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Vinyl-type polynorbornene copolymers (P1–P3) containing side-chain triarylborane and iridium moieties were prepared by palladium(II) catalyzed copolymerization of norbornene monomers bearing triarylborane (Mes2BPh, M1) and an iridium emitter ((ppy)2Ir(acac), ppy = 2-phenyl-pyridinato-C2,N; acac = acetylacetonato, M2). Copolymerization led to facile incorporation of the comonomers in a controlled manner...
Molecularly imprinted polymers (MIPs) are tailor-made synthetic materials with binding affinities and specificities comparable to those of antibodies and enzymes. These ‘plastic’ antibodies are composed of two or more types of monomers, and are generally synthesized by free radical polymerization. Polymerization is initiated by reactive radicals generated by the thermal or photo homolysis of a chemical...
A family of self-assembling LC columnar polyethers were prepared by chemical modification of linear polyglycidol with a polymerization degree equal to 20, with the dendron 3,4,5-tris[4-(n-dodecan-1-yloxy)benzyloxy]benzoic acid by Steglich esterification. The modification degrees of the resulting LC polyethers ranged between 8 and 43%. All the obtained copolymers exhibited LC behavior and the higher...
Phase equilibria in a ternary blend of linear A/B homopolymers of equal sizes and a symmetric A-co-B ring gradient copolymer as an amphiphile with α as the ratio of their chain sizes are investigated in the mean-field picture. The monomer sequence on the copolymer chain is taken in between a step gradient and a fully linear gradient, to which a gradient number λ = 0 and 1 are assigned, respectively...
A new polycarbonate monolith carrying allyl groups has been introduced. The monolith was fabricated via the phase separation induced by adding cyclohexane to a solution of the polymer in chloroform. Cross-sectional analysis of the monolith was performed by scanning electron microscopy that unveiled a three-dimensionally networked porous structure inside the monolith. As a result of nitrogen adsorption/desorption...
An attempt has been taken to compare and study the physico-chemical properties of poly(glycidyl methacrylate)-copper nanocomposite prepared by in-situ suspension polymerization and Deposition method. Copper nanoparticles (CuNPs) were prepared during the suspension polymerization process in the former technique. The later technique comprises of (i) the synthesis of poly(glycidyl methacrylate) (PGMA)...
Inspired by an increasing demand for stimuli-controlled assembly of nanostructures, mechano-responsive nanocomposites are designed with tremendous scope in material applications. Providing switchable properties by means of mechanical stimulation, elastomer-incorporated gold nanorods (AuNR) are presented herein. Stepless and reversible control over the orientational AuNR alignment – and therefore over...
This work demonstrates the preparation of amphiphilic block copolymers with remarkable reproducibility of each block and the dual functionalization of the chain ends with a targeting unit and a fluorescent moiety. The size of the resulting micelles can be controlled between 17 and 55 nm by tuning the size of the hydrophobic block. The polymerization of the diblock was carried out by microwave assisted...
Oxidative stress caused by uncontrolled production of reactive oxygen species (ROS) has been linked to the initiation and progression of some diseases. Therefore, the use of antioxidants capable of scavenging ROS has attracted growing interest. We recently reported antioxidant micelles having catechol moieties, a structural motif found among natural antioxidants. These micelles showed a strong inhibitory...
The poly(l-lactide) (PLLA)/poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) crystalline/crystalline blends with different miscibility were prepared by varying the molecular weight of the PLLA component. The relationship between miscibility and spherulitic morphology were studied by differential scanning calorimetry (DSC), polarized optical microscopy (POM) and atomic force microscopy (AFM) in...
A two-step versatile process for telechelic polycarbonates synthesis is described. 1-n-butyl-3-methylimidazolium-2-carboxylate (BMIM-2-CO2) was used as thermolabile precursor of N-heterocyclic carbene (NHC) organocatalyst. In a first step, synthesized branched fatty diols or commercially available linear diols were reacted with an excess of dimethylcarbonate (DMC) to afford oligocarbonates with methylcarbonate...
The effect of nanoconfinement on the equilibrium free radical polymerization of methyl methacrylate (MMA) is investigated using differential scanning calorimetry. The ceiling temperature is shifted to lower temperatures in 13 nm diameter pores, with pore surface chemistry showing no significant effect. The results indicate that the change in the entropy of propagation decreases in nanopores due to...
In this study, polysilsesquioxane (PSQ) containing phthalimido side-chain groups (PSQ-PI) with solubility and high thermal stability was prepared by the two-step reaction of an ammonium-group-containing soluble ladder-like PSQ (PSQ-NH3Cl) with phthalic anhydride. First, the reaction of PSQ-NH3Cl with phthalic anhydride was performed in the presence of triethylamine in a DMSO/water mixed solvent to...
Concentrating on the case of poly(ethylene glycol) hydrogels, this paper introduces a methodology that enables a natural integration between the development of a so-called mechanistic model and experimental data relating material's processing to response. In a nutshell, we develop a data-driven modeling component that is able to learn and indirectly infer its own parameters and structure by observing...
The micellar structures of a liquid crystal ABA-type triblock copolymer in a B-selective solvent were examined using small angle X-ray scattering (SAXS) and small angle neutron scattering (SANS) at various block copolymer concentrations and different solution temperatures. Furthermore, their structures were analyzed with a generalized inverse Fourier transform method. An ABA-type triblock copolymer,...
With the development of microelectronic industry, low dielectric-constant insulating materials with high temperature performance and photopatternability have aroused interest. In this work, a kind of benzocyclobutene/vinylphenyl-introduced polycarbosilanes (PVBCS) were synthesized by H2PtCl6 catalyzed ring-opening copolymerization of 4-(1-methylsilacyclobutyl) benzocyclobutene (4-MSCBBCB) and 1-methyl-1-(4-vinylphenyl)...
Monofunctional and difunctional benzoxazines with ortho-norbornene functionality have been synthesized via Mannich condensation. The structure of synthesized monomers has been confirmed by 1H nuclear magnetic resonance spectroscopy (NMR) and Fourier transform infrared spectroscopy (FT-IR). The ortho-norbornene functional benzoxazine resins show excellent features both in the synthesis of benzoxazine...
We report on the one-pot synthesis of well-defined ABC miktoarm star terpolymers consisting of poly(ethyleneglycol)-b-poly(tert-butylacrylate)-b-polycaprolactone, (mPEG-b-PtBA-b-PCL), by using combination of click reaction and single electron transfer living radical polymerization (SET-LRP). Mono-epoxide functionalized mPEG (mPEG-EP) was synthesized and reacted with sodium azide in the presence of...
A novel conducting polymer, Poly(3-methoxythiophene-2,5-diyl-co-3,4-ethylenedioxythiophene-2,5-diyl]/tosylate (P1/tos), was synthesized by oxidative in situ polymerization using Fe(tos)3 as an oxidant. Compared with poly(3,4-ethylenedioxythiophene) (PEDOT), P1 has a deeper HOMO level and a wider energy gap as observed by ultraviolet–visible spectroscopy and photoelectron yield spectroscopy. P1/tos...
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