About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Journal of Physical Chemistry
Paper
Optical wave spectroscopy of molecules at surfaces
Abstract
Optical spectra of molecules at surfaces have been measured with high sensitivity by new techniques utilizing optical guided and surface waves. The similarities and differences between these methods and microwave spectroscopy will be outlined, as well as a brief comparison with some of the older conventional optical techniques. Both polarization and spatial information of absorbing molecules can be determined by specific experimental arrangements and by computer analyses of the complex wave equation derived from Maxwell's equations. Results are given on the absorption of a monolayer of a cyanine dye on the surface of an optical waveguide and on a silver surface which can support plasmon surface waves. Through the use of these spectroscopic techniques we have obtained new information about molecular monolayers on surfaces and these results will be presented and discussed. © 1979 American Chemical Society.