ORGN 117 |
| The design of new functional molecular building blocks that form nanoscale architectures of well defined size and shape through self-assembly remains a major challenge in supramolecular chemistry. Surfactants are a well-known class of compounds that self-assemble into a variety of aggregates with well-defined size and shape through the concurrent action of attractive hydrophobic and repulsive head-group interactions (Scheme 1b).1 Here we will extend these concepts to a particular useful group of functional molecules, i.e. conjugated oligomers. 2,3 It is expected that definition of size and shape renders assemblies of conjugated oligomers suitable for the construction of hierarchically structured materials and will lead to enhanced optical and electronic properties. The aim of this project is to develop conjugated oligomers for the preparation of well-defined supramolecular objects. To this extend, new conjugated amphiphilic molecules have been designed and synthesized and their self-assembling behaviour in aqueous environment has been studied (Scheme 1a).4 1 Jacob N. Israelachvili, Intermolecular and Surface Forces, 1991, 2nd ed. 2 Freek J. M. Hoeben, Pascal Jonkheijm, E. W. Meijer, and Albertus P. H. J. Schenning, Chem. Rev. 2005, 105, 1491-1546. 3 R. D. McCullough, S. Tristram-Nagle, S. P. Williams, R.D. Lowe, M. Jayaraman, J. Am. Chem. Soc. 1993, 115, 4910-4911. 4 De Feyter S., Larsson M., Schuurmans N., Verkuijl B.V., Zoriniants G., Gesquiere A., Abdel-Mottaleb M.M., van Esch J.H., Feringa B.L., van Stam J., De Schryver F., Chem. Eur. J., 2003, 9, 1198-1206.
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Total Synthesis, Materials, Devices and Switches, Molecular Recognition and Self-Assembly, Biologically-Related Molecules and Processes
8:00 PM-10:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Organic Chemistry |
