Photo-Reversible Supramolecular Hydrogels Assembled by α-Cyclodextrin and Azobenzene Substituted Poly(acrylic acid)s: Effect of Substitution Degree, Concentration, and Tethered Chain Length

Mingwei Wang; Xiaojun Zhang; Li Li; Junyou Wang; Jie Wang; Jun Ma; Zhenyu Yuan; Stephen F. Lincoln; Xuhong Guo

doi:10.1002/mame.201500295

Photo-Reversible Supramolecular Hydrogels Assembled by α-Cyclodextrin and Azobenzene Substituted Poly(acrylic acid)s: Effect of Substitution Degree, Concentration, and Tethered Chain Length

Mingwei Wang, Xiaojun Zhang, Li Li^*, Junyou Wang, Jie Wang, Jun Ma, Zhenyu Yuan, Stephen F. Lincoln, Xuhong Guo

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

24 Citations (Scopus)

Abstract

Photo-reversible supramolecular hydrogels based on the mixture of α-cyclodextrin (α-CD) and azobenzene (Azo) substituted poly(acrylic acid) s were prepared. Effects of substitution degree of Azo, polymer concentration and tethered chain length on the reversible sol-gel transition of these mixtures trigged by Ultraviolet-Visible (UV-Vis) radiation were investigated through rheology and UV-Vis spectroscopy. Their zero-shear viscosities enhanced upon increasing substitution degree of Azo, polymer concentration, and the tethered chain length between Azo grafts and backbone, while the zero viscosities decreased upon adding free α-CD. The binding constant between α-cyclodextrin and azobenzene, which were determined by UV-Vis spectroscopy, showed a strong dependence on the length of tethered chain.

Original language	English
Pages (from-to)	191-198
Journal	Macromolecular Materials and Engineering
Volume	301
Issue number	2
DOIs	https://doi.org/10.1002/mame.201500295
Publication status	Published - 2016

Keywords

Azobenzene
Photo-responsive
Polymeric hydrogel
Rheology
α-Cyclodextrin

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10.1002/mame.201500295

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Wang, M., Zhang, X., Li, L., Wang, J., Wang, J., Ma, J., Yuan, Z., Lincoln, S. F., & Guo, X. (2016). Photo-Reversible Supramolecular Hydrogels Assembled by α-Cyclodextrin and Azobenzene Substituted Poly(acrylic acid)s: Effect of Substitution Degree, Concentration, and Tethered Chain Length. Macromolecular Materials and Engineering, 301(2), 191-198. https://doi.org/10.1002/mame.201500295

@article{76f6c7d14eb04b27b4fc5a4578579fe4,

title = "Photo-Reversible Supramolecular Hydrogels Assembled by α-Cyclodextrin and Azobenzene Substituted Poly(acrylic acid)s: Effect of Substitution Degree, Concentration, and Tethered Chain Length",

abstract = "Photo-reversible supramolecular hydrogels based on the mixture of α-cyclodextrin (α-CD) and azobenzene (Azo) substituted poly(acrylic acid) s were prepared. Effects of substitution degree of Azo, polymer concentration and tethered chain length on the reversible sol-gel transition of these mixtures trigged by Ultraviolet-Visible (UV-Vis) radiation were investigated through rheology and UV-Vis spectroscopy. Their zero-shear viscosities enhanced upon increasing substitution degree of Azo, polymer concentration, and the tethered chain length between Azo grafts and backbone, while the zero viscosities decreased upon adding free α-CD. The binding constant between α-cyclodextrin and azobenzene, which were determined by UV-Vis spectroscopy, showed a strong dependence on the length of tethered chain.",

keywords = "Azobenzene, Photo-responsive, Polymeric hydrogel, Rheology, α-Cyclodextrin",

author = "Mingwei Wang and Xiaojun Zhang and Li Li and Junyou Wang and Jie Wang and Jun Ma and Zhenyu Yuan and Lincoln, {Stephen F.} and Xuhong Guo",

