ORGN 285 |
| The general goal of our on-going research program is the identification of strategies and materials to manipulate optical signals with molecular components. In this context, we are developing three research projects in parallel. They are all centered around the design, synthesis and analysis of heterocyclic compounds. In one instance, we have developed photoresponsive oxazines able to interconvert reversibly between colorless and colored states with nanosecond switching speeds and excellent fatigue resistances. In fact, these molecules can become the basic building blocks of fast and stable photochromic materials with unprecedented performance. In addition, we have learned how to operate these interconvertible compounds with pH stimulations and switch the luminescence of semiconductor quantum dots on the basis of electron and energy transfer processes. Indeed, these operating principles for luminescence switching can lead to the development of a new generation of sensitive probes based on the unique photophysical properties of quantum dots. Finally, we have designed a strategy to assemble electroactive multilayers on the surface of metallic electrodes in a single experimental step. The electrochemical reduction and re-oxidation of the resulting films can be exploited to switch reversibly between colorless and colored states, offering the opportunity to implement innovative electrochromic materials. |
|
Chemistry of the Mechanical Bond and Beyond
8:00 AM-12:00 PM, Monday, August 20, 2007 BCEC -- 253 A/B/C, Oral
Division of Organic Chemistry |