Probing the structure of a rotaxane with two-dimensional infrared spectroscopy.
basic_science · Level V
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- Record sourced from PubMed, PMID 16150716.
- Also identified by PMC identifier 1198997.
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Abstract
Femtosecond 2D-IR spectroscopy has been used to study the structure of a [2]rotaxane composed of a benzylic amide macrocycle that is mechanically interlocked onto a succinamide-based thread. Both the macrocycle and the thread contain carbonyl groups, and by determining the coupling between the stretching modes of these groups from the cross-peaks in the 2D-IR spectrum, the structure of the macrocycle-thread system has been probed. Our results demonstrate that 2D-IR spectroscopy can be used to observe structural changes in molecular devices on a picosecond time scale.
Medical subject headings
- Rotaxanes