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dc.contributor.authorBrumby, Brelanden_US
dc.contributor.authorBachman, Roberten_US
dc.date.accessioned2012-06-05T17:46:24Z
dc.date.available2012-06-05T17:46:24Z
dc.date.issued2011-04-29en_US
dc.identifier.urihttp://hdl.handle.net/11005/278
dc.description.abstractLiquid crystalline materials composed of a platinum center chelated by a bipyridine ring and additional ligands have been of immense interest in recent years for their interesting photochemical and electrochemical behavior. The selection of ligands has the ability to selectively tune the behavior of the molecule. In this study, platinum bipyridine systems with ester chains in either the 4-4 or the 5-5' positions on the bipryidine and dithiolate or phenyl acetylide ligands were examined with cyclic voltammetry and chronocoulometry. In solution, the dithiolate series exhibited oxidation-reduction behavior independent of the ester chain length, and the presence of two reversible reductions and one irreversible oxidation was consistent with prior studies. The reversible waves have been assigned as pi to pi* transitions on the bipyridine ring and a mixed metal ligand to ligand transition (MMLLCT). Phenyl acetylides were studied in solution and as thin films on ITO-covered glass working electrodes. In solution, the phenyl acetylides had a similar bipyridine pi to pi* transition in addition to MMLLCT. Position of the ester chain influences redox behavior by possibly facilitating oxidation, as the 5-5' system is completely reversible, whereas the 4-4' system is not. The 5-5' phenyl acetylide film on ITO exhibited some color changes unseen in similar films and is currently being studied with chronocoloumetry.en_US
dc.description.sponsorshipNSF (CHE-0911070); Dr. Robert Bachman, Department of Chemistryen_US
dc.language.isoen_USen_US
dc.publisherUniversity of the Southen_US
dc.subjectScholarship Sewanee 2011en_US
dc.subjectUniversity of the South, Sewanee, Tennesseeen_US
dc.subjectPlatinumen_US
dc.subjectElectrochemistryen_US
dc.subjectLiquid crystalen_US
dc.subjectBipyridine complexesen_US
dc.titleElectrochemical Characterization of Platinum (II) Bipyridine Liquid Crystalsen_US
dc.typePresentationen_US


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