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Synthesis of a New Class of Polyphenylated Phthalocyanines and Metallophthalocyanines
Published online by Cambridge University Press: 10 February 2011
Abstract
We wish to report the synthesis of a new class of peripherally modified, polyphenylated phthalocyanines (Pcs) and metallophthalocyanines (MPcs). These compounds were synthesized by cyclic tetramerization of functionalized pentaphenylbenzophthalonitriles. The phthalonitriles were made in several steps via Diels-Alder cycloaddition between phenylethynylphthalonitrile and substituted tetracyclones. The polyphenylated design leads to enhanced solubility. Thin films can be cast from solutions of the butoxy and dodecaoxy substituted polyphenylated Pcs and MPcs. Cyclodehydrogenation of the Pcs was studied in an attempt to produce planar systems. Preliminary results indicate the pentaphenyl substituent is too bulky to planarize under the conditions employed.
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- Copyright © Materials Research Society 1998
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