Pro-Fluorescent Aryl Nitroxides: New Probes for Polymer Lifetime and Kinetics Research. Internal aryl rings present in novel probes developed for this project impart fluorescence which is efficiently and internally quenched by the presence of a paramagnetic nitroxide group. Scavenging of radicals by the nitroxide however "switches on" the fluorescence and this enables powerful new fluorescence-based detection levels for the technique of nitroxide free radical scavenging. Such sensitivity is a ....Pro-Fluorescent Aryl Nitroxides: New Probes for Polymer Lifetime and Kinetics Research. Internal aryl rings present in novel probes developed for this project impart fluorescence which is efficiently and internally quenched by the presence of a paramagnetic nitroxide group. Scavenging of radicals by the nitroxide however "switches on" the fluorescence and this enables powerful new fluorescence-based detection levels for the technique of nitroxide free radical scavenging. Such sensitivity is applicable to polymerization kinetics studies, as well as providing new means for the determination of materials lifetimes. The development of pro-fluorescent markers as indicators for polymer degradation would be a significant outcome for materials where component failure has a major negative impact.Read moreRead less
Mechanisms in Catalytic Chain Transfer Polymerization. The aim of the proposed research is to gain more insight into the mechanisms underlying catalytic chain transfer polymerization, a relatively recent controlled radical polymerization technique which is finding an increasing number of industrial applications, especially in the paint and coatings industry. An improved understanding of the catalytic chain transfer process, of which some very important features are still poorly understood, will ....Mechanisms in Catalytic Chain Transfer Polymerization. The aim of the proposed research is to gain more insight into the mechanisms underlying catalytic chain transfer polymerization, a relatively recent controlled radical polymerization technique which is finding an increasing number of industrial applications, especially in the paint and coatings industry. An improved understanding of the catalytic chain transfer process, of which some very important features are still poorly understood, will ultimately lead to better catalyst design and improved process and product control. This in turn will lead to novel polymeric materials.Read moreRead less
Vesicles stabilised by compressed carbon dioxide as nanoreactors and templates for radical polymerisation. A new environmentally friendly method for synthesis of surfactant vesicles involving stabilisation using low pressure carbon dioxide will be applied to the synthesis of hollow polymeric nanoparticles and polymer of well-defined structure. The resulting polymeric structures will have applications in drug delivery and nano-engineered materials.
Controlled/living radical polymerization in environmentally friendly miniemulsions induced by compressed carbon dioxide for synthesis of nanoparticles and well-defined polymer. Controlled/living radical polymerization is a technique for precise synthesis of polymer by radical polymerization, which has revolutionized polymer synthesis in terms of accessible polymer structures. However, controlled/living radical polymerization has yet to gain a strong foothold in industry mainly due to problems as ....Controlled/living radical polymerization in environmentally friendly miniemulsions induced by compressed carbon dioxide for synthesis of nanoparticles and well-defined polymer. Controlled/living radical polymerization is a technique for precise synthesis of polymer by radical polymerization, which has revolutionized polymer synthesis in terms of accessible polymer structures. However, controlled/living radical polymerization has yet to gain a strong foothold in industry mainly due to problems associated with its implementation in (aqueous) dispersed systems. The present Proposal addresses this key challenge by a novel environmentally friendly and versatile method for aqueous miniemulsion preparation by use of compressed carbon dioxide. Controlled/living radical polymerization in dispersed systems generates polymeric nanoparticles, which are of importance in many advanced and emerging technologies.Read moreRead less