Chemical recycling of poly(bisphenol A carbonate)
This review covers the current status of chemical recycling and upcycling of poly(bisphenol A carbonate), a leading engineering plastic of great economic and environmental interest.
Fluorescent chemosensors based on conjugated polymers with N-heterocyclic moieties: two decades of progress
A brief summary of representative fluorescent chemosensors based on conjugated polymers with N-heterocyclic moieties, followed by a discussion on the limitations and challenges of current systems, as well as possible future research directions.
Substituent effects in iniferter photopolymerization: can bond homolysis be enhanced by electronics?
Substituent effects on the dithiobenzoate moiety of RAFT iniferters are investigated. Donating groups accelerate the iniferter process, while withdrawing groups slow it. The unique efficiency of the methoxydithiobenzoate iniferter was uncovered.
Synthesis of novel polyethers with abundant reactive sites and diverse skeletons based on the ring-opening reaction of D–A cyclopropanes
Based on the ring-opening reaction of D–A cyclopropanes, a facile synthesis of novel polyethers is developed with molecular weights up to 17.7 kg mol−1.
Tailoring polymer dispersity by mixing chain transfer agents in PET-RAFT polymerization
Here we report a simple and versatile batch methodology to tailor polymer dispersity utilizing PET-RAFT polymerization.
Synthesis of terpyridine-containing polycarbonates with post polymerization providing water-soluble and micellar polymers and their metal complexes
Carbon dioxide based polymers synthesized from the metal-catalysed copolymeriation of epoxides and CO2 containing the terpyridine ligand as an end group are reported.
Metal-free polymerization: synthesis and properties of fused benzo[1,2-b:4,5-b′]bis[b]benzothiophene (BBBT) polymers
A family of fused semiconducting polymers containing the thienoacenes BBBT has been synthesized efficiently by non-metal and environmentally benign polymerization.
Online tracing of molecular weight evolution during radical polymerization via high-resolution FlowNMR spectroscopy
High-resolution FlowNMR was coupled to a continuous flow reactor to monitor polymer molecular weight evolution online by diffusion ordered NMR spectroscopy.
Stereoselective cationic polymerization of vinyl ethers by easily and finely tunable titanium complexes prepared from tartrate-derived diols: isospecific polymerization and recognition of chiral side chains
Isotactic poly(vinyl ether)s were generated by titanium TADDOLates, which can be prepared from naturally abundant tartaric acid in a facile and economical manner with well-defined structures.
Manipulating the helix–coil transition profile of synthetic polypeptides by leveraging side-chain molecular interactions
Based on the pH-sensitive, conformationally tunable triazole polypeptides, we reported the manipulation of helix–coil transition profile determined by the leveraging interactions of the triazole and other side-chain helix-influencing ligands.
Metathesis polymerization of monomers containing two diphenylacetylene units: synthesis and properties of poly(diphenylacetylene)s bearing diphenylacetylene units on the side chain
Selective metathesis polymerization provided highly emissive, gas-permeable, and thermally stable poly(diphenylacetylene)s possessing diphenylacetylene units on the side chain.
Two colours of light drive PET–RAFT photoligation
By fusing the realms of photopolymerisation and photoligation, our contribution exploits two orthogonal wavelengths of visible light to readily synthesise and functionalise well defined polymers from a unique dual functionality RAFT agent.
Simple and secure data encryption via molecular weight distribution fingerprints
A method for encryption and safe transmission of data in the shape of molecular weight distributions (MWD) is presented.
A tripodal heptadentate Schiff base as an active ligand for atom transfer radical polymerization
The use of a tripodal heptadentate Schiff base, tris[N-(2-pyridylmethyl)-2-iminoethyl]amine (Py3Tren), as an active ligand for atom transfer radical polymerization (ATRP) is reported.
Facile construction of stabilized, pH-sensitive micelles based on cyclic statistical copolymers of poly(oligo(ethylene glycol)methyl ether methacrylate-st-N,N-dimethylaminoethyl methacrylate) for in vitro anticancer drug delivery
This study developed a facile approach to improve the colloidal stability of a cyclic polycation as well as presented a pH-sensitive cyclic copolymer-based nanoplatform with great potential for anticancer drug delivery.
A N-bridged strategy enables hemilabile phosphine–carbonyl palladium and nickel catalysts to mediate ethylene polymerization and copolymerization with polar vinyl monomers
N-Bridged phosphine–carbonyl Pd(II) and Ni(II) catalysts enable the enhancement of molecular weights in ethylene polymerization and copolymerization with polar comonomers.
