INOR 222 |
| Tuning the electronic properties of π-conjugated aromatic compounds is of current interest within the development of molecular electronics, and the realization of efficient organic-based electroluminescent devices. Such devices suffer from poor hole and electron mobilities, and low emission efficiencies due to spin constraints preventing significant phosphorescent emission. Although azulene is isomeric with naphthalene, the former is blue in colour whereas the latter is colourless due to an inherent desymmetrisation of the frontier MOs. In order to address the above issues the organometallic chemistry of metallo-azulene derivatives incorporating heavy elements has been examined revealing strong, metal-mediated, electronic absorption and emission spectra indicative of low energy intraligand charge transfer (ILCT) transitions. The synthesis, characterization and spectroscopic investigation of Platinum and Gold based luminescent materials of azulene and naphthalene will be discussed and compared as well as the nature of their electronic structures fully rationalised with the aid of DFT calculational methods. |
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General Organometallic Chemistry
7:00 PM-10:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster
Sci-Mix
Division of Inorganic Chemistry |