Intermolecular Magnetic Spin-Spin Interactions in Solution State at 1.53 mT


Yildiz F., ŞAHİN Ö. , PEKSÖZ A.

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, vol.36, no.5, pp.604-613, 2015 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 5
  • Publication Date: 2015
  • Doi Number: 10.1080/01932691.2014.920258
  • Title of Journal : JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
  • Page Numbers: pp.604-613

Abstract

Overhauser dynamic nuclear polarization (DNP) technique can provide a dramatic increase in the signal obtained from nuclear magnetic resonance experiments owing to the magnetic spin-spin interactions between H-1 nuclei of the solvent and electrons delocalized on the asphaltene in crude petroleum or asphalt. Studies on H-1 Overhauser DNP enhancements at 1.53 mT are reported for benzene solvent medium with three different radical sources: Iran crude petroleum, MC30 liquid asphalt, and MC800 liquid asphalt for a range of radical concentrations. The results show that protons of benzene are good detectors for dipolar coupling.