INOR 289 |
| Multicomponent solids, be they cocrystals or solid solutions, may be viewed as materials that exhibit new or superior functions relative to the individual components. Though molecular complexes have been studied for a long time, the design of cocrystals containing more than two different components remains a challenging task. Except for a few notable contributions, most studies on organic cocrystals led only to the formation of binary organic solids. In contrast, metals and inorganic compounds readily form multicomponent solids in the form of solid solutions. Creating multicomponent solid solutions of organic molecules, however, is challenging because these molecules possess intricate shapes and participate in directional intermolecular interactions. Not surprisingly, most molecule-based solid solutions contain only two components. Herein, we describe a supramolecular approach for the preparation of solid solutions that contain three or more organic molecules. Four different types of supramolecular synthons, hydroxy-pyridyl, hydroxy-amino, carboxy-amido, and caboxy-aminopyridyl are shown to form the solid solutions. Bimolecular and trimolecular assemblies are used as templates for the creation of these unique alloys. The components in these alloys range from halogenated and methylated benzoic acids, phenols, and anilines to nonaromatic cyclic diazines. The principal advantage of solid solutions is that their properties can be modulated by the gradual modification of the relative ratio of the components. |
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Solid State Chemistry
7:00 PM-10:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster
Sci-Mix
Division of Inorganic Chemistry |