Chemical shift powder spectra enhanced by multiple-contact cross-polarization under slow magic-angle spinning.

Jésus Raya, Barbara Perrone, Jérôme Hirschinger

Index: J. Magn. Reson. 227 , 93-102, (2013)

Full Text: HTML

Abstract

A simple multiple-contact cross-polarization (CP) scheme is applied to a powder sample of ferrocene and β-calcium formate under static and magic-angle spinning (MAS) conditions. The method is described analytically through the density matrix formalism. We show that multiple equilibrations-re-equilibrations with the proton spin bath improves the polarization transfer efficiency at short contact times and provides higher signal enhancements than state-of-the art techniques such as adiabatic passage through the Hartmann-Hahn condition CP (APHH-CP) when MAS is applied. The resulting chemical shift powder spectra then are identical to the ones obtained by using ROtor-Directed Exchange of Orientations CP (APHH-RODEO-CP) with intensity gains of a factor 1.1-1.3.Copyright © 2012 Elsevier Inc. All rights reserved.

Related Compounds

  • Formic Acid
  • Sodium formate
  • Formic acid ammoni...
  • Lithium formate
  • Potassium formate
  • Formic acid, magne...
  • Formate-13C sodiu...
  • Caesium formate
  • Calcium diformate

Related Articles:

Neuroprotective effect of modified Chungsimyeolda-tang, a traditional Korean herbal formula, via autophagy induction in models of Parkinson's disease.

2015-01-15

[J. Ethnopharmacol. 159 , 93-101, (2014)]

Biomolecular imaging with a C60-SIMS/MALDI dual ion source hybrid mass spectrometer: instrumentation, matrix enhancement, and single cell analysis.

2014-11-01

[J. Am. Soc. Mass Spectrom. 25(11) , 1897-907, (2014)]

Methionine oxidation accelerates the aggregation and enhances the neurotoxicity of the D178N variant of the human prion protein.

2014-12-01

[Biochim. Biophys. Acta 1842(12 Pt A) , 2345-56, (2014)]

Quantification of furanic derivatives in fortified wines by a highly sensitive and ultrafast analytical strategy based on digitally controlled microextraction by packed sorbent combined with ultrahigh pressure liquid chromatography.

2015-02-13

[J. Chromatogr. A. 1381 , 54-63, (2015)]

Silencing urease: a key evolutionary step that facilitated the adaptation of Yersinia pestis to the flea-borne transmission route.

2014-12-30

[Proc. Natl. Acad. Sci. U. S. A. 111(52) , 18709-14, (2014)]

More Articles...