Facile and efficient fabrication of photoresponsive microgels via thiol-Michael addition.
Macromol Rapid Commun
; 33(22): 1952-7, 2012 Nov 23.
Article
en En
| MEDLINE
| ID: mdl-22907724
A photoresponsive microgel is designed by the combination of a noncovalent assembly strategy with a covalent cross-linking method. End-functionalized poly(ethylene glycol) with azobenzene [(PEG-(Azo)(2))] was mixed with acrylate-modified ß-CD (ß-CD-MAA) to form photoresponsive inclusion complex through host-guest interaction. The above photoresponsive complex was cross-linked by thiol-functionalized PEG (PEG-dithiol) via Michael addition click reaction. The photoreversibility of resulted microgel was studied by TEM, UV-Vis spectroscopy, and (1)H NMR measurements. The characterization results indicated that the reversible size changes of the microgel could be achieved by alternative UV-Vis irradiations with good repeatability.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Compuestos de Sulfhidrilo
/
Geles
Idioma:
En
Revista:
Macromol Rapid Commun
Año:
2012
Tipo del documento:
Article
Pais de publicación:
Alemania