Facile access to functional polyacrylates with dual stimuli response and tunable surface hydrophobicity

Mohammad, Sk Arif; Dolui, Subrata; Kumar, Devendra; Mane, Shivshankar R.; Banerjee, Sanjib

doi:10.1039/d1py00378j

Cited by 12 publications

(23 citation statements)

References 50 publications

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“…38,39 Recently, a new polymerisation method on the basis of reversible activation-deactivation of the surface of Ni–Co alloy nanoparticles has been proposed for the synthesis of poly-methacrylate, which may become an interesting candidate in the near future as well. 40…”

Section: Introductionmentioning

confidence: 99%

Thermal response and thermochromism of methyl red-based copolymer systems – coupled responsiveness in critical solution behaviour and optical absorption properties

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Thermal response and thermochromism of methyl red-based copolymer systems – coupled responsiveness in critical solution behaviour and optical absorption properties

et al. 2022

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“…Moreover, a slight shift of the ester carbonyl stretching vibration band near 1720 cm −1 to a broader and lower wavelength number indicates the conversion of some ester groups to carboxylic acid groups, whereas after hydrolysis, the peak is also slightly split, a phenomenon previously reported as a sign of hydrogen bonding between methacrylic acid and ethylene glycol units. Lastly, the intensity of the absorption peaks related to the ester groups (near 1720 and 1135 cm −1 , assigned to the stretching vibrations of – C(=O) –O–C and – C (=O) –O –, respectively) is not affected, indicating that the backbone of the polymer chain is not damaged [ 36 , 37 , 38 , 39 ]. FT-IR spectra of solid HC 1 before and after hydrolysis are included in Figure S1 of the Supplementary Materials .…”

Section: Resultsmentioning

confidence: 99%

Hyperbranched Polyelectrolyte Copolymers as Novel Candidate Delivery Systems for Bio-Relevant Compounds

Balafouti

Pispas

2023

Materials

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In this study, reversible addition-fragmentation chain transfer (RAFT) polymerization is utilized in order to synthesize novel hyperbranched poly(oligoethylene glycol) methyl ether methacrylate-co-tert-butyl methacrylate-co-methacrylic acid) (H-[P(OEGMA-co-tBMA-co-MAA)]) copolymers in combination with selective hydrolysis reactions. The copolymers showing amphiphilicity induced by the polar OEGMA and hydrophobic tBMA monomeric units, and polyelectrolyte character due to MAA units, combined with unique macromolecular architecture were characterized by physicochemical techniques, such as size exclusion chromatography (SEC) and 1H-NMR spectroscopy. The hyperbranched copolymers were investigated in terms of their ability to self-assemble into nanostructures when dissolved in aqueous media. Dynamic light scattering and fluorescence spectroscopy revealed multimolecular aggregates of nanoscale dimensions with low critical aggregation concentration, the size and mass of which depend on copolymer composition and solution conditions, whereas zeta potential measurements indicated pH sensitive features. In addition, aiming to evaluate their potential use as nanocarriers, the copolymers were studied in terms of their drug encapsulation and protein complexation ability utilizing curcumin and lysozyme, as a model hydrophobic drug and a model cationic protein, respectively.

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“…[ 38 ] After hydrolysis to the tert ‐butyl ester group of the copolymer intensity of ─C(CH 3 ) 3 bending at 1366 cm −1 and ─C─H stretching at 2931 cm −1 decreased to a great extent. [ 40 ]…”

Section: Resultsmentioning

confidence: 99%

Magnetically Recyclable Nanoscale Zero‐Valent Iron‐Mediated PhotoRDRP in Ionic Liquid toward Smart, Functional Polymers

Sahu,

Sinha,

Kumar

et al. 2023

Macromol. Rapid Commun.

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A facile method based on recyclable nanoscale zero‐valent iron (nZVI)‐mediated photoinduced reversible deactivation radical polymerization (photoRDRP) in ionic liquid led to syn‐thesis of narrow disperse poly(tert‐butyl methacrylate), amphiphilic poly(tert‐butyl methacrylate)‐block‐poly(poly(ethylene glycol)methacrylate) (PTBMA‐b‐PPEGMA) diblock copolymer and double hydrophilic poly(methacrylic acid)‐block‐poly(poly(ethylene glycol)methacrylate) (PMAA‐b‐PPEGMA) diblock copolymers thereof. Stimuli response of the synthesized PMAA‐b‐PPEGMA diblock copolymer against variation in pH, and temperature is assessed. Recyclability of the nZVI (catalyst) and ionic liquid (solvent) is established. Polymerization may be switched ON or OFF, simply by turning the UVA light irradiation ON or OFF, offering temporal control. The diblock copolymer self‐aggregated into spherical nanoaggregates which were employed for encapsulation of coumarin 102 (a typical hydrophobic dye), describing their potential application in drug delivery applications. The facile synthesis strategy might open up new avenues for the preparation of intelligent functional polymers for engineering and biomedical applications.This article is protected by copyright. All rights reserved

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Facile access to functional polyacrylates with dual stimuli response and tunable surface hydrophobicity

Abstract: Well-defined functional polyacrylates with dual stimuli response and tunable surface hydrophobicity were synthesized via the recyclable Ni–Co alloy catalyzed reversible deactivation radical polymerization technique at ambient temperature.

Cited by 12 publications

References 50 publications

Thermal response and thermochromism of methyl red-based copolymer systems – coupled responsiveness in critical solution behaviour and optical absorption properties

Thermal response and thermochromism of methyl red-based copolymer systems – coupled responsiveness in critical solution behaviour and optical absorption properties

Hyperbranched Polyelectrolyte Copolymers as Novel Candidate Delivery Systems for Bio-Relevant Compounds

Magnetically Recyclable Nanoscale Zero‐Valent Iron‐Mediated PhotoRDRP in Ionic Liquid toward Smart, Functional Polymers

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