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Physical Chemistry Seminar Series: Franziska Theiss (Technische Universitat Darmstadt)
May 30 | 3:45 pm - 4:45 pm
About the Seminar:
From Hydrogen to Carbon – Polarization Transfer in Small Molecules
In recent years, Parahydrogen induced polarization has evolved into one of the most efficient and versatile hyperpolarization techniques, which can create enhancement factors above 1000 in a couple of seconds at very moderate costs. The presentation will give an insight into the functional extensions
of a commercial NMR instrument (11.7 T) for the application of parahydrogen based hyperpolarization techniques which has taken place at the TU Darmstadt in recent years. The focus was specifically on the methodology of polarization transfer and signal enhancement of carbon signals from non 13C labeled molecules. These signal enhancements also open up new application fields for benchtop NMR spectrometers, since lower fields need increased numbers of scans and thus longer measurement times in order to achieve a good signal to noise ratio. PHIP can make the difference between an experiment that is not detectable with reasonable effort and a detectable fast experiment at a benchtop NMR.
Beside the multifunctional NMR setup and the automated measurement protocol, our first results of hyperpolarized carbon spectra of small molecules at different magnetic fields (11.7 and 1.4 T) will be shown.