This paper discusses fundamental electrooptiqal properties of porphyrin-like molecules. The experimental data obtained from a monolayer of phthalocyanine molecules adsorbed on a silver electrode show fast (<l0−12s) optical response, multilevel and multiplexed output, ease in the construction of relatively inexpensive molecular electronic devices which can be addressed and interrogated. A simple method of controlling intramolecular charge transfers is used in the write-to mode and Raman scattering is used in the read-out mode of operation. These features may be useful in the development of high density memory and parallel processing systems with a 1020 gate Hz/cm2 capacity operational at room temperatures.
This paper also discusses the mechanism responsib le for the high gain involved in surface enhanced Raman scattering, suggesting a lasing mechanism, and the electrooptical response of phthalocyanine molecules adsorbed on natural neural membranes.
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