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

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Atıf İçin Kopyala

Yildiz F., ŞAHİN Ö., PEKSÖZ A.

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, cilt.36, sa.5, ss.604-613, 2015 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 36 Sayı: 5
• Basım Tarihi: 2015
• Doi Numarası: 10.1080/01932691.2014.920258
• Dergi Adı: JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Sayfa Sayıları: ss.604-613
• Bursa Uludağ Üniversitesi Adresli: Evet

Özet

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.