Search Results - "Christo Tsvetanov"

Loading of polymer nanocarriers: Factors, mechanisms and applications by Kowalczuk, Agnieszka, Trzcinska, Roza, Trzebicka, Barbara, Müller, Axel H.E., Dworak, Andrzej, Tsvetanov, Christo B.

“…The progress in synthetic polymer chemistry has allowed the precise design of hybrid and multifunctional colloidal particles, which differ in type, size and…”
Get full text

Thermosensitive water-soluble copolymers with doubly responsive reversibly interacting entities by Dimitrov, Ivaylo, Trzebicka, Barbara, Müller, Axel H.E., Dworak, Andrzej, Tsvetanov, Christo B.

“…The precise control of the formation of stimuli-sensitive sequences (block or graft) as part of copolymer architectures is fascinating because of the…”
Get full text

Thermoresponsive Polyoxazolines as Vectors for Transfection of Nucleic Acids by Haladjova, Emi, Rangelov, Stanislav, Tsvetanov, Christo

“…Poly(2-oxazoline)s (POx) are an attractive platform for the development of non-viral gene delivery systems. The combination of POx moieties, exhibiting…”
Get full text

Partially Hydrolyzed Poly(n‑propyl-2-oxazoline): Synthesis, Aqueous Solution Properties, and Preparation of Gene Delivery Systems by Mees, Maarten, Haladjova, Emi, Momekova, Denitsa, Momekov, Georgi, Shestakova, Pavletta S, Tsvetanov, Christo B, Hoogenboom, Richard, Rangelov, Stanislav

“…Random copolymers of n-propyl-2-oxazoline and ethylenimine (PPrOx–PEI) were prepared by partial acidic hydrolysis of poly­(n-propyl-2-oxazoline) (PPrOx)…”
Get full text

Polymeric Nanoparticle Engineering: From Temperature-Responsive Polymer Mesoglobules to Gene Delivery Systems by Haladjova, Emi, Toncheva-Moncheva, Natalia, Apostolova, Margarita D, Trzebicka, Barbara, Dworak, Andrzej, Petrov, Petar, Dimitrov, Ivaylo, Rangelov, Stanislav, Tsvetanov, Christo B

“…A novel approach for the preparation of nano- and microcapsules in aqueous solutions by using thermoresponsive polymer (TRP) templates (mesoglobules) is…”
Get full text

Development of propolis-loaded block copolymer micelles of superior structural stability and high loading capacity by Petrov, Petar D., Grancharov, Georgy, Gancheva, Valeria, Trusheva, Boryana, Bankova, Vassya, Tsvetanov, Christo B.

“…We report on the efficient loading of poplar propolis into core-shell micelles based on amphiphilic poly(ethylene oxide)-block-poly(n-butyl acrylate)…”
Get full text

UV-assisted synthesis of super-macroporous polymer hydrogels by Petrov, Petar, Petrova, Elissaveta, Tsvetanov, Christo B.

“…A facile method to the synthesis of polymer cryogels employing the UV irradiation technique and hydrogen peroxide as initiator is presented. Various cryogels…”
Get full text

Synthesis and Aqueous Solution Properties of Block Copolyethers with Latent Chemical Functionality by Stoyanova, Boyana, Novakov, Christo, Tsvetanov, Christo B., Rangelov, Stanislav

“…Three series of polyglycidol‐poly(allyl glycidyl ether)‐polyglycidol (PG‐PAGE‐PG) triblock copolymers with ranging PG contents and fixed molar masses of the…”
Get full text

Poly(ethoxytriethyleneglycol acrylate) cryogels as novel sustained drug release systems for oral application by Kostova, Bistra, Momekova, Denitsa, Petrov, Petar, Momekov, Georgi, Toncheva-Moncheva, Natalia, Tsvetanov, Christo B., Lambov, Nikolai

“…Novel temperature sensitive cryogels of poly(ethoxytriethyleneglycol acrylate) (PETEGA), with in situ entrapped active substance, are synthesized employing the…”
Get full text

In situ entrapment of urease in cryogels of poly(N-isopropylacrylamide): An effective strategy for noncovalent immobilization of enzymes by Petrov, Petar, Pavlova, Severina, Tsvetanov, Christo B., Topalova, Yana, Dimkov, Raycho

“…Supermacroporous poly(N‐isopropylacrylamide) (PNIPAAm) cryogels containing urease were prepared via UV irradiation technique and hydrogen peroxide as…”
Get full text

Morphology rearrangement of PEO and PG blocks of amphiphilic copolymer particles in solution affected by FeCl3/acidified water addition by Haladjova, Emi, Shestakova, Pavletta, Tsvetanov, Christo B., Novakov, Christo P.

