TY - JOUR

T1 - Separated local field spectroscopy of columnar and nematic liquid crystals

AU - Dvinskikh, Sergey V.

AU - Zimmermann, Herbert

AU - Maliniak, Arnold

AU - Sandström, Dick

PY - 2003/7/1

Y1 - 2003/7/1

N2 - We are in this work comparing the efficiencies of various 1H-13C separated local field (SLF) experiments when applied to columnar and nematic liquid crystals. In particular, the performances of the conventional SLF, proton-detected local field (PDLF), and polarization inversion spin exchange at the magic angle (PISEMA) methods in terms of spectral resolution, robustness, and ability to measure long-range couplings are investigated. The PDLF sequence provides in most cases the best dipolar resolution. This is especially obvious for weakly coupled 1H-13C spin pairs.

AB - We are in this work comparing the efficiencies of various 1H-13C separated local field (SLF) experiments when applied to columnar and nematic liquid crystals. In particular, the performances of the conventional SLF, proton-detected local field (PDLF), and polarization inversion spin exchange at the magic angle (PISEMA) methods in terms of spectral resolution, robustness, and ability to measure long-range couplings are investigated. The PDLF sequence provides in most cases the best dipolar resolution. This is especially obvious for weakly coupled 1H-13C spin pairs.

KW - Dipolar couplings

KW - Liquid crystals

KW - PDLF

KW - PISEMA

KW - Separated local field spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=0043261550&partnerID=8YFLogxK

U2 - 10.1016/S1090-7807(03)00058-2

DO - 10.1016/S1090-7807(03)00058-2

M3 - Article

C2 - 12852906

AN - SCOPUS:0043261550

VL - 163

SP - 46

EP - 55

JO - Journal of Magnetic Resonance - Series A

JF - Journal of Magnetic Resonance - Series A

SN - 1090-7807

IS - 1

ER -