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Belford, R. Linn Smirnova, Tatyana Ivanovna 2015-09-25T22:14:11Z 2015-09-25T22:14:11Z 10000-01-01 1997 1997 It is shown that at high magnetic fields the Gd$\sp{3+}$ ion itself serves a sensitive probe for the microenvironment. This sensitivity allows, for example, observation of pH changes and measurement of partitioning of the lipophilic Gd$\sp{3+}$ complexes within the phospholipid membranes. Variations in the width and apparent g-factor of the Gd$\sp{3+}$ EPR spectra with the microenvironment observed at high fields are interpreted as changes in the zero field splitting of the complex. This argument is supported by multifrequency EPR data from 9 to 249 GHz. Made available in DSpace on 2015-09-25T22:14:11Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9737254.pdf: 9456435 bytes, checksum: 57581e6b694e87a666c511ca5dbc8512 (MD5) Previous issue date: 1997 Embargo set by: Seth Robbins for item 85653 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 205 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997. http://hdl.handle.net/2142/84372 (MiAaPQ)AAI9737254 eng Chemistry, Physical Molecular Dynamics and Spin-Spin Interactions in Complex Systems: High Field and Multifrequency EPR Approach text Chemistry Chemistry University of Illinois at Urbana-Champaign Dissertation Ph.D.