Hierarchical self-assembly of nanoparticles using reversible addition-fragmentation chain-transfer block copolymers

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dc.contributor.authorBurns, Fraser
dc.contributor.supervisorMoffitt, Matthew
dc.date.accessioned2018-12-14T20:26:50Z
dc.date.available2018-12-14T20:26:50Z
dc.date.copyright2018en_US
dc.date.issued2018-12-14
dc.degree.departmentDepartment of Chemistry
dc.degree.levelMaster of Science M.Sc.en_US
dc.description.abstractThe hierarchical self-assembly of cadmium based quantum dots through the use of RAFT block copolymers have been investigated. The formation of cadmium selenide quantum dots within the core of tetrablock RAFT copolymers in three different solvents, dioxane, THF and DMF was investigated experimentally and computationally. It was determined that aggregation of the PAA core-forming blocks prevented the formation of stable dispersions of the CdSe quantum dots in DMF and THF, while dioxane was found to be a suitable solvent. The cadmium selenide quantum dots exhibit a near band-edge emission centered at 520 nm with a hydrodynamic diameter of 20 nm. The assembly of RAFT copolymer encapsulated cadmium sulfide quantum dots with gold nanoparticles was explored. It was determined that with increasing concentration of gold nanoparticles, there was an increase in emission amplification. Subsequent self-assembly into large compound micelles with PS-b-PAA block copolymer was investigated and determined to form large, water-soluble compound micelles.en_US
dc.description.scholarlevelGraduateen_US
dc.identifier.bibliographicCitationMarcelo, G.; Burns, F. P.; Riebeiro T.; Martinho, J. M. G.; Tarazona, M. P.; Saiz, E.; Moffitt, M. G.; Farinha, J. P. S., A Versatile Tetrablock Copolymer Scaffold for Hierarchical Colloidal Nanoparticle Assemblies: Synthesis, Characterization, and Molecular Dynamics Simulations. Langmuir, 33, 8201-8212.en_US
dc.identifier.urihttp://hdl.handle.net/1828/10410
dc.languageEnglisheng
dc.language.isoenen_US
dc.rightsAvailable to the World Wide Weben_US
dc.subjectNanoparticleen_US
dc.subjectBlock Copolymeren_US
dc.subjectGolden_US
dc.subjectCadmiumen_US
dc.subjectSelf-Assemblyen_US
dc.subjectRAFTen_US
dc.subjectPolystyreneen_US
dc.subjectPoly(acrylic acid)en_US
dc.subjectPolymer Micellesen_US
dc.subjectEmission Amplificationen_US
dc.titleHierarchical self-assembly of nanoparticles using reversible addition-fragmentation chain-transfer block copolymersen_US
dc.typeThesisen_US

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