Doctoral thesis (Dissertations and theses)
Synthesis and stabilization of colloids for optical and magnetic detections
Aqil, Abdelhafid
2008
 

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Keywords :
colloids
Abstract :
[en] The development of nano-sized particles is motivated by their optical, electronic and magnetic behavior related to quantum confinement resulting from the nanometric size. To prevent aggregation in solution, the nanoparticles are covered with stabilizing molecules. The aim of this thesis is to develop a new generation of functional copolymers with different architectures to improve the stability of various synthesized NPs. Two types of nanoparticles are considered, gold NPs for the optical properties and iron oxide NPs for the magnetic properties. The copolymers considered in this study are synthesized following a controlled radical polymerization process, i.e. Reversible Addition - Fragmentation Chain Transfer (RAFT) and confer novel properties to the coated nanoparticles. Stealth NPs are obtained when they are covered by the poly(ethylene oxide), and thermosensitive NPs when they are stabilized by the poly (N-isopropyl acrylamide). These properties have been exploited in applications in the biomedical field. Another challenge in this work is the synthesis and functionalization of the surface of carbon NPs, and thus carbon nano-capsules were synthesized by graphitization of poly (acrylic acid)-poly (acrylonitrile) micelles and carbon nanotubes have been decorated by magnetite NPs allowing their orientation in a magnetic field.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Aqil, Abdelhafid ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Synthesis and stabilization of colloids for optical and magnetic detections
Defense date :
17 January 2008
Number of pages :
159
Institution :
ULiège - Université de Liège
Degree :
Doctorat en Sciences
Promotor :
Jérôme, Christine  ;  Université de Liège - ULiège > Complex and Entangled Systems from Atoms to Materials (CESAM)
President :
De Pauw, Edwin  ;  Université de Liège - ULiège > Département de chimie (sciences)
Jury member :
Detrembleur, Christophe ;  Université de Liège - ULiège > Complex and Entangled Systems from Atoms to Materials (CESAM)
Duguet, Etienne
Jérôme, Robert ;  Université de Liège - ULiège > Département de chimie (sciences)
Muller, R.
Passirani, Catherine
Funders :
The "Région Wallonne" in the frame of the NOMADE program
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since 04 September 2009

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