The electrogenerated chemiluminescence of unique organic chromophores

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dc.contributor.advisorBard, Allen J.en
dc.creatorSartin, Matthew McCullough, 1982-en
dc.date.accessioned2008-08-29T00:02:23Zen
dc.date.accessioned2017-05-11T22:18:56Z
dc.date.available2008-08-29T00:02:23Zen
dc.date.available2017-05-11T22:18:56Z
dc.date.issued2007-12en
dc.description.abstractElectrogenerated chemiluminescence (ECL) studies were performed on several interesting compounds. A series of silole-based (silacyclopentadiene) chromophores was examined to understand the effects of their structure on the electrochemistry and spectroscopy of these compounds. A case was observed in which high steric hindrance improved ECL by inhibiting internal conversion and protecting radicals from secondary reactions. Another case was observed in which steric effects induced a rotation in the silole substituents, increasing secondary reactions and lowering quantum efficiency ([Phi subscript PL]). Spiro-FPA, which consists of two DPA centers, exhibits excimer formation despite high steric hindrance, due to its ability to form di-ions, which have a greater electrostatic attraction to one another than mono-ions. The compound (dppy)BTPA is a highly solvatochromic, boron-containing chromophore that was examined in a variety of solvents. Of note is the emission in pure acetonitrile, which is prominent in the ECL spectrum, but barely visible in the photoluminescence. Finally, B⁸ amide, a compound based on the laser dye, BODIPY, was examined. It exhibited unusual ECL characteristics. These include a strong, long-wavelength emission and transients that are clearly visible for 20 min or more, but display dramatically varying light intensities with each pulse. Evidence for the contribution of a film formed with the oxidation product is presented. Additionally, ECL simulations are performed using a general physics software package to better understand some of the observed phenomena.en
dc.description.departmentChemistryen
dc.description.departmentChemistry and Biochemistryen
dc.format.mediumelectronicen
dc.identifier.oclc212175920en
dc.identifier.urihttp://hdl.handle.net/2152/3667en
dc.language.isoengen
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en
dc.subject.lcshChemiluminescenceen
dc.subject.lcshElectrochemistryen
dc.subject.lcshSteric hindranceen
dc.titleThe electrogenerated chemiluminescence of unique organic chromophoresen
dc.type.genreThesisen

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