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Properties of polyethylene glycol/cyclodextrin hydrogels revealed by spin probes and spin labelling methods

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Properties of polyethylene glycol/cyclodextrin hydrogels revealed by spin probes and spin labelling methods. / Ionita, Gabriela; Ariciu, Ana Maria; Turcu, Ioana Maria; Chechik, Victor.

In: Soft Matter, Vol. 10, No. 11, 21.03.2014, p. 1778-1783.

Research output: Contribution to journalArticlepeer-review

Harvard

Ionita, G, Ariciu, AM, Turcu, IM & Chechik, V 2014, 'Properties of polyethylene glycol/cyclodextrin hydrogels revealed by spin probes and spin labelling methods', Soft Matter, vol. 10, no. 11, pp. 1778-1783. https://doi.org/10.1039/c3sm52004h

APA

Ionita, G., Ariciu, A. M., Turcu, I. M., & Chechik, V. (2014). Properties of polyethylene glycol/cyclodextrin hydrogels revealed by spin probes and spin labelling methods. Soft Matter, 10(11), 1778-1783. https://doi.org/10.1039/c3sm52004h

Vancouver

Ionita G, Ariciu AM, Turcu IM, Chechik V. Properties of polyethylene glycol/cyclodextrin hydrogels revealed by spin probes and spin labelling methods. Soft Matter. 2014 Mar 21;10(11):1778-1783. https://doi.org/10.1039/c3sm52004h

Author

Ionita, Gabriela ; Ariciu, Ana Maria ; Turcu, Ioana Maria ; Chechik, Victor. / Properties of polyethylene glycol/cyclodextrin hydrogels revealed by spin probes and spin labelling methods. In: Soft Matter. 2014 ; Vol. 10, No. 11. pp. 1778-1783.

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@article{3f338d656a5e482c8e9ce289bfbb4517,
title = "Properties of polyethylene glycol/cyclodextrin hydrogels revealed by spin probes and spin labelling methods",
abstract = "The properties of a gel consisting of a covalent network formed by the reaction of isocyanate end-capped polyethylene glycol (PEG) with β-cyclodextrin, were investigated by EPR spectroscopy. Spin-labelled cyclodextrin was incorporated into the cross-link points of the gel and at the chain ends. The dynamics of the gel fibres as reported by the spin label, was found to be sensitive to the H-bonding ability of the solvent, density of cross-links and temperature. Addition of spin probes (e.g., TEMPO and adamantane-TEMPO) to the unlabelled gel made it possible to characterise the solvent pools in the gel. While TEMPO was uniformly distributed throughout the solvent pools, the adamantane derivative was located at the gel fibre-solvent pool interface; these two probes thus reported on the different locations in the solvent pools. At low temperature, the gels were shown to prevent ice crystallisation in the solvent pools resulting in the formation of supercooled water. Both probes showed that the water froze at ca. 250 K, thus suggesting that the properties of the supercooled water are uniform across the solvent pools. This journal is",
author = "Gabriela Ionita and Ariciu, {Ana Maria} and Turcu, {Ioana Maria} and Victor Chechik",
year = "2014",
month = mar,
day = "21",
doi = "10.1039/c3sm52004h",
language = "English",
volume = "10",
pages = "1778--1783",
journal = "Soft Matter",
issn = "1744-683X",
publisher = "Royal Society of Chemistry",
number = "11",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Properties of polyethylene glycol/cyclodextrin hydrogels revealed by spin probes and spin labelling methods

AU - Ionita, Gabriela

AU - Ariciu, Ana Maria

AU - Turcu, Ioana Maria

AU - Chechik, Victor

PY - 2014/3/21

Y1 - 2014/3/21

N2 - The properties of a gel consisting of a covalent network formed by the reaction of isocyanate end-capped polyethylene glycol (PEG) with β-cyclodextrin, were investigated by EPR spectroscopy. Spin-labelled cyclodextrin was incorporated into the cross-link points of the gel and at the chain ends. The dynamics of the gel fibres as reported by the spin label, was found to be sensitive to the H-bonding ability of the solvent, density of cross-links and temperature. Addition of spin probes (e.g., TEMPO and adamantane-TEMPO) to the unlabelled gel made it possible to characterise the solvent pools in the gel. While TEMPO was uniformly distributed throughout the solvent pools, the adamantane derivative was located at the gel fibre-solvent pool interface; these two probes thus reported on the different locations in the solvent pools. At low temperature, the gels were shown to prevent ice crystallisation in the solvent pools resulting in the formation of supercooled water. Both probes showed that the water froze at ca. 250 K, thus suggesting that the properties of the supercooled water are uniform across the solvent pools. This journal is

AB - The properties of a gel consisting of a covalent network formed by the reaction of isocyanate end-capped polyethylene glycol (PEG) with β-cyclodextrin, were investigated by EPR spectroscopy. Spin-labelled cyclodextrin was incorporated into the cross-link points of the gel and at the chain ends. The dynamics of the gel fibres as reported by the spin label, was found to be sensitive to the H-bonding ability of the solvent, density of cross-links and temperature. Addition of spin probes (e.g., TEMPO and adamantane-TEMPO) to the unlabelled gel made it possible to characterise the solvent pools in the gel. While TEMPO was uniformly distributed throughout the solvent pools, the adamantane derivative was located at the gel fibre-solvent pool interface; these two probes thus reported on the different locations in the solvent pools. At low temperature, the gels were shown to prevent ice crystallisation in the solvent pools resulting in the formation of supercooled water. Both probes showed that the water froze at ca. 250 K, thus suggesting that the properties of the supercooled water are uniform across the solvent pools. This journal is

UR - http://www.scopus.com/inward/record.url?scp=84894483666&partnerID=8YFLogxK

U2 - 10.1039/c3sm52004h

DO - 10.1039/c3sm52004h

M3 - Article

AN - SCOPUS:84894483666

VL - 10

SP - 1778

EP - 1783

JO - Soft Matter

JF - Soft Matter

SN - 1744-683X

IS - 11

ER -