Polyhedral Boranes and Carboranes as Versatile Species Employed in the Pursuit of Imaging Methods and of Nanostructured Materials

FieldValue
dc.contributor.authorMichel, Sheila
dc.date.accessioned2012-09-19T20:28:45Z
dc.date.available2012-09-19T20:28:45Z
dc.date.created2012
dc.date.issued2012
dc.identifier.urihttp://hdl.handle.net/10393/23283
dc.identifier.urihttp://dx.doi.org/10.20381/ruor-6024
dc.description.abstractPolyhedral boranes and carboranes have acquired their popularity for constructing meso and nano-size structures for an array of applications from pharmaceuticals to material science. These three-dimensional boranes range from 4 to 22 boron atom per molecules with delocalized bonding analogous to aromatic compounds. The unique vibrational spectroscopy of the BH function allows for possible application of these species to bioimaging. Silver nanoparticles functionalized with ortho-carboranes have been reported for bioimaging using Surface-enhanced Raman scattering (SERS). The silver nanoparticles were functionalized with antibodies specific to cancer cell receptors. Bonding thiol-substituted carboranes to these particles allowed for observation of enhanced Raman signals as the imaging mode. Here, attempts to synthesize second generation carborane molecules with additional Raman-active group such as nitrile were conducted. Hybrid diblock copolymers have the ability to self-assemble in different morphological patterns depending on the type and ratio of monomers and the compatibilities in various solvents. Linear hybrid diblock copolymers were synthesized by ring-opening metathesis polymerization (ROMP) reactions with norbornenyl-based decaborane and various amounts of norbornene and norbornenyl-ester derivative monomers. Their self-assembly behaviour in various solvents were characterized by NMR, TGA, DSC, and SEM. P(norbornene)60-b-p(norbornenyl-decaborane)40 polymers showed lamellar morphology patterns when slowly evaporated from chloroform. Based on results and the SEM images, a few of these diblock copolymers were used as ceramic precursors and pyrolyzed to elevated temperatures forming boron nitride and boron carbonitride nano-ordered ceramics
dc.language.isoen
dc.publisherUniversité d'Ottawa / University of Ottawa
dc.subjectcarborane
dc.subjectdecaborane
dc.subjectboron nitride
dc.titlePolyhedral Boranes and Carboranes as Versatile Species Employed in the Pursuit of Imaging Methods and of Nanostructured Materials
dc.typeThesis
dc.faculty.departmentChimie / Chemistry
dc.contributor.supervisorRicheson, Darrin
dc.embargo.termsimmediate
dc.degree.nameMSc
dc.degree.levelmasters
dc.degree.disciplineSciences / Science
thesis.degree.nameMSc
thesis.degree.levelMasters
thesis.degree.disciplineSciences / Science
uottawa.departmentChimie / Chemistry
CollectionThèses, 2011 - // Theses, 2011 -

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