The first double quantum two-dimensional Fourier transform electron spin resonance (2D-ET ESR) experiments are reported. Extension of 2D-FT ESR to enable detection of the AM, = f2 transition enhances the capability of ESR in studying structural properties (i.e. distances in bilabeled molecules). A d
Two-dimensional Fourier-transform electron spin resonance in complex fluids
β Scribed by Sanghyuk Lee; Baldev R. Patyal; Sunil Saxena; Richard H. Crepeau; Jack H. Freed
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 945 KB
- Volume
- 221
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Two-dimensional Fourier-transform ESR spectra from a complex fluid characterized by very short free induction decay times are reported. They provide enhanced resolution to dynamic molecular structure compared to conventional cw-ESR spectra which are inhomogeneously broadened by the macroscopic disorder. A general theoretical analysis based on the stochastic Liouville equation permits us to accurately determine the microscopic ordering and motional dynamic rates by non-linear least-squares fitting to experiment.
π SIMILAR VOLUMES
A methodology for obtaining pure absorption two-dimensional electron spin resonance spectra is presented for the case of large inhomogeneous broadening and/or slow motions. For slow motions, the spectra consist of "complex Lorentzians" superimposed with complex weighting factors, presenting a challe
A method to generate the phase continuity necessary to perform broad-band two-dimensional Fourier transform ion cyclotron resonance (2D Ff/ICR) spectroscopy is proposed. This technique is used for studying ion-molecule reactions and multiphoton dissociation of ions in the gas phase. In a single two-