Laser-Ionization Time-of-Flight Mass Spectrometry of High Molecular Mass Inorganic Complexes

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dc.contributor.authorWatson, R. Craig Jr.en
dc.contributor.committeechairTissue, Brian M.en
dc.contributor.committeememberAnderson, Mark R.en
dc.contributor.committeememberLong, Gary L.en
dc.contributor.departmentChemistryen
dc.date.accessioned2014-03-14T20:47:19Zen
dc.date.adate1997-11-04en
dc.date.available2014-03-14T20:47:19Zen
dc.date.issued1997-10-17en
dc.date.rdate1998-11-04en
dc.date.sdate1997-10-17en
dc.description.abstractLaser-Ionization Time-of-Flight Mass Spectrometry (LI-TOF-MS) is a sophisticated tool for the molecular-weight determination and structural characterization of a variety of molecules. Advances in instrumentation and ionization methods have recently expanded its role in the analysis of high-mass analytes. Large multimetallic complexes, which are efficient solar-energy converters, rely heavily on their chemical structure for optimum operation. Molecular mass determinations of these multimetallic complexes have been problematic due to their lability and high molecular weights. This thesis describes the characterization of a LI-TOF-MS instrument and confirmation of theoretical time-of-flight mass-separation principles. Several test cases demonstrate the instrument's proper operation and calibration for a wide mass range of analytes. Mass spectral results of three organometallic compounds: i. [Ir(dpp)₂Cl₂](PF₆), ii. {[(bpy)₂Ru(dpp)]₂IrCl₂}(PF₆)₅, and iii. {[(bpy)₂Ru(dpp)]₂RuCl₂}(PF₆)₅ under a variety of laser ionization and sample preparation conditions are compared. A complete structural characterization of the monometallic complex, [Ir(dpp)₂Cl₂](PF₆), is presented. The two trimetallic analytes fragmented easily, but significant components of the molecules are successfully identified. After optimizing the ionization and analytical procedure, LI-TOF-MS proved useful in the analysis of high molecular mass metal complexes.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-10397-131328en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10397-131328/en
dc.identifier.urihttp://hdl.handle.net/10919/35554en
dc.publisherVirginia Techen
dc.relation.haspartetd-titleabstractacknowl.pdfen
dc.relation.haspartTABLE_OF_CONTENTS.pdfen
dc.relation.haspartTABLE_OF_FIGURES.pdfen
dc.relation.haspartch1introduction.pdfen
dc.relation.haspartch2instrumentdesign.pdfen
dc.relation.haspartch3instrumcharact.PDFen
dc.relation.haspartch4dopedmetaloxides.pdfen
dc.relation.haspartch5fullerenes.pdfen
dc.relation.haspartch6inorganicsmaldi.pdfen
dc.relation.haspartch7conclusions.pdfen
dc.relation.haspartVITA.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectLaser ionizationen
dc.subjectMass spectrometryen
dc.subjectMatrix-assisted-laser desorption/ionizationen
dc.subjectMALDIen
dc.subjectOrganometallic complexesen
dc.subjectReflectronen
dc.subjectTime-of-flighten
dc.titleLaser-Ionization Time-of-Flight Mass Spectrometry of High Molecular Mass Inorganic Complexesen
dc.typeThesisen
thesis.degree.disciplineChemistryen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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