A novel coumarin-chitosan fluorescent hydrogel for the selective identification of Fe2+ in aqueous systems
Functional fluorescent hydrogels were synthesized, and they can detect and adsorb Fe2+ in aqueous solution.
Silylium cation initiated sergeants-and-soldiers type chiral amplification of helical aryl isocyanide copolymers
Silylium cations act as new highly efficient metal-free single-component cationic initiators for the cationic polymerization and copolymerization of chiral or achiral aryl isocyanides, preparing optically active polymers and copolymers obeying “sergeants-and-soldiers” rule.
An improved synthesis of poly(amidoamine)s for complexation with self-amplifying RNA and effective transfection
Aza-Michael addition to synthesise poly(amidoamines) was optimised to minimise appearance of bimodal molecular weight distributions caused by a radical-branching side-reaction. This significantly improved cellular delivery of a model self-amplifying RNA vaccine.
The difluoromethylthio moiety lowers the LCST of oligo(ethylene glycol)-based homopolymers
Introduction of difluoromethylthio moiety could significantly lower LCSTs of oligo(ethylene glycol)-based thermo-responsive homopolymers.
Time-dependent covalent network formation in extrudable hydrogels
Shear-thinning hydrogels that utilize thiol-Michael chain-extension and free radical polymerization have a tunable stretchability.
Poly(2-isopropenyl-2-oxazoline) – a structural analogue to poly(vinyl azlactone) with Orthogonal Reactivity
A modular copolymer platform based on two oxazole derivatives is presented. Post-polymerisation modifications revealed the potential to selectively modify the individual side groups, providing access to functional copolymer libraries in the future.
Architecture transition of supramolecular polymers through hierarchical self-assembly: from supramolecular polymers to fluorescent materials
A new supramolecular crosslinked polymer and a gel with excellent self-repairing capability were prepared by double host–guest interactions.
Facile synthesis of well-controlled poly(1-vinyl imidazole) by the RAFT process
Synthesis of well-controlled poly(1-vinyl imidazole).
Direct laser writing of poly(phenylene vinylene) on poly(barrelene)
The ring-opening metathesis polymerization of barrelene (bicyclo[2.2.2]octa-2,5,7-triene) is described and well-defined fluorescent patterns with micrometer dimensions were created by direct laser writing on films of poly(barrelene-co-norbornene).
Double neighbouring group participation for ultrafast exchange in phthalate monoester networks
We introduce here the rapid transesterification of phthalate monoester-based covalent adaptable networks thanks to a double neighbouring group participation effect.
Synthesis of fused conjugated polymers containing imidazo[2,1-b]thiazole units by multicomponent one-pot polymerization
This work describes a method for synthesis of fused cyclic conjugated polymers possessing imidazo[2,1-b]thiazole units in the main chain by reaction of heteroclyclic diazoles, dialdehydes and terminal alkyne via multicomponent one-pot processes.
Single-chain crosslinked polymers via the transesterification of folded polymers: from efficient synthesis to crystallinity control
Herein we report efficient synthetic systems of single-chain crosslinked polymers via the intramolecular transesterification of folded random copolymers in organic media and the unique crystallization behavior of their crosslinked polymers.
Folded amphiphilic homopolymer micelles in water: uniform self-assembly beyond amphiphilic random copolymers
Herein, we developed precision self-assembly systems of amphiphilic homopolymers into folded micelles in water.
Degradable sugar-based magnetic hybrid nanoparticles for recovery of crude oil from aqueous environments
We designed and fabricated a sugar-based magnetic nanocomposite material that is capable of tackling environmental pollution posed by marine oil spills, while minimizing potential secondary problems that may occur from microplastic contamination.
Self-assembly of amphiphilic alternating copolymers with stimuli-responsive rigid pendant groups
Amphiphilic alternating copolymers (AACs) possess unique self-assembly behaviours owing to their unique regular architecture.
Structures and properties of side-chain liquid crystalline polynorbornenes containing an amide group: hydrogen bonding interactions and spacer length effects
Side-chain liquid crystalline polynorbornenes based on benzanilide mesogens exhibit rich self-organization behaviours and enhanced mechanical properties owing to the lateral hydrogen bond interaction that can be tuned by the spacer length.
End-functionalised glycopolymers as glycosaminoglycan mimetics inhibit HeLa cell proliferation
A novel glycopeptide mimetic, prepared by end-functionalised conjugation of iRGD peptide on a glycopolymer, could effectively enter HeLa cells and inhibit signalling pathways involved in tumour cell proliferation.
