Table of Contents Author Guidelines Submit a Manuscript
International Journal of Spectroscopy
Volume 2014 (2014), Article ID 641473, 8 pages
http://dx.doi.org/10.1155/2014/641473
Research Article

Two-Pulse Phase Modulation Based Decoupling Schemes for Removing Heteronuclear Spin Interactions in the NMR Spectroscopy of Isotropic Systems: An Analysis Using Experiments and Numerical Simulations

Department of Chemistry, St. Berchmans College Campus, Mahatma Gandhi University, Kottayam, Kerala 686101, India

Received 29 January 2014; Accepted 7 April 2014; Published 15 May 2014

Academic Editor: Guang Zhu

Copyright © 2014 Cyril Augustine. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. M. H. Levitt, Spin Dynamics: Basics of Nuclear Magnetic Resonance, John Wiley & Sons, New York, NY, USA, 2001.
  2. R. Fu and G. Bodenhausen, “Evaluation of adiabatic frequency-modulated schemes for broadband decoupling in isotropic liquids,” Journal of Magnetic Resonance. Series A, vol. 119, no. 1, pp. 129–133, 1996. View at Google Scholar · View at Scopus
  3. M. H. Levitt and R. Freeman, “Composite pulse decoupling,” Journal of Magnetic Resonance, vol. 43, no. 3, pp. 502–507, 1981. View at Google Scholar · View at Scopus
  4. A. J. Shaka and J. Keeler, “Broadband spin decoupling in isotropic-liquids,” Progress in Nuclear Magnetic Resonance Spectroscopy, vol. 19, no. 1, pp. 47–129, 1987. View at Google Scholar · View at Scopus
  5. R. S. Thakur, N. D. Kurur, and P. K. Madhu, “Swept-frequency two-pulse phase modulation for heteronuclear dipolar decoupling in solid-state NMR,” Chemical Physics Letters, vol. 426, no. 4-6, pp. 459–463, 2006. View at Publisher · View at Google Scholar · View at Scopus
  6. A. E. Bennett, C. M. Rienstra, M. Auger, K. V. Lakshmi, and R. G. Griffin, “Heteronuclear decoupling in rotating solids,” The Journal of Chemical Physics, vol. 103, no. 16, pp. 6951–6958, 1995. View at Google Scholar · View at Scopus
  7. R. S. Thakur, N. D. Kurur, and P. K. Madhu, “Improved heteronuclear dipolar decoupling sequences for liquid-crystal NMR,” Journal of Magnetic Resonance, vol. 185, no. 2, pp. 264–269, 2007. View at Publisher · View at Google Scholar · View at Scopus
  8. R. S. Thakur, N. D. Kurur, and P. K. Madhu, “An analysis of phase-modulated heteronuclear dipolar decoupling sequences in solid-state nuclear magnetic resonance,” Journal of Magnetic Resonance, vol. 193, no. 1, pp. 77–88, 2008. View at Publisher · View at Google Scholar · View at Scopus
  9. R. S. Thakur, N. D. Kurur, and P. K. Madhu, “An experimental study of decoupling sequences for multiple-quantum and high-resolution MAS experiments in solid-state NMR,” Magnetic Resonance in Chemistry, vol. 46, no. 2, pp. 166–169, 2008. View at Publisher · View at Google Scholar · View at Scopus
  10. C. V. Chandran, P. K. Madhu, N. D. Kurur, and T. Bräuniger, “Swept-frequency two-pulse phase modulation (SWf-TPPM) sequences with linear sweep profile for heteronuclear decoupling in solid-state NMR,” Magnetic Resonance in Chemistry, vol. 46, no. 10, pp. 943–947, 2008. View at Publisher · View at Google Scholar · View at Scopus
  11. C. V. Chandran and T. Bräuniger, “Efficient heteronuclear dipolar decoupling in solid-state NMR using frequency-swept SPINAL sequences,” Journal of Magnetic Resonance, vol. 200, no. 2, pp. 226–232, 2009. View at Publisher · View at Google Scholar · View at Scopus
  12. C. V. Chandran, P. K. Madhu, P. Wormald, and T. Bräuniger, “Frequency-swept pulse sequences for 19F heteronuclear spin decoupling in solid-state NMR,” Journal of Magnetic Resonance, vol. 206, no. 2, pp. 255–263, 2010. View at Publisher · View at Google Scholar · View at Scopus
  13. C. Augustine and N. D. Kurur, “Heteronuclear dipolar decoupling in liquid-crystal NMR using supercycled SWf-TPPM sequences,” Magnetic Resonance in Chemistry, vol. 48, no. 10, pp. 798–803, 2010. View at Publisher · View at Google Scholar · View at Scopus
  14. C. Augustine and N. D. Kurur, “Supercycled SWf-TPPM sequence for heteronuclear dipolar decoupling in solid-state nuclear magnetic resonance,” Journal of Magnetic Resonance, vol. 209, no. 2, pp. 156–160, 2011. View at Publisher · View at Google Scholar · View at Scopus
  15. M. H. Levitt, R. Freeman, and T. Frenkiel, “Broadband heteronuclear decoupling,” Journal of Magnetic Resonance, vol. 47, no. 2, pp. 328–330, 1982. View at Google Scholar · View at Scopus
  16. M. H. Levitt, R. Freeman, and T. Frenkiel, “Supercycles for broadband heteronuclear decoupling,” Journal of Magnetic Resonance, vol. 50, no. 1, pp. 157–160, 1982. View at Google Scholar · View at Scopus
  17. M. H. Levitt, R. Freeman, and T. Frenkiel, “Broadband decoupling in high-resolution nuclear magnetic resonance spectroscopy,” Advances in Magnetic and Optical Resonance, vol. 11, pp. 47–110, 1983. View at Publisher · View at Google Scholar
  18. A. J. Shaka, J. Keeler, T. Frenkiel, and R. Freeman, “An improved sequence for broadband decoupling: WALTZ-16,” Journal of Magnetic Resonance, vol. 52, no. 2, pp. 335–338, 1983. View at Google Scholar · View at Scopus
  19. A. J. Shaka, J. Keeler, and R. Freeman, “Evaluation of a new broadband decoupling sequence: WALTZ-16,” Journal of Magnetic Resonance, vol. 53, no. 2, pp. 313–340, 1983. View at Google Scholar · View at Scopus
  20. A. J. Shaka, P. B. Barker, and R. Freeman, “Computer-optimized decoupling scheme for wideband applications and low-level operation,” Journal of Magnetic Resonance, vol. 64, no. 3, pp. 547–552, 1985. View at Google Scholar · View at Scopus
  21. Y. Yu and B. M. Fung, “An efficient broadband decoupling sequence for liquid crystals,” Journal of Magnetic Resonance, vol. 130, no. 2, pp. 317–320, 1998. View at Google Scholar · View at Scopus
  22. B. M. Fung, A. K. Khitrin, and K. Ermolaev, “An improved broadband decoupling sequence for liquid crystals and solids,” Journal of Magnetic Resonance, vol. 142, no. 1, pp. 97–101, 2000. View at Google Scholar · View at Scopus