A5089883567- Advanced Polymer Synthesis and Characterization
- Synthetic Organic Chemistry Methods
- biodegradable polymer synthesis and properties
- Organometallic Complex Synthesis and Catalysis
- Carbon dioxide utilization in catalysis
- Photopolymerization techniques and applications
- Organoboron and organosilicon chemistry
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Synthesis and properties of polymers
- Luminescence and Fluorescent Materials
- Organic Light-Emitting Diodes Research
- Electrospun Nanofibers in Biomedical Applications
- Ionic liquids properties and applications
- Chemical Synthesis and Reactions
- Hydrogels: synthesis, properties, applications
- Polymer Nanocomposites and Properties
- Polymer crystallization and properties
- Silicone and Siloxane Chemistry
- X-ray Diffraction in Crystallography
- Polymer composites and self-healing
- Crystallization and Solubility Studies
- Inorganic and Organometallic Chemistry
- Bone Tissue Engineering Materials
- Dendrimers and Hyperbranched Polymers
Belarusian State University
2016-2025
Centre National de la Recherche Scientifique
2007-2025
Sechenov University
2018-2025
Institut Parisien de Chimie Moléculaire
2025
Sorbonne Université
2025
École Nationale Supérieure de Chimie de Montpellier
2006-2024
Institut Charles Gerhardt Montpellier
2008-2024
Institut National des Sciences Appliquées de Lyon
2015-2023
Ingenierie des Materiaux polymeres
2015-2023
California Institute for Regenerative Medicine
2019
A design strategy for efficient MR-TADF emitters needs (i) avoiding aggregation by inducing steric hindrance at peripheral strategic positions, and (ii) combining lateral groups of higher donor character as compared to the central core.
To design versatile ordered nanomorphologies from the alternating sequence-controlled amphiphilic copolymers, in current work, we have investigated self-assembly behavior of a series prepared through reversible addition–fragmentation chain transfer (RAFT) polymerization methoxy poly(ethylene glycol) (mPEG) functionalized styrene (VBP) and fatty acid attached maleimide (MF) monomers. The copolymers efficiently induced self-aggregation pendant side chains to afford both micelle vesicle...
This article reviews recent approaches towards the synthesis of<italic>exo</italic>-olefin terminated polyisobutylenes and well-defined poly(1,3-diene)s based on their scientific industrial relevance.
The cationic polymerization of isoprene using the 1-(4-methoxyphenyl)ethanol (1)/B(C6F5)3 initiating system in solution (dichloromethane or α,α,α-trifluorotoluene) and aqueous media (suspension, dispersion, emulsion) is reported. In organic solvents reaction proceeded by controlled initiation via 1, followed irreversible termination, thus affording polymers with a number-average molar mass Mn ≤ 5000 g mol−1 distribution MMD (Mw/Mn 2.5) rather high content intact double bonds (≥70%) polymer...
Abstract This review highlights recent approaches toward polyisobutylene (PIB) by an energy efficient room temperature cationic polymerization. Special focus is laid on our own work using modified Lewis acids and nitrile‐ligated metal complexes associated with weakly coordinating anions. In both cases, suitable conditions have been found for production of PIB characterized medium to low molar masses a high content exo double bonds as end groups—the typical features highly reactive PIB,...
Aim: To assess the properties of 3D biodegradable scaffolds fabricated from novel star-shaped poly(D,L-lactide) (SSL) materials for bone tissue regeneration. Materials & methods: The SSL polymer was synthesized using an optimized synthetic procedure and applied scaffold fabrication by two-photon polymerization technique. osteogenic differentiation controlled human adipose-derived stem cells cultured 28 days. with or without murine MSCs were implanted into cranial C57/Bl6 mice. Results:...
Polymer latexes are easily prepared on a multimillion ton scale in industry using free radical initiated emulsion and suspension polymerizations water, cheap, nonviscous, heat-controlling, environmentally benign solvent. Until recently, researchers had done little investigation into ionic polymerization because even small amount of water would deactivate the conventional catalysts used these processes. In last decade, however, cationic aqueous media has emerged as new attractive method for...
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication the EditorNEXTCationic Polymerization of Isobutylene Using AlCl3OBu2 as a Coinitiator: Synthesis Highly Reactive PolyisobutyleneIrina V. Vasilenko, Alexander N. Frolov, and Sergei Kostjuk*View Author Information Research Institute for Physical Chemical Problems Belarusian State University, 14 Leningradskaya st., 220030 Minsk, Belarus*To whom correspondence should be sent. E-mail: [email protected] or protected]Cite this:...