Pro-organic radical contrast agents (“pro-ORCAs”) for real-time MRI of pro-drug activation in biological systems
Pro-organic radical contrast agents (pro-ORCAs) that enable real-time monitoring of doxorubicin prodrug activation in vitro and in vivo are prepared through brush-first ring-opening metathesis polymerization (ROMP).
Aggregation-induced emission from the crowded coronal chains of block copolymer micelles
Aggregation-induced emission (AIE) was triggered via the spatial confinement in the coronal chains in block copolymers upon micellization, even with very low content of AIE groups attached, and this could be used to monitor the self-assembly process.
Forced gradient copolymerisation: a simplified approach for polymerisation-induced self-assembly
In this work, a novel and versatile gradient copolymerisation approach to simplify polymeric nanoparticle synthesis through polymerisation-induced self-assembly (PISA) is reported.
Sequential and alternating RAFT single unit monomer insertion: model trimers as the guide for discrete oligomer synthesis
A complete set of model trimers and their synthetic kinetics are established to guide the synthesis of diverse sequence-defined polymers.
Optimization of ring-opening metathesis polymerization (ROMP) under physiologically relevant conditions
Ring opening metathesis polymerization (ROMP) is widely considered an excellent living polymerization technique that proceeds rapidly in organic solvents. This work describes the optimization of ROMP under physiologically relevant conditions.
Synthesis of aromatic polyketones by nonstoichiometric Friedel–Crafts polycondensation using AlCl3
Aromatic polyketones were successfully synthesized by Friedel–Crafts acylation using AlCl3 between aromatic dicarboxylic acid chlorides and 2,2′-dimethoxybiphenyl under both stoichiometric and nonstoichiometric conditions.
Diphenyl functional porphyrins and their metal complexes as visible-light photoinitiators for free-radical, cationic and thiol–ene polymerizations
Diphenyl functional porphyrin derivatives as new visible-light photoinitiators for efficient free-radical, cationic and thiol–ene polymerizations.
Precise control of grafting density in periodically grafted amphiphilic copolymers: an alternate strategy to fine-tune the lamellar spacing in the sub-10 nm regime
By exactly locating pendant PEG550 segments at varying intervals along a hydrocarbon-rich polyester backbone, the lamellar dimension has been precisely tuned.
Engineering the morphology of hydrogen-bonded comb-shaped supramolecular polymers: from solution self-assembly to confined assembly
A library of nanostructures and multi-stage morphology transformation are realized by introducing a 3D confined assembly to hydrogen-bonded comb-shaped supramolecular polymer architectures.
Ring-expansion cationic cyclopolymerization for the construction of cyclic cyclopolymers
A “cyclic cyclopolymer” was successfully synthesized via ring-expansion cationic cyclopolymerization with a cyclic initiator by using a divinyl ether carrying a gem-dimethyl group on the spacer as the monomer.
Water-soluble hyperbranched polyglycerol photosensitizer for enhanced photodynamic therapy
Herein, we successfully fabricated a new type of water-soluble, hyperbranched polyglycerol photosensitizer through one-step esterification between water-soluble hyperbranched polyglycerol (hbPG) and fluorophenylporphyrin (FP).
Precise tracking and modulating aggregation structures of conjugated copolymers in solutions
Different backbone shape of BDOPV-based polymers generates distinct aggregation structures in dilute solutions, which could be retained into the solid-state microstructures, further exhibiting different electron mobility and doping efficiency.
Optimizing the thermoelectric performances of conjugated polymer backbones via incorporating tailored platinum(II) acetylides
Conjugated polymers incorporated with platinum acetylides offer an effective approach to realizing both high conductivity and high Seebeck coefficient values.
Tacticity dependence of single chain polymer folding
Precision polymerization techniques offer the exciting opportunity to manufacture single-chain nanoparticles (SCNPs) with intramolecular crosslinks placed in specific positions along the polymer chain.
A general method to greatly enhance ultrasound-responsiveness for common polymeric assemblies
Ultrasound-controlled drug release is a very promising technique for controlled drug delivery due to the unique advantages of ultrasound as the stimulus.
Synthesis of well-defined heteroglycopolymers via combining sequential click reactions and PPM: the effects of linker and heterogeneity on Con A binding
A versatile post- polymerization modification strategy to synthesize well-defined glycopolymers via the combination of RAFT polymerization and sequential CuAAC and thiol–ene click reactions was developed.
Synthesis of cyclic polymers and flaws of the Jacobson–Stockmayer theory
The results of this study show that even at the highest initial monomer concentration (IMC) complete cyclization of polymer chains can be achieved at 100% conversion.
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