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Optical detection of NMR J-spectra at zero magnetic field by M.P. Ledbetter; C.W. Crawford; A. Pines; D.E. Wemmer; S. Knappe; J. Kitching; D. Budker is a Chemistry article available to read on EtoBox.
What is Optical detection of NMR J-spectra at zero magnetic field about?
Scalar couplings of the form JI 1 Á I 2 between nuclei impart valuable information about molecular structure to nuclear magnetic-resonance spectra. Here we demonstrate direct detection of J-spectra due to both heteronuclear and homonuclear J-coupling in a zero-field environment where the Zeeman interaction is completely absent. We show that characteristic functional groups exhibit distinct spectra with straightforward interpretation for chemical identification. Detection is performed with a microfabricated optical atomic magnetometer, providing high sensitivity to samples of microliter volumes. We obtain 0.1 Hz linewidths and measure scalar-coupling parameters with 4-mHz statistical uncertainty. We anticipate that the technique described here will provide a new modality for high-precision ''J spectroscopy" using small samples on microchip devices for multiplexed screening, assaying, and sample identification in chemistry and biomedicine.
Who reads Optical detection of NMR J-spectra at zero magnetic field?
It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- M.P. Ledbetter; C.W. Crawford; A. Pines; D.E. Wemmer; S. Knappe; J. Kitching; D. Budker
- Publisher
- Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 1090-7807)
- Published
- 2009
- Language
- EN
- Field
- Chemistry (Physical Sciences)