year = "2016",

doi = "10.1002/mame.201500295",

language = "English",

volume = "301",

pages = "191--198",

journal = "Macromolecular Materials and Engineering",

issn = "1438-7492",

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number = "2",

}

Wang, M, Zhang, X, Li, L, Wang, J, Wang, J, Ma, J, Yuan, Z, Lincoln, SF & Guo, X 2016, 'Photo-Reversible Supramolecular Hydrogels Assembled by α-Cyclodextrin and Azobenzene Substituted Poly(acrylic acid)s: Effect of Substitution Degree, Concentration, and Tethered Chain Length', Macromolecular Materials and Engineering, vol. 301, no. 2, pp. 191-198. https://doi.org/10.1002/mame.201500295

Photo-Reversible Supramolecular Hydrogels Assembled by α-Cyclodextrin and Azobenzene Substituted Poly(acrylic acid)s: Effect of Substitution Degree, Concentration, and Tethered Chain Length. / Wang, Mingwei; Zhang, Xiaojun; Li, Li et al.
In: Macromolecular Materials and Engineering, Vol. 301, No. 2, 2016, p. 191-198.

Research output: Contribution to journal › Article › Academic › peer-review

TY - JOUR

T1 - Photo-Reversible Supramolecular Hydrogels Assembled by α-Cyclodextrin and Azobenzene Substituted Poly(acrylic acid)s

T2 - Effect of Substitution Degree, Concentration, and Tethered Chain Length

AU - Wang, Mingwei

AU - Zhang, Xiaojun

AU - Li, Li

AU - Wang, Junyou

AU - Wang, Jie

AU - Ma, Jun

AU - Yuan, Zhenyu

AU - Lincoln, Stephen F.

AU - Guo, Xuhong

PY - 2016

Y1 - 2016

N2 - Photo-reversible supramolecular hydrogels based on the mixture of α-cyclodextrin (α-CD) and azobenzene (Azo) substituted poly(acrylic acid) s were prepared. Effects of substitution degree of Azo, polymer concentration and tethered chain length on the reversible sol-gel transition of these mixtures trigged by Ultraviolet-Visible (UV-Vis) radiation were investigated through rheology and UV-Vis spectroscopy. Their zero-shear viscosities enhanced upon increasing substitution degree of Azo, polymer concentration, and the tethered chain length between Azo grafts and backbone, while the zero viscosities decreased upon adding free α-CD. The binding constant between α-cyclodextrin and azobenzene, which were determined by UV-Vis spectroscopy, showed a strong dependence on the length of tethered chain.

AB - Photo-reversible supramolecular hydrogels based on the mixture of α-cyclodextrin (α-CD) and azobenzene (Azo) substituted poly(acrylic acid) s were prepared. Effects of substitution degree of Azo, polymer concentration and tethered chain length on the reversible sol-gel transition of these mixtures trigged by Ultraviolet-Visible (UV-Vis) radiation were investigated through rheology and UV-Vis spectroscopy. Their zero-shear viscosities enhanced upon increasing substitution degree of Azo, polymer concentration, and the tethered chain length between Azo grafts and backbone, while the zero viscosities decreased upon adding free α-CD. The binding constant between α-cyclodextrin and azobenzene, which were determined by UV-Vis spectroscopy, showed a strong dependence on the length of tethered chain.

KW - Azobenzene

KW - Photo-responsive

KW - Polymeric hydrogel

KW - Rheology

KW - α-Cyclodextrin

U2 - 10.1002/mame.201500295

DO - 10.1002/mame.201500295

M3 - Article

SN - 1438-7492

VL - 301

SP - 191

EP - 198

JO - Macromolecular Materials and Engineering

JF - Macromolecular Materials and Engineering

IS - 2

ER -

Photo-Reversible Supramolecular Hydrogels Assembled by α-Cyclodextrin and Azobenzene Substituted Poly(acrylic acid)s: Effect of Substitution Degree, Concentration, and Tethered Chain Length

Abstract

Keywords

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