The polymerization of β-pinene is efficiently prompted by AlCl3 etherates to afford relatively high molecular weight polymers (Mn = 9000–14 000 g mol−1) with good thermal properties (Tg 82–87 °C) at room temperature and low catalyst content (2.5–5.5 mM).
Abstract The cationic polymerization of isobutylene using 2‐phenyl‐2‐propanol (CumOH)/AlCl 3 OBu 2 and H O/AlCl initiating systems in nonpolar solvents (toluene, n ‐hexane) at elevated temperatures (−20 to 30 °C) is reported. With CumOH/AlCl system, the reaction proceeded by controlled initiation via CumOH, followed β‐H abstraction then irreversible termination, thus, affording polymers ( M = 1000–2000 g mol −1 ) with high content vinylidene end groups (85–91%), although monomer conversion...
A green and cost-efficient approach for the synthesis of bio-based poly(β-myrcene) poly(β-myrcene-<italic>co</italic>-styrene) <italic>via</italic> emulsion cationic polymerization is developed.
The living cationic polymerization of p-methoxystyrene using the 1-(4-methoxyphenyl)ethanol/B(C6F5)3 initiating system in solution and aqueous dispersion is reported. Solution experiments first showed that molar mass obtained polymers increases direct proportion to monomer conversion distribution stays narrow course (Mw/Mn ∼ 1.2). nature growing chains was confirmed by sequential addition experiments, although matrix-assisted laser desorption ionization time-of-flight spectroscopy...
Highly reactive polyisobutylenes with a desirable low <italic>M</italic><sub>n</sub> were obtained RAlCl<sub>2</sub> × O<sup>i</sup>Pr<sub>2</sub> initiating systems high monomer concentrations at room temperature.
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication the EditorNEXTCationic Polymerization of Styrene in Solution and Aqueous Suspension Using B(C6F5)3 as a Water-Tolerant Lewis AcidSergei V. Kostjuk François GanachaudView Author Information Research Institute for Physical Chemical Problems Belarusian State University, Leningradskaya St., 14, 220050 Minsk, Belarus, Laboratoire de Chimie Macromoléculaire, UMR 5076 CNRS/ENSCM, 8 Rue l'Ecole Normale, 34296 Montpellier Cedex,...
Abstract Natural rubber (NR), which is polyisoprene about 100% 1,4‐ cis of high molar mass, > 10 6 g mol −1 , mainly produced in southeast Asia and represents around 40%–45% total worldwide elastomer consumption. Whereas more than 2500 plant species are able to produce polyisoprenoids, the only established commercial source NR Hevea braziliensis . presents performance properties that so far not matched by synthetic rubbers. As a consequence, irreplaceable many applications (aircraft...
ABSTRACT The aluminum complexes containing two iminophenolate ligands of the type ( p ‐XC 6 H 4 NCHC O‐ o ) 2 AlR' (R′=Me 3, or R′=O(CH OCH=CH 5, ), X=H 5 F( 4, )) were synthesized and characterized by 1 H, 13 C NMR spectroscopy, X‐ray crystallography. reaction AlMe 3 with equivalents substituted iminophenols gave five‐coordinated {ONR} complexes. Subsequent these methyl unsaturated alcohol, HO(CH , resulted in target compounds a good yield. It was shown that ‐ are monomeric solution (NMR)...
The use of [emim]Cl–AlCl<sub>3</sub> in combination with <sup>i</sup>Pr<sub>2</sub>O allowed the synthesis HR PIB high <italic>exo</italic>-olefin end group content (≥90%) and a relatively narrow MWD (Mw/Mn ≤ 2.0) at reaction temperature (>0 °C) monomer concentration (5.2 M–7.8 M).
In this article, the current state and future perspectives in application of complexes Lewis acids with ethers synthesis highly reactive polyisobutylene (HR PIB) were critically reviewed. The metal halides showed good activity regioselectivity HR PIB only polar solvents due to their poor solubility hydrocarbons. strong contrast, high exo-olefin end group content was synthesized non-polar n-hexane using fully soluble hydrocarbons alkylaluminum dichlorides as catalysts. further improvement...