Tetraindole Derivatives of Porphyrins as Building Blocks in the Synthesis of Monodisperse Polyphenols |
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Authors: | A Ya Vainer K M Dyumaev A M Kovalenko N V Barannik K I Zelikson S V Kotov |
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Institution: | 1.All-Russian Research Institute of Medicinal and Aromatic Plants,Moscow,Russia |
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Abstract: | A new strategy for the synthesis of monodisperse polyphenols chemically bound to a rigid thermally stable molecular platform has been suggested. The platform has been prepared by the Suzuki–Miyaura reaction of a tetraboryl porphyrin derivative and 3-(4′-bromophenyl)-4,6-dimethoxyindole. Subsequent reactions of complete demethylation of obtained tetraindole and partial blocking of the corresponding phenolic hydroxyls by acid-labile protective groups have led to the formation of a final modified polyphenol compound of the porphyrin series. On the basis of the this polyphenol, a positive photoresist for lithography with exposure radiation at a wavelength of 13.5 nm has been developed; the photoresist affords the fabrication of topological structures with 16-nm resolution. |
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