CO2-responsive polymeric materials: synthesis, self-assembly, and functional applications

Facile preparation of hybrid vesicles loaded with silica nanoparticles via aqueous photoinitiated polymerization-induced self-assembly

We report a photoinitiated dispersion polymerization of 2-hydroxypropyl methacrylate (HPMA) in the presence of silica nanoparticles using a poly(ethylene glycol) methyl ether (mPEG) macromolecular chain transfer agent (macro-CTA).

Grafting CO2-responsive polymers from cellulose nanocrystals via nitroxide-mediated polymerisation

CO₂-Responsive polymers are grafted onto cellulose nanocrystals using nitroxide-mediated polymerisation.

CO2-Responsive polymer materials

This paper reviews the chemical fundamentals of CO₂-responsive polymers as well as the latest reported “smart” material systems switched by CO₂.

CO2-Responsive graft copolymers: synthesis and characterization

The synthesis and self-assembly study of CO₂-responsive graft copolymers fabricated from a “graft-to” strategy based on pentafluorophenyl esters as grafting sites.

Grafting well-defined CO2-responsive polymers to cellulose nanocrystals via nitroxide-mediated polymerisation: effect of graft density and molecular weight on dispersion behaviour

Tertiary polyamines and polyamides were grafted to cellulose nanocrystals (CNC) via Nitroxide-Mediated Polymerisation to yield well-defined CNC, which were examined for their CO₂-responsive dispersibility in water and oil.

Fluorescent and “breathable” CO2 responsive vesicles inspired from green fluorescent protein

CO₂ responsive fluorescent vesicles from a GFP chromophore labeled block-copolymer could change their size and fluorescence to mimic jellyfish breathing.

Facile synthesis of thermo-, pH-, CO2- and oxidation-responsive poly(amido thioether)s with tunable LCST and UCST behaviors

Multi-responsive N-substituted poly(amido thioether) copolymers synthesized by one-pot amine–thiol–acrylate polyaddition could exhibit composition-dependent and stimuli-triggered single or double thermoresponsivity.

A CO2-switchable amidine monomer: synthesis and characterization

Smart system employed CO2 gas as new trigger has been attracting enormous attention in recent years, but few monomers that are capable of switching their hydrophobicity/hydrophility upon CO2 stimulation have been reported. A novel CO2 responsive monomer, 4-vinylbenzyl amidine, is designed and synthesized in this work with N,N-dimethylacetamide dimethyl acetal and 4-vinylbenzyl amine that is prepared through the Gabriel reaction. In bi-phase solvent of n-hexane and water, the monomer dissolves in n-hexane first and then transforms into water upon the CO2 treatment, indicating a hydrophobic to hydrophilic transition. This transformation is demonstrated as reversible by monitoring the conductivity variation of its wet dimethyl formamide solution during alternate bubbling/removing CO2. The protonation of 4-vinylbenzyl amidine upon CO2 treatment is demonstrated by 1H NMR which also accounts for the dissolubility change. The reversible addition-fragmentation chain-transfer polymerization of this monomer is also performed, finding the reaction only occurs in glacial acetic acid. The reason can be ascribed to the different radical structure produced in different solvent.

CO2/pH-responsive particles with built-in fluorescence read-out

A novel fluorescent monomer was synthesized to probe the state of CO₂-responsive cross-linked polymer particles.

Breathing catalyst-supports: CO2 adjustable and magnetic recyclable “smart” hybrid nanoparticles

A CO₂ stimulated, magnetic recyclable catalyst with stable catalytic performance is designed and illustrated by the combination of recently developed chemistry on CO₂ responsive polymers and nanoparticle technique.

Calix[4]arene-based low molecular mass gelators to form gels in organoalkoxysilanes

Organoalkoxysilanes-based molecular gels for melting-free deposition molding, potential smart materials for 3D printing.