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Nuzzo, Ralph G. Fosser, Kari Andrea 2015-09-25T22:13:06Z 2015-09-25T22:13:06Z 10000-01-01 2004 2004 Part II. The study of saturated hydrocarbons on metal surfaces continue to be of interest in order to understand molecule-surface interactions related to C-H bond activation. Interest has also been enhanced by the presence of a unique spectral feature, a broad vibrational mode that is shifted to lower frequency from the normal C-H stretching region. This work explores the appearance and location of this soft mode in non-reactive systems by examining the vibrational spectra of cyclic and linear alkanes on Cu(111). Careful comparisons to theoretical calculations and use of isotope labeled molecules allow us to categorize the soft mode feature as one that originates from the methylene symmetric C-H stretch. The appearance of the soft mode is dependent on the molecule to surface distance and the strength of charge-transfer from the metal to the adsorbate. These studies provide a clearer interpretation regarding spectroscopic features and their significance as it relates to hydrocarbon-metal interactions. Made available in DSpace on 2015-09-25T22:13:06Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3130917.pdf: 12577852 bytes, checksum: 455cb680b8cfcf0f66e4715a9ee61501 (MD5) Previous issue date: 2004 Embargo set by: Seth Robbins for item 85416 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 233 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2004. http://hdl.handle.net/2142/84135 (MiAaPQ)AAI3130917 eng Chemistry, Analytical I. Bioanalytical Applications of Polymer Microfluidic Devices. II. Examination of Soft Vibrational Modes for Alkanes Adsorbed on Copper text Chemistry Chemistry University of Illinois at Urbana-Champaign Dissertation Ph.D.