ANYL 107 |
| Terahertz time-domain spectroscopy (THz-TDS) is an effective way to study low-frequency vibrational modes and weak molecular interactions such as hydrogen bonds. The high intensity of the low-frequency components of THz pulses gives THz-TDS a higher S/N than the photon detectors used for far-infrared spectroscopy. Intra- and intermolecular hydrogen bonds are important in that they stabilize the structures of many biological molecules. THz-TDS of DNA and amino acids has revealed that specific resonance patterns can be identified as the vibrational modes of intermolecular hydrogen bond networks. Changes in hydrogen bond length with temperature can be detected by frequency shifts and resonance broadening induced by heat. However, little information has yet been obtained on intramolecular hydrogen bonds. In this paper, we report a spectroscopic analysis of the intramolecular hydrogen bond systems of small hydrocarbon molecules by THz-TDS, and discuss the difference between intra- and intermolecular hydrogen bond systems. |
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General Papers
7:00 PM-9:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster
Division of Analytical Chemistry |