AEI 55 |
The supramolecular ordering of liquid crystalline phases provides a unique method for templating weaker transition metal interactions utilizing the microphase separation of the mesophase. Novel optical and electronic properties would be expected from mixtures of d8 and d6 metallomesogens forming one-dimensional MII…X-MIV-X structures via so-called MX chain interactions. We undertook to determine if MX chain interactions could be engendered in a liquid crystalline phase from binary mixtures of platinum mesogens. Analysis of PtLnCl2 and PtLnCl4 (Ln = dialkyl-2,2΄-bipyridine-4,4΄-dicarboxylate) complexes and binary PtII/PtIV mixtures via differential scanning calorimetry, polarizing optical microscopy, and NMR spectroscopy will be presented. The structure of the PtIV mesophase will be discussed in light of the rarity of PtIV metallomesogens. Phase diagrams and analysis of the PtLnCl2/PtLnCl4 mesophase structure through variable temperature X-ray diffractometry will be presented, and evidence for formation of PtII…Cl-PtIV interactions in a liquid crystalline phase will be discussed. |
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Academic Employment Initiative
8:00 PM-10:00 PM, Monday, August 20, 2007 BCEC -- Exhibit Hall - B2, Sci-Mix
Academic Employment Initiative |