Strategies to yield water dispersible ZnO NPs synthesized by an organometallic approach / Javier Rubio-Garcia,  

Public ISBD Titre : Strategies to yield water dispersible ZnO NPs synthesized by an organometallic approach Type de document : texte imprimé Auteurs : Javier Rubio-Garcia,, Auteur ; Myrtil Khan, Directeur de thèse ; Gauffre, Fabienne, Directeur de thèse Langues : Anglais (eng) Tags : ZnO nanoparticles  Double layer formation  Water soluble  Organometallic synthesis  PEG oligomers Résumé : "There is an ever increasing interest in the synthesis and application of semiconducting materials due to their size-dependent physical and chemical properties (nanometric range). Multiple applications have radically emerged over the last few years including in the areas of biomedicine, solar cells or electronics. Among the semiconducting materials, nanosized ZnO is a good candidate for these applications as it is a relatively inexpensive and environmentally friendly material. Physical and chemical methods allow for the production of ZnO nanostructures. For some applications ZnO nanoparticles (NPs) are required as colloidal solutions and chemical methods are advantageous. In our research group, a chemical method based on the decomposition of organometallic precursors in the presence of a stabilizing agent has been developed. Good control with respect to the average size and the size distribution is achieved. However, this strategy presents as a main drawback the production of ZnO NPs that are only dispersible in non polar solvents. Application for cosmetics or in the field of biomedicine is impeded as a result. The motivation for this Thesis has been to bring about synthetic modification of the organometallic strategy in order to achieve ZnO NPs dispersible in water: either modification of the as-synthesized particles or changes to the synthetic procedure are mandatory." Document : Thèse de Doctorat Etablissement_delivrance : Université de Toulouse 3 Date_soutenance : 20/05/2010 Ecole_doctorale : Sciences de la matière (SdM) Domaine : Chimie organométallique et de coordination En ligne : http://thesesups.ups-tlse.fr/891/ Strategies to yield water dispersible ZnO NPs synthesized by an organometallic approach [texte imprimé] / Javier Rubio-Garcia,, Auteur ; Myrtil Khan, Directeur de thèse ; Gauffre, Fabienne, Directeur de thèse . - [s.d.]. Langues : Anglais (eng) Tags : ZnO nanoparticles  Double layer formation  Water soluble  Organometallic synthesis  PEG oligomers Résumé : "There is an ever increasing interest in the synthesis and application of semiconducting materials due to their size-dependent physical and chemical properties (nanometric range). Multiple applications have radically emerged over the last few years including in the areas of biomedicine, solar cells or electronics. Among the semiconducting materials, nanosized ZnO is a good candidate for these applications as it is a relatively inexpensive and environmentally friendly material. Physical and chemical methods allow for the production of ZnO nanostructures. For some applications ZnO nanoparticles (NPs) are required as colloidal solutions and chemical methods are advantageous. In our research group, a chemical method based on the decomposition of organometallic precursors in the presence of a stabilizing agent has been developed. Good control with respect to the average size and the size distribution is achieved. However, this strategy presents as a main drawback the production of ZnO NPs that are only dispersible in non polar solvents. Application for cosmetics or in the field of biomedicine is impeded as a result. The motivation for this Thesis has been to bring about synthetic modification of the organometallic strategy in order to achieve ZnO NPs dispersible in water: either modification of the as-synthesized particles or changes to the synthetic procedure are mandatory." Document : Thèse de Doctorat Etablissement_delivrance : Université de Toulouse 3 Date_soutenance : 20/05/2010 Ecole_doctorale : Sciences de la matière (SdM) Domaine : Chimie organométallique et de coordination En ligne : http://thesesups.ups-tlse.fr/891/

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