) methacrylate and benzyl methacrylate

Hadjiyannakou, Stella C.; Vamvakaki, Maria; Patrickios, Costas S. (2004)

Linear, amphiphilic diblock copolymers based on the nonionic, hydrophilic monomer methoxy hexa(ethylene glycol) methacrylate (HEGMA) and the hydrophobic monomer benzyl methacrylate (BzMA) of different molecular weights and ...

Article

Synthesis, characterization, and evaluation as emulsifiers of amphiphilic-ionizable aromatic methacrylate ABC triblock terpolymers

Kyriacou, M. S.; Hadjiyannakou, Stella C.; Vamvakaki, Maria; Patrickios, Costas S. (2004)

Four isomeric terpolymers based on benzyl methacrylate (BzMA, nonionic hydrophobic), 2-(dimethylamino)ethyl methacrylate (DMAEMA, ionizable hydrophilic), and methoxyhexa(ethylene glycol) methacrylate (HEGMA, nonionic ...

Article

Third-order optical nonlinearities of PVP/Pd nanohybrids

Papagiannouli, I.; Potamianos, D.; Krasia-Christoforou, T.; Couris, S. (2017)

Pd nanoparticles stabilized by polyvinylpyrrolidone were synthesized following mild reduction of palladium ion complexes. Their morphology and optical properties were characterized using Transmission Electron Microscopy, ...