“…The present contribution describes the preparation of nanosized aggregates by dissolving diblock copolymers consisting of hydrophobic polystyrene (PS) with…”
Get full text

Stabilized Mixed Micelles with a Temperature-Responsive Core and a Functional Shell by Petrov, Petar, Tsvetanov, Christo B, Jérôme, Robert

“…Formation and stabilization of multiresponsive micelles with a mixed poly(ethylene oxide)/polyelectrolyte shell and a temperature-responsive poly(propylene…”
Get full text

Encapsulation of urease in double-layered hydrogels of macroporous poly(2-hydroxyethyl methacrylate) core and poly(ethylene oxide) outer layer: fabrication and biosensing properties by Petrov, Petar, Jeleva, Denitza, Tsvetanov, Christo B

“…Double‐layered hydrogels of super‐macroporous poly(2‐hydroxyethyl methacrylate) (PHEMA) cryogel core and poly(ethylene oxide) (PEO) hydrogel outer layer for…”
Get full text

UV-assisted grafting of polymers: A method towards biocompatible carbon nanotubes by Petrov, Petar, Georgiev, Georgi, Momekova, Denica, Momekov, Georgi, Tsvetanov, Christo B.

“…A strategy for covalent grafting of biocompatible polymers onto sidewalls of multi-walled carbon nanotubes (MWNTs) via UV-initiated free-radical polymerization…”
Get full text

Synthesis of biodegradable hydroxyethylcellulose cryogels by UV irradiation by Petrov, Petar, Petrova, Elissaveta, Tchorbanov, Bozidar, Tsvetanov, Christo B.

“…Biodegradable macroporous hydroxyethylcellulose (HEC) cryogels of good quality and high gel fraction yield (95%) were synthesized via a facile method. The…”
Get full text

Cryogels of cellulose derivatives prepared via UV irradiation of moderately frozen systems by Petrov, Petar, Petrova, Elissaveta, Stamenova, Rayna, Tsvetanov, Christo B., Riess, Gerard

“…Cryogels of non-ionic (hydroxypropyl)methylcellulose, 2-hydroxyethylcellulose, methylcellulose and cationic hydroxyethylcelluloses were prepared for the first…”
Get full text

Synthesis and Associating Properties of Poly(ethoxyethyl glycidyl ether)/Poly(propylene oxide) Triblock Copolymers by Dimitrov, Philip, Rangelov, Stanislav, Dworak, Andrzej, Tsvetanov, Christo B

“…A number of ABA and BAB triblock copolymers of ethoxyethyl glycidyl ether (EEGE) and propylene oxide (PO) were prepared by sequential anionic polymerization…”
Get full text

Super-macroporous poly(ethoxytriethyleneglycol acrylate) hydrogels for sustained delivery of hydrophilic drugs by Petrov, Petar, Momekova, Denitsa, Kostova, Bistra, Momekov, Georgi, Toncheva-Moncheva, Natalia, Tsvetanov, Christo B., Lambov, Nikolay

Get full text

Formation of mesoglobules in aqueous media from thermo-sensitive poly(ethoxytriethyleneglycol acrylate) by Toncheva-Moncheva, Natalia, Dimitrov, Philip, Tsvetanov, Christo B., Robak, Barbara, Trzebicka, Barbara, Dworak, Andrzej, Rangelov, Stanislav

“…A series of six poly(ethoxytriethyleneglycol acrylate) (PETEGA) homopolymers were synthesized by atom transfer radical polymerization, reversible…”
Get full text

Two-component "Onionlike" micelles with a PPO core, a PDMAEMA shell and a PEO corona: formation and crosslinking by Petrov, Petar, Tsvetanov, Christo B, Jérôme, Robert

“…BACKGROUND: Chemical or physical crosslinking of supramolecular assemblies gives them stability in a wide range of environments. Much attention is paid to…”
Get full text