Article (Scientific journals)
Gold nanorods coated with a thermo-responsive poly(ethylene glycol)-b-poly(N-vinylcaprolactam) corona as drug delivery systems for remotely near infrared-triggered release
Liu, Ji; Detrembleur, Christophe; De Pauw-Gillet, Marie-Claire et al.
2014In Polymer Chemistry, 5 (3), p. 799-813
Peer Reviewed verified by ORBi
 

Files


Full Text
Liu J 2014 Polym Chem 5,799.pdf
Publisher postprint (1.27 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
biomaterial; nanomedecine
Abstract :
[en] Poly(ethylene glycol)-b-poly(N-vinylcaprolactam) (PEG-b-PNVCL) copolymers are prepared from a PEG macro-chain transfer agent in DMF at 65 °C via reversible addition-fragmentation chain transfer (RAFT) polymerization. The well-defined PEG114-b-PNVCL237 copolymer with a cloud point temperature of 39 °C is used for the formation of a thermo-responsive polymer corona on the surface of gold nanorods (GNRs) via a “grafting-to” approach. Thermo-responsiveness and thermo-dependent optical properties of the as-obtained GNR@PEG-b-PNVCL nanoparticles are studied with dynamic light scattering and UV/vis spectroscopy techniques. Near infrared (NIR)-induced heating of GNR@PEG-b-PNVCL is also explored in aqueous suspension under NIR laser irradiation (802 nm, up to 250 mW). The potential of these GNR@PEG-b-PNVCL nanoparticles to be used as smart drug delivery systems (DDS) is then studied. A hydrophilic drug model, Rhodamine ® B, is used to assess the guest loading capacity, and triggered release behaviours are then evaluated under conventional external heating or internal heating induced by remote NIR irradiation. Cytotoxicity evaluation of the GNR@PEG-b-PNVCL against the fibroblast-like L929 cell line is carried out via the MTS assay in order to confirm the improved biocompatibility of the GNRs after polymer coating. These thermo-responsive GNR@PEG-b-PNVCL nanoparticles are promising DDS that combine the chemotherapeutic and phototherapeutic functions.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Liu, Ji ;  Université de Liège - ULiège and University of Bordeaux > Department of Chemistry of Liège > Center for Education and Research on Macromolecules (CERM, Liège)
Detrembleur, Christophe ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
De Pauw-Gillet, Marie-Claire ;  Université de Liège - ULiège > Biomedical Sciences and Preclinical Department > Laboratory of Histology and Cytology
Mornet, Stéphane;  University of Bordeaux
Duguet, Etienne;  University of Bordeaux
Jérôme, Christine  ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Gold nanorods coated with a thermo-responsive poly(ethylene glycol)-b-poly(N-vinylcaprolactam) corona as drug delivery systems for remotely near infrared-triggered release
Publication date :
07 February 2014
Journal title :
Polymer Chemistry
ISSN :
1759-9954
eISSN :
1759-9962
Publisher :
Royal Society Chemistry, Cambridge, United Kingdom
Volume :
5
Issue :
3
Pages :
799-813
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
The European Community Erasmus Mundus International Doctoral School "IDS FunMat"
Available on ORBi :
since 11 October 2013

Statistics


Number of views
87 (17 by ULiège)
Number of downloads
6 (6 by ULiège)

Scopus citations®
 
65
Scopus citations®
without self-citations
59
OpenCitations
 
56

Bibliography


Similar publications



Contact ORBi