ORGN 361 |
| Conjugated polymers/oligomers form the foundation of new methods for the trace detection of analytes in a variety of environments. Electronic coupling between optoelectronic segments and efficient intra- and inter-chain energy transfer is possible due to their delocalized electronic structure. Important properties, such as charge transport, emission intensity and efficiency of exciton migration can simply be attenuated by external stimuli, leading to considerable changes in observable signals. Herein we report the synthesis and study of specially designed g-conjugated oligo(p-phenylene-ethynylene)s for application in ratiometric fluorescent sensors. The sensor compound consists of a low band gap sensing unit at the one end and a linkage at the other end to form a monolayer on a glass surface. Binding of an analyte at the receptor site results in the change of energy gap leading to an observable florescence change due to attenuated energy transfer. In this presentation we report our progress towards synthesis and studies of these materials. |
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Materials, Devices, and Switches
1:00 PM-4:40 PM, Monday, August 20, 2007 BCEC -- 258A, Oral
Division of Organic Chemistry |