Article ID Journal Published Year Pages File Type
1252314 Vibrational Spectroscopy 2007 7 Pages PDF
Abstract
Transition moment directions of the vibrational states of nitro and carbonyl groups of p-nitrobenzyl-16-mercaptohexadecanoate are evaluated by infrared linear dichroism (IR LD) to be further exploited as film orientation markers in self-assembled monolayers (SAMs) that the respective compound forms on metal surfaces. DFT calculations followed by a complete normal coordinate analysis were employed to assist in the vibrational bands assignments. The analysis of the experimental IR LD spectra in conjunction with the step-wise reduction procedure of Thulstrup-Eggers indicated that the transition moment directions of the antisymmetric NO2 stretching and the carbonyl stretching modes are collinear, and confirmed previous results that those of the symmetric and the antisymmetric NO2 stretching vibrations are not exactly mutually perpendicular.
Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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