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Browsing Centres Science and Engineering by Author "O'Sullivan, Catriona"

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Browsing Centres Science and Engineering by Author "O'Sullivan, Catriona"

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  • Barrett, Christopher A.; Singh, Ajay; Murphy, Joseph A.; O'Sullivan, Catriona; Buckley, D.N.; Ryan, Kevin M. (American Chemical Society, 2011)
    Colloidal carbon spheres were synthesized by the carbonization of squalane, a nonvolatile hydrocarbon solvent, in supercritical carbon dioxide. Precise pressure modulation of the fluid medium led to size controlled growth ...
  • Kelly, Dervla; Singh, Ajay; Barrett, Christopher A.; O'Sullivan, Catriona; Coughlan, Claudia; Laffir, Fathima R.; O'Dwyer, Colm; Ryan, Kevin M. (Royal Society of Chemistry, 2011)
    A facile spin cast route was developed to convert perpendicularly aligned nanorod assemblies of cadmium chalcogenides into their silver and copper analogues. The assemblies are rapidly cation exchanged without affecting ...
  • O'Sullivan, Catriona; Ahmed, Shafaat; Ryan, Kevin M. (Royal Society of Chemistry, 2008)
    A facile spin cast process is used for the instantaneous asymmetric formation of gold tips on perpendicularly aligned CdS nanorod superlattices. Tip size varies as a function of precursor solution concentration and growth ...
  • O'Sullivan, Catriona (University of Limerick, 2010)
    This thesis describes the sequential assembly of various components on to colloidal II-VI semiconductor nanorods. Semiconductor-semiconductor, semiconductor-metal and semiconductor-metal-molecule are attached to the ...
  • Gunning, Robert D.; O'Sullivan, Catriona; Ryan, Kevin M. (Royal Society of Chemistry, 2010)
    A multi rate kinetic model to explain the spontaneous oriented attachment of CdS nanorods in the presence of an amine is presented. The model demonstrates the reasons that elongation is restricted to a maximum of quadruple ...
  • O'Sullivan, Catriona; Crilly, Suzanne; Laffir, Fathima R.; Singh, Ajay; Magner, Edmond; Ryan, Kevin M. (Royal Society of Chemistry, 2011)
    A multi component assembly consisting of the redox protein cytochrome c (cyt c) immobilised onto vertically aligned gold tipped semiconductor nanorods is described. Cyt c was 10 successfully immobilised using a thiol linker. ...
  • Bala, Tanushree; Sanyal, Ambarish; Singh, Ajay; Kelly, Dervla; O'Sullivan, Catriona; Laffir, Fathima R.; Ryan, Kevin M. (Royal Society of Chemistry, 2011)
    A facile phase transfer procedure is described for the formation of uniform silver metal tips on II-VI semiconductor nanorods. Judicious choice of a functional ligand, dimethyl phenol (DMP), which binds to the semiconductor ...
  • O'Sullivan, Catriona; Gunning, Robert D.; Barrett, Christopher A.; Singh, Ajay; Ryan, Kevin M. (Royal Society of Chemistry, 2010)
    Gold tip size and multiplicity is controlled in hybrid gold-semiconductor nanorods (CdS-Au, CdSe-Au and CdTe-Au) in fast reaction times of less than 2 minutes by optimising precursor type, concentration, and temperature. ...
  • O'Sullivan, Catriona; Gunning, Robert D.; Sanyal, Ambarish; Barrett, Christopher A.; Geaney, Hugh; Laffir, Fathima R.; Ahmed, Shafaat; Ryan, Kevin M. (American Chemical Society, 2009)
    Spontaneous elongation from nanorod to nanowire in the presence of an amine is reported for nanocrystals of cadmium sulfide and silver sulfide (cation exchanged from CdS). Elongation occurs instantaneously where the final ...

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