Investigation of stepwise covalent synthesis on a surface yielding porphyrin-based multicomponent architectures
2006
Porphyrins have been shown to be a viable medium for use in molecular-based information storage applications. The success of this application requires the construction of a stack of components (“electroactive surface/tether/charge-storage molecule/linker/electrolyte/top contact”) that can withstand high-temperature conditions during fabrication (up to 400 °C) and operation (up to 140 °C). To identify suitable chemistry that enables in situ stepwise synthesis of covalently linked architectures on an electroactive surface, three sets of zinc porphyrins (22 altogether) have been prepared. In the set designed to form the base layer on a surface, each porphyrin incorporates a surface attachment group (triallyl tripod or vinyl monopod) and a distal functional group (e.g., pentafluorophenyl, amine, bromo, carboxy) for elaboration after surface attachment. A second set designed for in situ dyad construction incorporates a single functional group (alcohol, isothiocyanato) that is complementary to the functional gr...
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