Title page for ETD etd-06062008-144900


Type of Document Dissertation
Author Sun, Ziqi
URN etd-06062008-144900
Title Studies of liquid phase intermolecular interactions utilizing 1H and l3C dynamic nuclear polarization and nuclear magnetic resonance techniques
Degree PhD
Department Chemistry
Advisory Committee
Advisor Name Title
Dorn, Harry C. Committee Chair
Davis, Richey M. Committee Member
Dillard, John G. Committee Member
Marand, Hervé L. Committee Member
Schug, John C. Committee Member
Keywords
  • nuclear
  • dynamic
  • hydrogen
  • carbon
  • polarization
Date of Defense 1996-09-10
Availability restricted
Abstract

Liquid phase l3C DNP experimental data were collected in a flow transfer system for different organic molecules, such as acetone, acetaldehyde, diethyl malonate, ethyl acetoacetate, diphenylmethane, and triphenylmethane. These molecules represent a wide range of functional groups with different acidities of the respective carbon-hydrogen bonds. The l3C DNP results demonstrated that the scalar dominated enhancement is sensitive to the acidity of carbon-hydrogen bonds as well as to the correlation times of the sample molecules. A hydrogen bonding spin polarization model is used, for the first time, to interpret the scalar components induced by the nitroxide free radical at the carbon sites of the acidic carbon-hydrogen bonds.

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