ORGN 204 |
| Molecular systems responding to an energy input with an output of work are known as molecular motors (MMs). The famous examples from nature include ATP synthase and muscle tissue. Among several possible energy forms: light, heat, chemical or an electrochemical potential difference the last one is particularly attractive since it allows high spatial resolution. The known artificial MMs of this type are based on supra-molecular interactions.[1] We have synthesized several molecular motors of TTFAQ, DAA and TMPDA derivatives actuated via formation/ rapture of more energetic covalent bonds. Their main working principle is aromatic-quinoidal transformation and concomitant strain release observed in reversible oxidation to the corresponding dications and accompanied by significant conformational changes.[2,3] Introduction of thiol functional group into these systems allowed their self-assembly on Au(111) surface. The comparative studies of their structural transformations in solution and in monolayers will be presented.
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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 |
