Silver Nanoclusters: From Design Principles to Practical Applications

Handle URI:
http://hdl.handle.net/10754/583823
Title:
Silver Nanoclusters: From Design Principles to Practical Applications
Authors:
Abdulhalim, Lina G. ( 0000-0003-0818-234X )
Abstract:
A strategy based on reticulating metal ions and organic ligands into atomically precise gold and silver nanoclusters (NCs) with high monodispersity has been advanced to a point that allows the design of NCs with strict stoichiometries, functionalities and valence. Of the Ag NCs discovered, Ag44 is the most studied, not only due to its high absorption that transcends the visible spectrum suitable for photovoltaics but also because of its long excited state lifetime, as revealed by nanosecond transient absorption spectroscopy. A major principle discovered in this dissertation is the ability to produce Ag44 in scalable amounts and with high stability in addition to modulation of the functional groups of the organic ligands via a fast and complete ligand exchange process. This new discovery has led to the development of synthetic designs in which new sizes were obtained by varying the reaction parameters (e.g., ligands functionality, reaction temperature and time), namely, Ag29 using dithiols and phosphines. The synthesized NCs possess tetravalent functionalities that facilitate their crystallization and characterization. Furthermore, Ag29 glows red and is therefore a possible candidate for sensing and imaging applications.
Advisors:
Bakr, Osman M. ( 0000-0002-3428-1002 )
Committee Member:
Beaujuge, Pierre; McCulloch, Iain ( 0000-0002-6340-7217 ) ; Mohammed, Omar F. ( 0000-0001-8500-1130 ) ; Hussain, Irshad
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program
Program:
Materials Science and Engineering
Issue Date:
8-Dec-2015
Type:
Dissertation
Appears in Collections:
Dissertations; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.advisorBakr, Osman M.en
dc.contributor.authorAbdulhalim, Lina G.en
dc.date.accessioned2015-12-13T13:42:53Zen
dc.date.available2015-12-13T13:42:53Zen
dc.date.issued2015-12-08en
dc.identifier.urihttp://hdl.handle.net/10754/583823en
dc.description.abstractA strategy based on reticulating metal ions and organic ligands into atomically precise gold and silver nanoclusters (NCs) with high monodispersity has been advanced to a point that allows the design of NCs with strict stoichiometries, functionalities and valence. Of the Ag NCs discovered, Ag44 is the most studied, not only due to its high absorption that transcends the visible spectrum suitable for photovoltaics but also because of its long excited state lifetime, as revealed by nanosecond transient absorption spectroscopy. A major principle discovered in this dissertation is the ability to produce Ag44 in scalable amounts and with high stability in addition to modulation of the functional groups of the organic ligands via a fast and complete ligand exchange process. This new discovery has led to the development of synthetic designs in which new sizes were obtained by varying the reaction parameters (e.g., ligands functionality, reaction temperature and time), namely, Ag29 using dithiols and phosphines. The synthesized NCs possess tetravalent functionalities that facilitate their crystallization and characterization. Furthermore, Ag29 glows red and is therefore a possible candidate for sensing and imaging applications.en
dc.language.isoenen
dc.subjectNanoclustersen
dc.subjectNoble Metal Nanoparticlesen
dc.subjectSingle-Crystal XRDen
dc.subjectSynthesis and Charactrizationen
dc.titleSilver Nanoclusters: From Design Principles to Practical Applicationsen
dc.typeDissertationen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
thesis.degree.grantorKing Abdullah University of Science and Technologyen_GB
dc.contributor.committeememberBeaujuge, Pierreen
dc.contributor.committeememberMcCulloch, Iainen
dc.contributor.committeememberMohammed, Omar F.en
dc.contributor.committeememberHussain, Irshaden
thesis.degree.disciplineMaterials Science and Engineeringen
thesis.degree.nameDoctor of Philosophyen
dc.person.id113379en
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