Preparation of Layered Polymer Networks by Cross-Linking Reaction of a Liquid Crystalline Polyphosphazene in a Smectic Phase

Lee, Seung Cheol; Chang, Ji Young

doi:10.1021/ma900405t

Cited by 4 publications

(2 citation statements)

References 27 publications

(56 reference statements)

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“…4-Vinylphenol was prepared according to the procedure in the literature 15 with minor modifications. A solution of acetoxystyrene (5.0 g, 1.0 eq, 30.8 mmol) and sodium hydroxide (2.0 g, 1.6 eq, 50.0 mmol) in 50 mL of ethanol was stirred at ambient temperature for 6 h. After evaporation of the solvent, the residue was dissolved in 300 mL of ethyl acetate and subsequently washed with water 5 times.…”

Section: Synthesis Of 4-vinylphenolmentioning

confidence: 99%

Thermally responsive core–shell microparticles and cross-linked networks based on nitrone chemistry

et al. 2012

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Section: Synthesis Of 4-vinylphenolmentioning

confidence: 99%

Thermally responsive core–shell microparticles and cross-linked networks based on nitrone chemistry

et al. 2012

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“…[23][24][25] By selecting the appropriate groups attached to the phosphorous atoms, they can be fabricated into materials with diverse forms and functions. [26][27][28][29][30][31] Due to their exible synthetic character and tunable physicochemical properties, polyphosphazenes are promising in the eld of enzyme immobilization. In principle, ionic polyphosphazene hydrogels can be formed via noncovalent crosslinking and covalent crosslinking.…”

Section: Introductionmentioning

confidence: 99%

Click synthesis of ionic strength-responsive polyphosphazene hydrogel for reversible binding of enzymes

et al. 2015

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In this study, a chemically crosslinkable cationic polyphosphazene was synthesized and fabricated into ionic strength-responsive hydrogels for enzyme binding. This novel polyphosphazene was synthesized via the macromolecular substitution reaction of poly(dichlorophosphazene) with 2-dimethylaminoethylamine, followed by the quaternization to yield the allyl groups. Hydrogels were easily prepared via the thiol-ene click reaction between polyphosphazene and poly(ethylene glycol) dithiol (dithiol PEG) under UV radiation. The inner three-dimensional structure of the hydrogels was investigated by swelling experiments, mechanical property tests, and field emission-scanning electron microscopy. The resulting hydrogels exhibited sensitivity to the ionic strength of the surrounding environment. Lipase from Candida rugosa was selected as the model enzyme for the entrapment in these hydrogels, resulting in a maximum enzyme loading of 16.6 mg g À1 and activity retention as high as 61.6%. Furthermore, the cationic hydrogels were effectively used for reversible enzyme binding owing to the electrostatic interaction, regulated by the ionic strength.

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Liquid crystal phosphazenes

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Doğancı²

2022

Journal of Molecular Structure

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Preparation of Layered Polymer Networks by Cross-Linking Reaction of a Liquid Crystalline Polyphosphazene in a Smectic Phase

Cited by 4 publications

References 27 publications

Thermally responsive core–shell microparticles and cross-linked networks based on nitrone chemistry

Thermally responsive core–shell microparticles and cross-linked networks based on nitrone chemistry

Click synthesis of ionic strength-responsive polyphosphazene hydrogel for reversible binding of enzymes

Liquid crystal phosphazenes

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